Questõesde CEDERJ sobre Interpretação de texto | Reading comprehension

                   Fake news could ruin social media, but there’s still hope

by: Guðrun í Jákupsstovu

Camille Francois, director of research and analysis at Graphika, told the audience of her talk at TNW Conference:

“Disinformation campaigns, or fake news is a concept we’ve known about for years, but few people realize how varied the concept can be and how many forms it comes in. When the first instances of fake news started to surface, they were connected with bots. These flooded conversations with alternative stories in order to create noise and, in turn, silence what was actually being said”.

According to Francois, today’s disinformation campaigns are far more varied than just bots – and much harder to detect. For example, targeted harassment campaigns are carried out against journalists and human-rights activists who are critical of governments or big organizations.

“We see this kind of campaigns happening at large scale in countries like the Philippines, Turkey, Ecuador, and Venezuela. The point of these campaigns is to flood the narrative these people try to create with so much noise that their original message gets silenced, their reputation gets damaged, and their credibility undermined. I call this patriotic trolling.”

There are also examples of disinformation campaigns mobilizing people. This was evident during the US elections in 2016 when many fake events suddenly started popping up on Facebook. One Russian Facebook page “organized” an anti-Islam event, while another “organized” a pro-Islam demonstration. The two fake events gathered activists to the same street in Texas, leading to a stand-off.

Francois explains how amazed she is that, in spite of social media being the main medium for these different disinformation campaigns, actual people also still use it to protest properly.

If we look at countries, like Turkey – where there’s a huge amount of censorship and smear campaigns directed at human right defenders and journalists – citizens around the world and in those places still use social media to denounce corruption, to organize human rights movements and this proves that we still haven’t lost the battle of who owns social media.

This is an ongoing battle, and it lets us recognize the actors who are trying to remove the option for people to use social media for good. But everyday you still have people all over the world turning to social media to support their democratic activities. This gives me hope and a desire to protect people’s ability to use social media for good, for denouncing corruption and protecting human rights.

Adapted from:<https://thenextweb.com/socialmedia/2018/05/25/> . Access 09 Oct. 2018.

Glossary

bot: (short for "robot"): um programa automático que roda na Internet; to flood: inundar; trolling: fazer postagem deliberadamente ofensiva para provocar alguém; popping up: surgir, aparecer; stand-off: impasse: smear campaigns: campanhas de difamação.

Text 1

                      The global warming controversy

The global warming controversy is an ongoing dispute about the effects of humans on global climate and about what policies should be implemented to avoid possible undesirable effects of climate change.

The current scientific consensus on climate change is that recent warming indicates a fairly stable long-term trend, that the trend is largely human-caused, and that serious damage may result at some future date if steps are not taken to halt the trend.

Mainstream scientific organizations worldwide (Royal Society, American Geophysical Union, Joint Science Academies, Intergovernmental Panel on Climate Change, American Meteorological Society, and American Association for the Advancement of Science) concur with the assessment that most of the observed warming over the last 50 years is likely to have been due to the human-caused increase in greenhouse gas concentrations.

However, there is also a small but vocal number of scientists in climate and climate-related fields that disagree with the consensus view.

Adapted from:< https://www.sciencedaily.com/terms/global_warming_controversy.htm.> Access 30 Sept. 2017. 

Text 2

             Climate change label leads to climate science acceptance

On the heels of President Donald Trump's decision to pull the United States out of the Paris climate agreement, a new Cornell University study finds that labels matter when it comes to acceptance of climate science.

The U.S. public doubts the existence of "global warming" more than it doubts "climate change".

In a nationally representative survey, 74.4 percent of respondents said they believed that climate change is really happening. But only 65.5 percent said they believed in global warming.

Nonetheless, it's important to remember that 65 percent of respondents did indicate that global warming is occurring, said co-author Peter Enns, associate professor of government. "In other words, although the term matters -- climate change versus global warming -- an overwhelming majority of people still state that global warming is happening," he said.

Adapted from:<http://mediarelations.cornell.edu/2017/06/21/climate-change-label-leads-to-climate-science-acceptance/>. Access. 23 Sept. 2017. 

Glossário

Text 1

                      The global warming controversy

The global warming controversy is an ongoing dispute about the effects of humans on global climate and about what policies should be implemented to avoid possible undesirable effects of climate change.

The current scientific consensus on climate change is that recent warming indicates a fairly stable long-term trend, that the trend is largely human-caused, and that serious damage may result at some future date if steps are not taken to halt the trend.

Mainstream scientific organizations worldwide (Royal Society, American Geophysical Union, Joint Science Academies, Intergovernmental Panel on Climate Change, American Meteorological Society, and American Association for the Advancement of Science) concur with the assessment that most of the observed warming over the last 50 years is likely to have been due to the human-caused increase in greenhouse gas concentrations.

However, there is also a small but vocal number of scientists in climate and climate-related fields that disagree with the consensus view.

Adapted from:< https://www.sciencedaily.com/terms/global_warming_controversy.htm.> Access 30 Sept. 2017. 

Text 2

             Climate change label leads to climate science acceptance

On the heels of President Donald Trump's decision to pull the United States out of the Paris climate agreement, a new Cornell University study finds that labels matter when it comes to acceptance of climate science.

The U.S. public doubts the existence of "global warming" more than it doubts "climate change".

In a nationally representative survey, 74.4 percent of respondents said they believed that climate change is really happening. But only 65.5 percent said they believed in global warming.

Nonetheless, it's important to remember that 65 percent of respondents did indicate that global warming is occurring, said co-author Peter Enns, associate professor of government. "In other words, although the term matters -- climate change versus global warming -- an overwhelming majority of people still state that global warming is happening," he said.

Adapted from:<http://mediarelations.cornell.edu/2017/06/21/climate-change-label-leads-to-climate-science-acceptance/>. Access. 23 Sept. 2017. 

Glossário

Text 1

                      The global warming controversy

The global warming controversy is an ongoing dispute about the effects of humans on global climate and about what policies should be implemented to avoid possible undesirable effects of climate change.

The current scientific consensus on climate change is that recent warming indicates a fairly stable long-term trend, that the trend is largely human-caused, and that serious damage may result at some future date if steps are not taken to halt the trend.

Mainstream scientific organizations worldwide (Royal Society, American Geophysical Union, Joint Science Academies, Intergovernmental Panel on Climate Change, American Meteorological Society, and American Association for the Advancement of Science) concur with the assessment that most of the observed warming over the last 50 years is likely to have been due to the human-caused increase in greenhouse gas concentrations.

However, there is also a small but vocal number of scientists in climate and climate-related fields that disagree with the consensus view.

Adapted from:< https://www.sciencedaily.com/terms/global_warming_controversy.htm.> Access 30 Sept. 2017. 

Text 2

             Climate change label leads to climate science acceptance

On the heels of President Donald Trump's decision to pull the United States out of the Paris climate agreement, a new Cornell University study finds that labels matter when it comes to acceptance of climate science.

The U.S. public doubts the existence of "global warming" more than it doubts "climate change".

In a nationally representative survey, 74.4 percent of respondents said they believed that climate change is really happening. But only 65.5 percent said they believed in global warming.

Nonetheless, it's important to remember that 65 percent of respondents did indicate that global warming is occurring, said co-author Peter Enns, associate professor of government. "In other words, although the term matters -- climate change versus global warming -- an overwhelming majority of people still state that global warming is happening," he said.

Adapted from:<http://mediarelations.cornell.edu/2017/06/21/climate-change-label-leads-to-climate-science-acceptance/>. Access. 23 Sept. 2017. 

Glossário

Text 1

                      The global warming controversy

The global warming controversy is an ongoing dispute about the effects of humans on global climate and about what policies should be implemented to avoid possible undesirable effects of climate change.

The current scientific consensus on climate change is that recent warming indicates a fairly stable long-term trend, that the trend is largely human-caused, and that serious damage may result at some future date if steps are not taken to halt the trend.

Mainstream scientific organizations worldwide (Royal Society, American Geophysical Union, Joint Science Academies, Intergovernmental Panel on Climate Change, American Meteorological Society, and American Association for the Advancement of Science) concur with the assessment that most of the observed warming over the last 50 years is likely to have been due to the human-caused increase in greenhouse gas concentrations.

However, there is also a small but vocal number of scientists in climate and climate-related fields that disagree with the consensus view.

Adapted from:< https://www.sciencedaily.com/terms/global_warming_controversy.htm.> Access 30 Sept. 2017. 

Text 2

             Climate change label leads to climate science acceptance

On the heels of President Donald Trump's decision to pull the United States out of the Paris climate agreement, a new Cornell University study finds that labels matter when it comes to acceptance of climate science.

The U.S. public doubts the existence of "global warming" more than it doubts "climate change".

In a nationally representative survey, 74.4 percent of respondents said they believed that climate change is really happening. But only 65.5 percent said they believed in global warming.

Nonetheless, it's important to remember that 65 percent of respondents did indicate that global warming is occurring, said co-author Peter Enns, associate professor of government. "In other words, although the term matters -- climate change versus global warming -- an overwhelming majority of people still state that global warming is happening," he said.

Adapted from:<http://mediarelations.cornell.edu/2017/06/21/climate-change-label-leads-to-climate-science-acceptance/>. Access. 23 Sept. 2017. 

Glossário

Read the text below and answer the questions which follow it.

TechTank

Political polarization on Facebook

Darrell M. West and Joshua Bleiberg.

Wednesday, May 13, 2015

      Social scientists have built a large body of evidence that people tend to befriend others with similar political beliefs. The research demonstrates that the polarization phenomenon also applies to social networks, like Facebook. The study finds that a Facebook user has approximately five friends with similar political views and only one friend on the other side of the spectrum. In a democracy, to encounter a variety of political opinions is generally seen as a positive value for citizens.

      Facebook is not just a social network. It’s the platform that millions of people use to learn about current events. Taking small steps to help combat political polarization in the long run will add to the trust that users have in Facebook.

Adapted from:<https://www.brookings.edu/blog/techtank/2015/05/13/political-polarization-on-facebook/>. 

Read the text below and answer the questions which follow it.

TechTank

Political polarization on Facebook

Darrell M. West and Joshua Bleiberg.

Wednesday, May 13, 2015

      Social scientists have built a large body of evidence that people tend to befriend others with similar political beliefs. The research demonstrates that the polarization phenomenon also applies to social networks, like Facebook. The study finds that a Facebook user has approximately five friends with similar political views and only one friend on the other side of the spectrum. In a democracy, to encounter a variety of political opinions is generally seen as a positive value for citizens.

      Facebook is not just a social network. It’s the platform that millions of people use to learn about current events. Taking small steps to help combat political polarization in the long run will add to the trust that users have in Facebook.

Adapted from:<https://www.brookings.edu/blog/techtank/2015/05/13/political-polarization-on-facebook/>. 

Read the text below and answer the questions which follow it.

TechTank

Political polarization on Facebook

Darrell M. West and Joshua Bleiberg.

Wednesday, May 13, 2015

      Social scientists have built a large body of evidence that people tend to befriend others with similar political beliefs. The research demonstrates that the polarization phenomenon also applies to social networks, like Facebook. The study finds that a Facebook user has approximately five friends with similar political views and only one friend on the other side of the spectrum. In a democracy, to encounter a variety of political opinions is generally seen as a positive value for citizens.

      Facebook is not just a social network. It’s the platform that millions of people use to learn about current events. Taking small steps to help combat political polarization in the long run will add to the trust that users have in Facebook.

Adapted from:<https://www.brookings.edu/blog/techtank/2015/05/13/political-polarization-on-facebook/>. 

Read the text below and answer the questions which follow it.

TechTank

Political polarization on Facebook

Darrell M. West and Joshua Bleiberg.

Wednesday, May 13, 2015

      Social scientists have built a large body of evidence that people tend to befriend others with similar political beliefs. The research demonstrates that the polarization phenomenon also applies to social networks, like Facebook. The study finds that a Facebook user has approximately five friends with similar political views and only one friend on the other side of the spectrum. In a democracy, to encounter a variety of political opinions is generally seen as a positive value for citizens.

      Facebook is not just a social network. It’s the platform that millions of people use to learn about current events. Taking small steps to help combat political polarization in the long run will add to the trust that users have in Facebook.

Adapted from:<https://www.brookings.edu/blog/techtank/2015/05/13/political-polarization-on-facebook/>. 

                  So You Want to Be a Space Tourist? Here Are Your Options

by Adam Mann / Jul.21.2017 /11:30 AM ET

      Though we’ve been living in the Space Age for more than half a century, going into space remains an extreme rarity. Fewer than 600 people have gone above the Kármán line — the point, about 62 miles above Earth, that marks the beginning of space — and all were put there by the U.S. or another nation's government.

      But the rise of private spaceflight companies like Virgin Galactic and Space X means that the final frontier may soon be within reach of a great many more of us. The firms have announced plans to put private astronauts, a.k.a. space tourists, on orbital or suborbital flights within the next few years.

      Initially, the cost of a ride on one of these rockets will be hundreds of thousands of dollars at a minimum. That puts the experience within reach of only the wealthiest people. But advances in rocket and capsule design are expected to lower the price to the point that people of more modest fortunes are able to afford a ticket.

      Some projections put the global space tourism market at approximately $34 billion by 2021.

                           What Space Tourists Can Expect

      What exactly is in store for space tourists? The excitement of a rocket ride and a chance to experience weightlessness, for starters. And the bragging rights are hard to beat. But some say the biggest benefit of going into space is getting a dramatic new outlook on life on the fragile blue marble we call home. It’s a perspective shift that could have profound implications not just for individuals but also for society at large.

      “I personally believe the planetary perspective is going to be crucial to solving humanity’s biggest challenges over the next century,” says Virgin Galactic CEO George Whitesides. “I’m inspired that we’ll take people up so they can experience that view, which is said to change your world view in a fundamental way.”

Adapted from: https://www.nbcnews.com/mach/science/so-you-want-be-space-tourist-here-are-your-options-ncna784166

Glossary

weightlessness: ausência de peso; bragging rights: direito de gabar-se; to afford: poder comprar.

                  So You Want to Be a Space Tourist? Here Are Your Options

by Adam Mann / Jul.21.2017 /11:30 AM ET

      Though we’ve been living in the Space Age for more than half a century, going into space remains an extreme rarity. Fewer than 600 people have gone above the Kármán line — the point, about 62 miles above Earth, that marks the beginning of space — and all were put there by the U.S. or another nation's government.

      But the rise of private spaceflight companies like Virgin Galactic and Space X means that the final frontier may soon be within reach of a great many more of us. The firms have announced plans to put private astronauts, a.k.a. space tourists, on orbital or suborbital flights within the next few years.

      Initially, the cost of a ride on one of these rockets will be hundreds of thousands of dollars at a minimum. That puts the experience within reach of only the wealthiest people. But advances in rocket and capsule design are expected to lower the price to the point that people of more modest fortunes are able to afford a ticket.

      Some projections put the global space tourism market at approximately $34 billion by 2021.

                           What Space Tourists Can Expect

      What exactly is in store for space tourists? The excitement of a rocket ride and a chance to experience weightlessness, for starters. And the bragging rights are hard to beat. But some say the biggest benefit of going into space is getting a dramatic new outlook on life on the fragile blue marble we call home. It’s a perspective shift that could have profound implications not just for individuals but also for society at large.

      “I personally believe the planetary perspective is going to be crucial to solving humanity’s biggest challenges over the next century,” says Virgin Galactic CEO George Whitesides. “I’m inspired that we’ll take people up so they can experience that view, which is said to change your world view in a fundamental way.”

Adapted from: https://www.nbcnews.com/mach/science/so-you-want-be-space-tourist-here-are-your-options-ncna784166

Glossary

weightlessness: ausência de peso; bragging rights: direito de gabar-se; to afford: poder comprar.

                  So You Want to Be a Space Tourist? Here Are Your Options

by Adam Mann / Jul.21.2017 /11:30 AM ET

      Though we’ve been living in the Space Age for more than half a century, going into space remains an extreme rarity. Fewer than 600 people have gone above the Kármán line — the point, about 62 miles above Earth, that marks the beginning of space — and all were put there by the U.S. or another nation's government.

      But the rise of private spaceflight companies like Virgin Galactic and Space X means that the final frontier may soon be within reach of a great many more of us. The firms have announced plans to put private astronauts, a.k.a. space tourists, on orbital or suborbital flights within the next few years.

      Initially, the cost of a ride on one of these rockets will be hundreds of thousands of dollars at a minimum. That puts the experience within reach of only the wealthiest people. But advances in rocket and capsule design are expected to lower the price to the point that people of more modest fortunes are able to afford a ticket.

      Some projections put the global space tourism market at approximately $34 billion by 2021.

                           What Space Tourists Can Expect

      What exactly is in store for space tourists? The excitement of a rocket ride and a chance to experience weightlessness, for starters. And the bragging rights are hard to beat. But some say the biggest benefit of going into space is getting a dramatic new outlook on life on the fragile blue marble we call home. It’s a perspective shift that could have profound implications not just for individuals but also for society at large.

      “I personally believe the planetary perspective is going to be crucial to solving humanity’s biggest challenges over the next century,” says Virgin Galactic CEO George Whitesides. “I’m inspired that we’ll take people up so they can experience that view, which is said to change your world view in a fundamental way.”

Adapted from: https://www.nbcnews.com/mach/science/so-you-want-be-space-tourist-here-are-your-options-ncna784166

Glossary

weightlessness: ausência de peso; bragging rights: direito de gabar-se; to afford: poder comprar.

A new planet in our neighborhood - how likely is life there?

By Don Lincoln, August 24, 2016

Scientists working at the European Southern Observatory (ESO), using the La Silla telescope, claim to have discovered the closest exoplanet to Earth. Exoplanet means planets orbiting stars other than the Sun. Most of them are huge planets orbiting very near their star. The newly discovered planet, which orbits Proxima Centauri, a star within the so-called “habitable zone”, has been named Proxima b.

Proxima Centauri is a red dwarf, which is the most common type of star in the galaxy. Red dwarfs are much smaller than our Sun, and are very dim. For instance, in the visible spectrum that we use to see, Proxima Centauri gives off 0.0056% as much light as the Sun.

So what about life? Are there any chances that an alien lizard might bask in Proxima Centauri’s light or try to find shade under an alien tree? Dr. Guillem Anglada-Escudé, co-author of the research from London University, believes that “there is a reasonable expectation that this planet might be able to host life”

But this belief is not consensual as other scientists think the prospect of life is improbable. Although the temperature of the planet is thought to be such that liquid water could exist, it is unlikely that Proxima b is habitable, as the planet is subject to stellar wind pressures of more than 2000 times those experienced by Earth from the solar wind. These winds would likely blow any atmosphere away, leaving the undersurface as the only vaguely habitable location on that planet. You shouldn’t imagine, thus, a lush and verdant world, with lovely blue waters, sandy beaches and green plants.

So, what’s the bottom line? First, the discovery is extremely exciting. The existence of a nearby planet in the habitable zone will perhaps increase the interest in efforts like Project Starshot, which aims to send microprobes (instruments that apply a stable and wellfocused beam of charged particles -electrons or ions- to a sample) to Proxima Centauri. On the other hand, Proxima b is unlikely to be a haven for people trying to escape the ecological issues of Earth, so we should not view this discovery as a way to ignore our own ecosystem.

Adapted from: < http://edition.cnn.com/2016/08/24/opinions/nearbyplanet-opinion-lincoln/> Access Oct. 2016.

Glossário:

claim: afirmar; dwarf: anão; dim: opaco; give off: emitir; lizard: lagarto; bask: aquecer-se; belief: crença; wind: vento; undersurface: camada inferior; lush: viçoso; bottom line: aspecto fundamental; aim: visar/ter por objetivo; sample: amostra; haven: refúgio.

A new planet in our neighborhood - how likely is life there?

By Don Lincoln, August 24, 2016

Scientists working at the European Southern Observatory (ESO), using the La Silla telescope, claim to have discovered the closest exoplanet to Earth. Exoplanet means planets orbiting stars other than the Sun. Most of them are huge planets orbiting very near their star. The newly discovered planet, which orbits Proxima Centauri, a star within the so-called “habitable zone”, has been named Proxima b.

Proxima Centauri is a red dwarf, which is the most common type of star in the galaxy. Red dwarfs are much smaller than our Sun, and are very dim. For instance, in the visible spectrum that we use to see, Proxima Centauri gives off 0.0056% as much light as the Sun.

So what about life? Are there any chances that an alien lizard might bask in Proxima Centauri’s light or try to find shade under an alien tree? Dr. Guillem Anglada-Escudé, co-author of the research from London University, believes that “there is a reasonable expectation that this planet might be able to host life”

But this belief is not consensual as other scientists think the prospect of life is improbable. Although the temperature of the planet is thought to be such that liquid water could exist, it is unlikely that Proxima b is habitable, as the planet is subject to stellar wind pressures of more than 2000 times those experienced by Earth from the solar wind. These winds would likely blow any atmosphere away, leaving the undersurface as the only vaguely habitable location on that planet. You shouldn’t imagine, thus, a lush and verdant world, with lovely blue waters, sandy beaches and green plants.

So, what’s the bottom line? First, the discovery is extremely exciting. The existence of a nearby planet in the habitable zone will perhaps increase the interest in efforts like Project Starshot, which aims to send microprobes (instruments that apply a stable and wellfocused beam of charged particles -electrons or ions- to a sample) to Proxima Centauri. On the other hand, Proxima b is unlikely to be a haven for people trying to escape the ecological issues of Earth, so we should not view this discovery as a way to ignore our own ecosystem.

Adapted from: < http://edition.cnn.com/2016/08/24/opinions/nearbyplanet-opinion-lincoln/> Access Oct. 2016.

Glossário:

claim: afirmar; dwarf: anão; dim: opaco; give off: emitir; lizard: lagarto; bask: aquecer-se; belief: crença; wind: vento; undersurface: camada inferior; lush: viçoso; bottom line: aspecto fundamental; aim: visar/ter por objetivo; sample: amostra; haven: refúgio.

A new planet in our neighborhood - how likely is life there?

By Don Lincoln, August 24, 2016

Scientists working at the European Southern Observatory (ESO), using the La Silla telescope, claim to have discovered the closest exoplanet to Earth. Exoplanet means planets orbiting stars other than the Sun. Most of them are huge planets orbiting very near their star. The newly discovered planet, which orbits Proxima Centauri, a star within the so-called “habitable zone”, has been named Proxima b.

Proxima Centauri is a red dwarf, which is the most common type of star in the galaxy. Red dwarfs are much smaller than our Sun, and are very dim. For instance, in the visible spectrum that we use to see, Proxima Centauri gives off 0.0056% as much light as the Sun.

So what about life? Are there any chances that an alien lizard might bask in Proxima Centauri’s light or try to find shade under an alien tree? Dr. Guillem Anglada-Escudé, co-author of the research from London University, believes that “there is a reasonable expectation that this planet might be able to host life”

But this belief is not consensual as other scientists think the prospect of life is improbable. Although the temperature of the planet is thought to be such that liquid water could exist, it is unlikely that Proxima b is habitable, as the planet is subject to stellar wind pressures of more than 2000 times those experienced by Earth from the solar wind. These winds would likely blow any atmosphere away, leaving the undersurface as the only vaguely habitable location on that planet. You shouldn’t imagine, thus, a lush and verdant world, with lovely blue waters, sandy beaches and green plants.

So, what’s the bottom line? First, the discovery is extremely exciting. The existence of a nearby planet in the habitable zone will perhaps increase the interest in efforts like Project Starshot, which aims to send microprobes (instruments that apply a stable and wellfocused beam of charged particles -electrons or ions- to a sample) to Proxima Centauri. On the other hand, Proxima b is unlikely to be a haven for people trying to escape the ecological issues of Earth, so we should not view this discovery as a way to ignore our own ecosystem.

Adapted from: < http://edition.cnn.com/2016/08/24/opinions/nearbyplanet-opinion-lincoln/> Access Oct. 2016.

Glossário:

claim: afirmar; dwarf: anão; dim: opaco; give off: emitir; lizard: lagarto; bask: aquecer-se; belief: crença; wind: vento; undersurface: camada inferior; lush: viçoso; bottom line: aspecto fundamental; aim: visar/ter por objetivo; sample: amostra; haven: refúgio.

A new planet in our neighborhood - how likely is life there?

By Don Lincoln, August 24, 2016

Scientists working at the European Southern Observatory (ESO), using the La Silla telescope, claim to have discovered the closest exoplanet to Earth. Exoplanet means planets orbiting stars other than the Sun. Most of them are huge planets orbiting very near their star. The newly discovered planet, which orbits Proxima Centauri, a star within the so-called “habitable zone”, has been named Proxima b.

Proxima Centauri is a red dwarf, which is the most common type of star in the galaxy. Red dwarfs are much smaller than our Sun, and are very dim. For instance, in the visible spectrum that we use to see, Proxima Centauri gives off 0.0056% as much light as the Sun.

So what about life? Are there any chances that an alien lizard might bask in Proxima Centauri’s light or try to find shade under an alien tree? Dr. Guillem Anglada-Escudé, co-author of the research from London University, believes that “there is a reasonable expectation that this planet might be able to host life”

But this belief is not consensual as other scientists think the prospect of life is improbable. Although the temperature of the planet is thought to be such that liquid water could exist, it is unlikely that Proxima b is habitable, as the planet is subject to stellar wind pressures of more than 2000 times those experienced by Earth from the solar wind. These winds would likely blow any atmosphere away, leaving the undersurface as the only vaguely habitable location on that planet. You shouldn’t imagine, thus, a lush and verdant world, with lovely blue waters, sandy beaches and green plants.

So, what’s the bottom line? First, the discovery is extremely exciting. The existence of a nearby planet in the habitable zone will perhaps increase the interest in efforts like Project Starshot, which aims to send microprobes (instruments that apply a stable and wellfocused beam of charged particles -electrons or ions- to a sample) to Proxima Centauri. On the other hand, Proxima b is unlikely to be a haven for people trying to escape the ecological issues of Earth, so we should not view this discovery as a way to ignore our own ecosystem.

Adapted from: < http://edition.cnn.com/2016/08/24/opinions/nearbyplanet-opinion-lincoln/> Access Oct. 2016.

Glossário:

claim: afirmar; dwarf: anão; dim: opaco; give off: emitir; lizard: lagarto; bask: aquecer-se; belief: crença; wind: vento; undersurface: camada inferior; lush: viçoso; bottom line: aspecto fundamental; aim: visar/ter por objetivo; sample: amostra; haven: refúgio.