Life on exoplanet K2-18b? In 2023, scientists announced they had tentatively identified the gas dimethyl sulfide - a possible biosignature of life - in the atmosphere of K2-18b, an exoplanet
Previous data of K2-18b, obtained with Webb's Near-Infrared Imager and Slitless Spectrograph and Near-Infrared Spectrograph, shows an abundance of methane and carbon dioxide in the exoplanet's
The exoplanet K2-18b, 124 light-years away, is 2.6 times the radius and 8.6 times the mass of Earth, and orbits its star within the habitable zone, where temperatures could allow liquid water to exist. The planet was the subject of significant media coverage in the autumn of 2019, as two different teams reported detection of water vapour in its
K2-18b, which orbits a red dwarf star more than 120 light-years from Earth, has for years intrigued astronomers who believe it exists in what they refer to as the "habitable zone" - where
K2-18b, therefore, cannot be an ocean-covered, Earth-analogue world. With all this skepticism that K2-18b has a liquid-water ocean, I think Zimmer's article at the New York Times summarized the situation nicely: "Other researchers emphasized that much research remained to be done. One question yet to be resolved is whether K2-18b is in fact
Previous data of K2-18b, obtained with Webb's Near-Infrared Imager and Slitless Spectrograph and Near-Infrared Spectrograph, shows an abundance of methane and carbon dioxide in the exoplanet's The exoplanet K2-18b, 124 light-years away, is 2.6 times the radius and 8.6 times the mass of Earth, and orbits its star within the habitable zone, where temperatures could allow liquid water to exist. The planet was the subject of significant media coverage in the autumn of 2019, as two different teams reported detection of water vapour in its K2-18b, which orbits a red dwarf star more than 120 light-years from Earth, has for years intrigued astronomers who believe it exists in what they refer to as the "habitable zone" - where K2-18b, therefore, cannot be an ocean-covered, Earth-analogue world. With all this skepticism that K2-18b has a liquid-water ocean, I think Zimmer's article at the New York Times summarized the situation nicely: "Other researchers emphasized that much research remained to be done. One question yet to be resolved is whether K2-18b is in fact
Earlier observations found methane and carbon dioxide in K2-18b's atmosphere — the first instance of carbon-based molecules discovered in the atmosphere of an exoplanet in the habitable zone. K2-18b is about 2.6 times as large as Earth, and lies 124 light years away, in the constellation Leo.
Webb Telescope's study on K2-18b reveals potential but inconclusive signs of extraterrestrial life; advanced technology needed for certainty.
A paper published in 2023 spurred discussion about whether life exists on an exoplanet named K2-18b. Two years later, the puzzle continues — and some scientists are expressing doubt.
Unique Conditions on K2-18b. However, K2-18b is a bit different. "This planet gets almost the same amount of solar radiation as Earth. And if atmosphere is removed as a factor, K2-18b has a temperature close to Earth's, which is also an ideal situation in which to find life," said UCR project scientist and paper author Shang-Min Tsai.
Did the Webb Telescope Find Alien Life on Exoplanet K2-18b? Here's What
Earlier observations found methane and carbon dioxide in K2-18b's atmosphere — the first instance of carbon-based molecules discovered in the atmosphere of an exoplanet in the habitable zone. K2-18b is about 2.6 times as large as Earth, and lies 124 light years away, in the constellation Leo. Webb Telescope's study on K2-18b reveals potential but inconclusive signs of extraterrestrial life; advanced technology needed for certainty. A paper published in 2023 spurred discussion about whether life exists on an exoplanet named K2-18b. Two years later, the puzzle continues — and some scientists are expressing doubt.
Unique Conditions on K2-18b. However, K2-18b is a bit different. "This planet gets almost the same amount of solar radiation as Earth. And if atmosphere is removed as a factor, K2-18b has a temperature close to Earth's, which is also an ideal situation in which to find life," said UCR project scientist and paper author Shang-Min Tsai.
This artist's concept shows what exoplanet K2-18 b could look like based on science data. K2-18 b, an exoplanet 8.6 times as massive as Earth, orbits the cool dwarf star K2-18 in the habitable zone and lies 120 light-years from Earth. A new investigation with NASA's James Webb Space Telescope into K2-18 b has revealed the presence of carbon-bearing molecules including methane and carbon
The habitable-zone temperature of K2-18b provides further impetus for detailed characterization of its interior and atmosphere. Given its mass (; Cloutier et al. 2019) and radius (; Benneke et al. 2019), K2-18b has a bulk density (g cm −3; Benneke et al. 2019). This density, between that of Earth and Neptune, may be thought to preclude a
JWST May Have Found Strongest Evidence of Life on Exoplanet K2-18b While cautious about the findings, astronomers detected traces of a chemical that, on Earth, is produced by phytoplankton.
K2-18b, also known as EPIC 201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth. The planet is a sub-Neptune about 2.6 times the radius of Earth, with a 33-day orbit within the star's habitable zone; it receives approximately a similar amount of light as the Earth receives from the Sun.
K2-18b - Wikipedia
This artist's concept shows what exoplanet K2-18 b could look like based on science data. K2-18 b, an exoplanet 8.6 times as massive as Earth, orbits the cool dwarf star K2-18 in the habitable zone and lies 120 light-years from Earth. A new investigation with NASA's James Webb Space Telescope into K2-18 b has revealed the presence of carbon-bearing molecules including methane and carbon The habitable-zone temperature of K2-18b provides further impetus for detailed characterization of its interior and atmosphere. Given its mass (; Cloutier et al. 2019) and radius (; Benneke et al.
2019), K2-18b has a bulk density (g cm −3; Benneke et al. 2019). This density, between that of Earth and Neptune, may be thought to preclude a JWST May Have Found Strongest Evidence of Life on Exoplanet K2-18b While cautious about the findings, astronomers detected traces of a chemical that, on Earth, is produced by phytoplankton. K2-18b, also known as EPIC 201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth. The planet is a sub-Neptune about 2.6 times the radius of Earth, with a 33-day orbit within the star's habitable zone; it receives approximately a similar amount of light as the Earth receives from the Sun.
K2-18b, which is 2.6 times the size of our planet and 8.6 times the mass, is suspected to be a "hycean world," meaning that it potentially has a planet-wide ocean and an atmosphere rich in hydrogen.
A Cambridge team studying the atmosphere of a planet called K2-18b has detected signs of molecules which on Earth are only produced by simple organisms.
K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know.
For reference, K2-18b is 8.6 times as massive and 2.6 times as large as Earth. Seager believes this finding, which suggests a candidate for a biosignature, "will remain in the candidate category
K2-18b: Scientists using Webb telescope detect signature of life - CNN
K2-18b, which is 2.6 times the size of our planet and 8.6 times the mass, is suspected to be a "hycean world," meaning that it potentially has a planet-wide ocean and an atmosphere rich in hydrogen. A Cambridge team studying the atmosphere of a planet called K2-18b has detected signs of molecules which on Earth are only produced by simple organisms. K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know. For reference, K2-18b is 8.6 times as massive and 2.6 times as large as Earth.
Seager believes this finding, which suggests a candidate for a biosignature, "will remain in the candidate category
Editor's note: This article on K2-18b was first published in September 2023 on The Conversation. The Times of London reported NASA's James Webb Space Telescope was to further investigate the
K2-18b, extrasolar planet with an atmosphere containing dimethyl sulfide (DMS) and dimethyl disulfide (DMDS), which could indicate the possible presence of life K2-18b was discovered in 2015 by the Kepler satellite during its K2 mission phase, when the satellite operated with only two of its four gyroscopes. The planet circles the red dwarf star K2-18, which has a spectral type M2.5 V and is
And K2-18b's air is also rich in DMS and/or DMDS, according to the new study. The researchers estimate concentrations of more than 10 parts per million by volume, compared to less than one part
K2-18b resides within the habitable zone of its star, making the presence of liquid water and thus life possible. Using the James Webb Space Telescope, researchers detected molecules in K2-18b's
Is there alien life on a distant planet? What to know about K2-18b
Editor's note: This article on K2-18b was first published in September 2023 on The Conversation. The Times of London reported NASA's James Webb Space Telescope was to further investigate the K2-18b, extrasolar planet with an atmosphere containing dimethyl sulfide (DMS) and dimethyl disulfide (DMDS), which could indicate the possible presence of life K2-18b was discovered in 2015 by the Kepler satellite during its K2 mission phase, when the satellite operated with only two of its four gyroscopes. The planet circles the red dwarf star K2-18, which has a spectral type M2.5 V and is And K2-18b's air is also rich in DMS and/or DMDS, according to the new study. The researchers estimate concentrations of more than 10 parts per million by volume, compared to less than one part K2-18b resides within the habitable zone of its star, making the presence of liquid water and thus life possible. Using the James Webb Space Telescope, researchers detected molecules in K2-18b's
Data from the James Webb Space Telescope (JWST) has shown that exoplanet K2-18b has some of the chemical markers that may indicate life.
An artist's impression of K2-18b as an ocean world. NASA / ESA, CSA / Joseph Olmsted (STScI) The small, cool star K2-18 is home to two planets, one of which has garnered plenty of attention in the decade since its discovery. Recently, JWST data of K2-18b, an 8.6-Earth-mass planet, revealed the presence of atmospheric carbon dioxide and methane.
"Goldilocks" zone. More than eight times the mass of Earth and 2.5 times as big, K2-18b is rare among the roughly 6,000 exoplanets discovered so far in that it orbits its star in a habitable or
K2-18 b spectra James Webb Space Telescope's (JWST) NIRISS and NIRSpec instruments detected methane and carbon dioxide in the atmosphere of exoplanet K2-18 b, along with potential traces of dimethyl sulfide (DMS), a substance that is created on Earth by living creatures. These findings, including low ammonia, suggest an ocean under a hydrogen-rich atmosphere on K2-18 b, an exoplanet 8.6 times
Revisiting K2-18 b: JWST finds a new lead in… | The Planetary Society
Data from the James Webb Space Telescope (JWST) has shown that exoplanet K2-18b has some of the chemical markers that may indicate life. An artist's impression of K2-18b as an ocean world. NASA / ESA, CSA / Joseph Olmsted (STScI) The small, cool star K2-18 is home to two planets, one of which has garnered plenty of attention in the decade since its discovery. Recently, JWST data of K2-18b, an 8.6-Earth-mass planet, revealed the presence of atmospheric carbon dioxide and methane. "Goldilocks" zone.
More than eight times the mass of Earth and 2.5 times as big, K2-18b is rare among the roughly 6,000 exoplanets discovered so far in that it orbits its star in a habitable or K2-18 b spectra James Webb Space Telescope's (JWST) NIRISS and NIRSpec instruments detected methane and carbon dioxide in the atmosphere of exoplanet K2-18 b, along with potential traces of dimethyl sulfide (DMS), a substance that is created on Earth by living creatures. These findings, including low ammonia, suggest an ocean under a hydrogen-rich atmosphere on K2-18 b, an exoplanet 8.6 times
