Nasa's James Webb Telescope may have discovered a molecule thought only to be produced by life.

Nasa’s James Webb Space Telescope may have discovered tentative evidence of a sign of life on a faraway planet.

It may have detected a molecule called dimethyl sulphide (DMS). On Earth, at least, this is only produced by life.

The researchers stress that the detection on the planet 120 light years away is “not robust” and more data is needed to confirm its presence.

Researchers have also detected methane and CO2 in the planet’s atmosphere.

Detection of these gases could mean the planet, named K2-18b, has a water ocean.

Prof Nikku Madhusudhan, of the University of Cambridge, who led the research, told BBC News that his entire team were ‘‘shocked’’ when they saw the results.

“On Earth, DMS is only produced by life. The bulk of it in Earth’s atmosphere is emitted from phytoplankton in marine environments,” he said.

But Prof Madhusudhan described the detection of DMS as tentative and said that more data would be needed to confirm its presence. Those results are expected in a year.

‘‘If confirmed, it would be a huge deal and I feel a responsibility to get this right if we are making such a big claim.’’

It is the first time astronomers have detected the possibility of DMS in a planet orbiting a distant star.

  • @mounderfod
    44•1 year ago

    Heck even if they don’t find life it’ll be interesting to find out how dimethyl sulphide might be getting produced there

  • @Hubi@feddit.de
    35•1 year ago

    JWST is able to analyse the light that passes through the faraway planet’s atmosphere. That light contains the chemical signature of molecules in its atmosphere. The details can be deciphered by splitting the light into its constituent frequencies - rather like a prism creating a rainbow spectrum. If parts of the resulting spectrum are missing, it has been absorbed by chemicals in the planet’s atmosphere, enabling researchers to discover its composition.

    That is pretty wild.

    • @Tatters@feddit.uk
      6•1 year ago

      Sadly, I think you overestimate the general interest there would be in such an announcement. Also, it is not as though we will be getting images of little green aliens, any evidence will be far more circumstantial, tentative and over many years. It will be hard to sustain any public excitement for that long.

      • @Perfide@reddthat.com
        9•1 year ago

        Both of you are right. The general public will give this a passing interest at best since it’s not roswell greys or some shit… but this would still be the biggest news in history if confirmed. As far as “big scientific questions still unanswered” goes, actual confirmation of extraterrestrial life existing is only 1 tier of holy-shitness down, imo, from things like fully understanding consciousness or dark matter.

        For most of history humanity thought we were alone, and even now(or till now if this is confirmed I guess) the “official” stance is still only “there’s no evidence but the universe is so incomprehensibly large there probably is something, y’know, somewhere. Maybe.”

      • Semi-Hemi-Demigod
        4•1 year ago

        “Possible microbial life hundreds of light years away” isn’t nearly as fun as “They’re here and they have infinite energy devices.”

    • @xts@lemmy.worldEnglish
      4•1 year ago

      Don’t think we’ll ever be able to “confirm” it the same way we can confirm if there’s/was life on Mars, Venus, Europa, etc.

      It’s just too far away

  • @NanoooK@sh.itjust.works
    15•1 year ago

    JWST has only operated for less than 2 years and already provides so much data. I can’t wait for more discoveries.

    • FuglyDuckEnglish
      7•1 year ago

      The coolest part is the things it’s now opening time on the Hubble up for.

      Like.

      JWST is no doubt amazing, but let’s not discount the amazing data Hubble is still churning out…. Because everyone wants the best.

  • @untrainedtribble@lemmy.world
    9•1 year ago

    Too bad it’s 9 times the size of the earth (I don’t know what it’s mass is) so likely not suitable for humans. Still finding life outside earth would be absolutely incredible, and I agree, the most historic discovery of humankind

    • Tetra
      1•1 year ago

      I’m assuming even there is some on an icy moon of the solar system, since they don’t have an atmosphere we can’t detect it as easily.