Tag #Biosignatures

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kathimerini.gr

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Apr 27, 22:12

Potential Biosignatures Detected on Exoplanet K2-18 b

Scientists detected dimethyl sulfide and/or dimethyl disulfide in the atmosphere of exoplanet K2-18 b, 124 light-years from Earth, using the James Webb Space Telescope; these molecules are produced by simple organisms on Earth, prompting further investigation into the potential for extraterrestrial ...

Potential Biosignatures Detected on Exoplanet K2-18 b

Scientists detected dimethyl sulfide and/or dimethyl disulfide in the atmosphere of exoplanet K2-18 b, 124 light-years from Earth, using the James Webb Space Telescope; these molecules are produced by simple organisms on Earth, prompting further investigation into the potential for extraterrestrial ...

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What further research is needed to confirm the biological origin of the detected molecules and determine the habitability of K2-18 b?

Future observations will be critical to verify these findings. Confirmation of biosignatures on K2-18 b could revolutionize our understanding of life beyond Earth, but further research is needed to confirm the origin of the detected molecules and characterize K2-18 b's nature as an ocean planet. The ability of JWST to detect such subtle atmospheric signals opens exciting possibilities for future exoplanet research.

dailymail.co.uk

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Apr 17, 19:19

Strongest Evidence Yet of Life Outside Our Solar System Found on Exoplanet K2-18b

Scientists using data from the James Webb Space Telescope have detected dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) in the atmosphere of exoplanet K2-18b, 124 light-years from Earth, providing strong evidence for the potential existence of extraterrestrial life.

Strongest Evidence Yet of Life Outside Our Solar System Found on Exoplanet K2-18b

Scientists using data from the James Webb Space Telescope have detected dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) in the atmosphere of exoplanet K2-18b, 124 light-years from Earth, providing strong evidence for the potential existence of extraterrestrial life.

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Life Below Water

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How do the concentrations of DMS and DMDS on K2-18b compare to those on Earth, and what are the implications of this difference?

K2-18b, a Hycean world orbiting a red dwarf star in the habitable zone, exhibits atmospheric concentrations of DMS and DMDS thousands of times higher than on Earth. This aligns with earlier predictions and strengthens the hypothesis of a life-sustaining ocean on the planet. Further observations are needed to confirm this exciting discovery.

welt.de

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Apr 17, 16:15

Possible Signs of Life Found on Exoplanet K2-18b

An international team, using the James Webb Space Telescope, detected dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) in the atmosphere of exoplanet K2-18b, 124 light-years away, suggesting potential life but requiring further confirmation.

Possible Signs of Life Found on Exoplanet K2-18b

An international team, using the James Webb Space Telescope, detected dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) in the atmosphere of exoplanet K2-18b, 124 light-years away, suggesting potential life but requiring further confirmation.

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How does the concentration of DMS and DMDS on K2-18b compare to Earth, and what are the implications of this difference?

The discovery builds upon previous findings of water and other gases in K2-18b's atmosphere. The detection of DMS and DMDS, confirmed using two different infrared ranges, strengthens the hypothesis of life. However, the concentration of these compounds is significantly higher than on Earth, raising further questions.

zeit.de

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Apr 17, 16:15

Possible Signs of Life Found on Exoplanet K2-18b

An international team using the James Webb Space Telescope detected dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b, 124 light-years away, suggesting potential evidence of life; however, further confirmation is needed.

Possible Signs of Life Found on Exoplanet K2-18b

An international team using the James Webb Space Telescope detected dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b, 124 light-years away, suggesting potential evidence of life; however, further confirmation is needed.

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How does the concentration of these compounds on K2-18b compare to Earth, and what are the potential implications of this difference for the type and scale of life that might exist there?

The discovery builds upon previous findings of water, methane, and carbon dioxide in K2-18b's atmosphere. The detection of DMS was initially observed in near-infrared wavelengths and is now confirmed in mid-infrared, strengthening the evidence. The concentration of these compounds on K2-18b would be thousands of times greater than on Earth, raising questions about the nature and scale of potential life forms.

welt.de

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Apr 17, 22:11

Possible Extraterrestrial Life Detected on Exoplanet K2-18b

Astronomers using the James Webb Space Telescope detected Dimethyl Sulfide (DMS) in the atmosphere of K2-18b, a sub-Neptune exoplanet 124 light-years away, suggesting possible extraterrestrial life; however, further research is needed to confirm this finding.

Possible Extraterrestrial Life Detected on Exoplanet K2-18b

Astronomers using the James Webb Space Telescope detected Dimethyl Sulfide (DMS) in the atmosphere of K2-18b, a sub-Neptune exoplanet 124 light-years away, suggesting possible extraterrestrial life; however, further research is needed to confirm this finding.

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What is the significance of detecting Dimethyl Sulfide (DMS) in the atmosphere of exoplanet K2-18b?

Astronomers detected Dimethyl Sulfide (DMS) in the atmosphere of exoplanet K2-18b, 124 light-years away. DMS on Earth is primarily produced by microorganisms, suggesting potential extraterrestrial life. Further research is needed to confirm this.

elpais.com

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Apr 17, 16:15

Potential Biosignatures Detected on Exoplanet K2-18b

Astronomers detected dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b using the James Webb Space Telescope, suggesting potential microbial life; however, other experts require stronger evidence before confirming this claim.

Potential Biosignatures Detected on Exoplanet K2-18b

Astronomers detected dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b using the James Webb Space Telescope, suggesting potential microbial life; however, other experts require stronger evidence before confirming this claim.

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What are the main criticisms of the study's methodology and conclusions, and how could these criticisms be addressed in future research?

The detection of DMS and DMDS on K2-18b, a Neptune-like exoplanet 120 light-years away, is based on observations from the James Webb Space Telescope. While these gases are associated with microbial life on Earth, alternative abiotic explanations are possible. The 3-sigma confidence level of the finding is considered insufficient by some experts, who advocate for a 5-sigma level for definitive confirmation.

theguardian.com

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Apr 22, 16:17

Tentative Detection of Potential Biosignature Gases on Exoplanet K2-18b

A team of researchers tentatively detected dimethyl sulphide (DMS) or dimethyl disulphide (DMDS) in the atmosphere of K2-18b, an exoplanet orbiting a red dwarf star 124 light-years away, using the James Webb Space Telescope; while these gases are associated with life on Earth, non-biological sources...

Tentative Detection of Potential Biosignature Gases on Exoplanet K2-18b

A team of researchers tentatively detected dimethyl sulphide (DMS) or dimethyl disulphide (DMDS) in the atmosphere of K2-18b, an exoplanet orbiting a red dwarf star 124 light-years away, using the James Webb Space Telescope; while these gases are associated with life on Earth, non-biological sources...

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What are the potential abiotic sources of dimethyl sulphide (DMS) and dimethyl disulphide (DMDS), and how could future research address this ambiguity?

The study's significance lies in its methodology for detecting potential biosignatures on exoplanets using the James Webb Space Telescope. While the DMS/DMDS detection is not definitive, the research highlights the need for further investigation into both biological and non-biological pathways for these gases. This pushes the boundaries of exoplanet research.

parsi.euronews.com

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Apr 17, 04:12

James Webb Telescope Detects Potential Biosignatures on Exoplanet K2-18b

The James Webb Space Telescope detected dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b, a potentially habitable planet 124 light-years from Earth, suggesting the possibility of microbial life; however, further research is needed to confirm this hypothesis.

James Webb Telescope Detects Potential Biosignatures on Exoplanet K2-18b

The James Webb Space Telescope detected dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b, a potentially habitable planet 124 light-years from Earth, suggesting the possibility of microbial life; however, further research is needed to confirm this hypothesis.

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What are the long-term implications of this discovery for the search for extraterrestrial life and the development of future astrobiological research?

While this discovery is a major step forward in the search for extraterrestrial life, it is crucial to note that this is not confirmation of life. Further research is needed to rule out alternative explanations and to characterize the nature and extent of any potential life forms. The discovery underscores the potential of the James Webb Space Telescope to detect biosignatures on potentially habitable exoplanets, ushering in a new era of observational astrobiology.

theguardian.com

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Apr 17, 04:12

Strongest Evidence Yet Found for Extraterrestrial Life on Exoplanet K2-18 b

The James Webb Space Telescope has detected dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) in the atmosphere of exoplanet K2-18 b, 124 light-years from Earth, offering the strongest evidence yet for extraterrestrial life, though further research is needed to confirm a biological origin.

Strongest Evidence Yet Found for Extraterrestrial Life on Exoplanet K2-18 b

The James Webb Space Telescope has detected dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) in the atmosphere of exoplanet K2-18 b, 124 light-years from Earth, offering the strongest evidence yet for extraterrestrial life, though further research is needed to confirm a biological origin.

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What alternative explanations exist for the presence of DMS and DMDS on K2-18 b, and how could these be investigated?

The detection of DMS and DMDS on K2-18 b strengthens the hypothesis of a vast ocean on the planet, although alternative explanations such as volcanic activity or cometary impacts remain. The high concentrations of these chemicals, thousands of times greater than on Earth, challenge non-biological explanations. Further investigation is needed to confirm the biological origin of these compounds.

gr.euronews.com

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Apr 17, 22:11

Potential Biosignatures Detected on Exoplanet K2-18b

Astronomers detected potential biosignatures—dimethyl sulfide and dimethyl disulfide—in the atmosphere of exoplanet K2-18b, 124 light-years away, using data from the Webb telescope, though further research is needed for confirmation.

Potential Biosignatures Detected on Exoplanet K2-18b

Astronomers detected potential biosignatures—dimethyl sulfide and dimethyl disulfide—in the atmosphere of exoplanet K2-18b, 124 light-years away, using data from the Webb telescope, though further research is needed for confirmation.

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What are the limitations and challenges in confirming the discovery, and what further research is necessary?

The discovery on K2-18b, an exoplanet eight times the mass of Earth, located in its star's habitable zone, involves compounds (dimethyl sulfide and dimethyl disulfide) that strongly suggest biological activity. While independent scientists acknowledge the interest, more investigation is needed to rule out alternative explanations for these compounds. This builds on the over 5,500 exoplanets already confirmed, utilizing data from the powerful Webb telescope launched in 2021.

nrc.nl

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Apr 17, 22:11

Controversial Claim: Evidence of Extraterrestrial Life on K2-18b

Scientists at the University of Cambridge announced finding dimethylsulfide and dimethyldisulfide in the atmosphere of exoplanet K2-18b, considered strong evidence of extraterrestrial life, although the 3-sigma significance level and a self-developed model have raised skepticism within the scientifi...

Controversial Claim: Evidence of Extraterrestrial Life on K2-18b

Scientists at the University of Cambridge announced finding dimethylsulfide and dimethyldisulfide in the atmosphere of exoplanet K2-18b, considered strong evidence of extraterrestrial life, although the 3-sigma significance level and a self-developed model have raised skepticism within the scientifi...

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What specific evidence supports the claim of extraterrestrial life on K2-18b, and what is the statistical significance of this evidence compared to the standard for such a discovery?

Researchers at the University of Cambridge claim to have found the strongest evidence yet for extraterrestrial life on exoplanet K2-18b, detecting dimethylsulfide (DMS) and dimethyldisulfide (DMDS) in its atmosphere – substances primarily produced by microorganisms on Earth. However, this evidence is based on a 3-sigma significance level, meaning there's a 0.3% chance the signal is random; the standard for such a claim is 5-sigma.

forbes.com

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Dec 23, 13:11

Biosphere Could Extend Planetary Habitability by Billions of Years

A new study suggests that planets near the inner edge of their star's habitable zone could remain habitable for up to two billion years longer than previously thought due to life's ability to regulate atmospheric CO2 and prevent a runaway greenhouse effect, expanding the search for extraterrestrial ...

Biosphere Could Extend Planetary Habitability by Billions of Years

A new study suggests that planets near the inner edge of their star's habitable zone could remain habitable for up to two billion years longer than previously thought due to life's ability to regulate atmospheric CO2 and prevent a runaway greenhouse effect, expanding the search for extraterrestrial ...

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What specific biological processes are hypothesized to regulate atmospheric CO2 levels and delay the runaway greenhouse effect on these planets?

The research links low atmospheric CO2 levels on these planets to the presence of a biosphere. Biological processes, like enhanced weathering, regulate CO2 levels, delaying the runaway greenhouse effect. This contrasts with planets lacking a biosphere, which experience a rapid runaway greenhouse.

Showing 1 to 12 of 12 results