Possible Sign Of Life Found On A Planet 120 Light-Years Away

[Valin]

Forbbes

Jamie Carter

Sep 13, 2023

Scientists using the Webb Space Telescope have identified a molecule in the atmosphere of another planet that could potentially be a sign of life.

During just two observations, scientists found evidence for dimethyl sulfide in the atmosphere of K2-18 b, a giant “sub-Neptune” planet about 120 light-years from the solar system in the constellation Leo.

On Earth, DMS is largely a byproduct of phytoplankton. However, its detection is preliminary and “requires further validation,” according to the authors of a paper due to be published in The Astrophysical Journal Letters.

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Or Not

Sept. 21 2023

00:00 Introduction

01:24 What do we already know about K2-18b?

04:01 How we use JWST to study exoplanet atmospheres

06:00 What has JWST found in the atmosphere of K2-18b 12:17 The caveats to these results (especially the DMS claim)

14:08 What’s next? How can we confirm or deny this claim of DMS? 15:52 Bloopers Correction:

02:38 K2-18b is LESS dense than Earth, not more dense. Verbal typo.

 

[Valin]

Probability Estimate for Attaining the Necessary Characteristics for a Life Support Body

Hugh Ross

April 1, 2004

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Probability for occurrence of all 322 parameters ≈ 10^-388

dependency factors estimate ≈ 10^-96

longevity requirements estimate ≈ 10¹⁴

Probability for occurrence of all 322 parameters ≈ 10^-304

Maximum possible number of life support bodies in universe ≈ 10²²

Thus, less than 1 chance in 10²⁸²(million trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion) exists that even one such life-support body would occur anywhere in the universe without invoking divine miracles.

 

Aug 30, 2019

[Valin]

Apr 23, 2012

Peter Ward conducts his research within The Environment Institute's Sprigg Geobiolgy Centre at the University of Adelaide.

Peter Ward has been active in Paleontology, Biology, and more recently, Astrobiology for more than 40 years. Since his Ph.D. in 1976, Ward has published more than 140 scientific papers dealing with paleontological, zoological, and astronomical topics.

He is an acknowledged world expert on mass extinctions and the role of extraterrestrial impacts on Earth. Ward was the Principal Investigator of the University of Washington node of the NASA Astrobiology Institute from 2001-2006, and in that capacity led a team of over 40 scientists and students. His career was profiled by the Pulitzer Prize winning reporter William Dietrich in The Seattle Times article "Prophet, Populist, Poet of Science."

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[Valin]

Jun 29, 2019

In this bonus interview footage from Science Uprising, astrophysicist Bijan Nemati engages in a wide-ranging discussion of the rarity of the Earth, the search for extra-terrestrial life, fine-tuning, the Big Bang, and lots more. Currently at the University of Alabama—Huntsville, Nemati spent much of his career as a scientist at NASA's famous Jet Propulsion Lab at Caltech.

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[Valin]

It Appears (and I Could Be Wrong)