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#jameswebb

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NASA have written this up here: nasa.gov/universe/exoplanets/w

“The abundance of methane and carbon dioxide, and shortage of ammonia, support the hypothesis that there may be a water ocean underneath a hydrogen-rich atmosphere in K2-18 b. These initial #Webb observations also provided a possible detection of a molecule called dimethyl sulfide (DMS). On Earth, this is only produced by life. The bulk of the DMS in Earth’s atmosphere is emitted from phytoplankton in marine environments.”

#JamesWebb #Space #SETI (well, life, not intelligence…) #Science mastodon.social/@pomaranc/1141

NASA · Webb Discovers Methane, Carbon Dioxide in Atmosphere of K2-18 b - NASAA new investigation with NASA’s James Webb Space Telescope into K2-18 b, an exoplanet 8.6 times as massive as Earth, has revealed the presence of

NASA's Webb Images Young, Giant Exoplanets, Detects Carbon Dioxide
Findings suggest giant exoplanets in HR 8799 system likely formed like Jupiter and Saturn.

The first planet outside our solar system was discovered in the 1990’s, but it wasn’t until more than a decade later astronomers actually obtained a direct image of one. It’s extremely difficult to image an exoplanet, as stars in other planetary systems can be thousands of times brighter and bigger than their planets.

NASA’s James Webb Space Telescope is equipped with a highly sensitive coronagraph, a tiny mask that blocks the light of the star, allowing Webb to image exoplanets.

Webb’s new images of two iconic systems, HR 8799 and 51 Eridani, and their planets have stunned researchers, and provided additional information into the chemical make-up of the young gas giants.

#JamesWebb #NASA #exoplanets #carbondioxide

webbtelescope.org/contents/new

arstechnica.com/space/2025/02/

Cada vez que leo cosas de estas me voy emocionando

La frase "se ha autorizado el uso del telescopio espacial James Webb con fines de defensa planetaria" me hace cosquillas en la parte del cerebro que ama la scifi

Ars Technica · The odds of a city-killer asteroid impact in 2032 keep rising. Should we be worried?By Eric Berger

Hat jemand praktische Erfahrung mit 3d Brillen und "Content" zum Universum? Kann man da was empfehlen? Es geht um eine virtuelle Reise durch das Universum, möglichst realistisch, um die Faszination des Alls zu erkunden, vlt. sogar auf Basis echten Bildmaterials. Am liebsten nicht mit einer Papphalterung für's smartphone, sondern mit einer "echten" #vrbrille.

#virtualreality #weltraum #sonnensystem #3d #faszinationweltall #dlr #nasa #esa #universum #hubble #jameswebb #teleskop #astronomie

@DLR