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Gj 1214b

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astronomy2 years ago

James Webb telescope reveals secrets of nearby exoplanets.

The James Webb Space Telescope has discovered a mini-Neptune planet, GJ 1214b, around a star 40 light-years away. The planet's atmosphere is made of steam, indicating its past as a possible "water world." The temperature on GJ 1214b shifts dramatically from day to night, indicating that the planet's atmosphere can't be just light hydrogen molecules; instead, there has to be something else like water or methane. Astronomers hope to observe more mini-Neptunes with JWST in the near future to figure out how they are created and how this particular one ended up with so much water.

via Livescience.com|
#astronomy#exoplanet#gj-1214b
science2 years ago

James Webb telescope finds nearby star system with ancient water world.

The James Webb Space Telescope has discovered an ancient "water world" in a nearby star system. The exoplanet, GJ 1214b, is a mini-Neptune planet around a star about 40 light-years away. The planet's atmosphere is made of steam, hinting at its past as a possible "water world." The temperature on GJ 1214b shifted dramatically from day to night, indicating that the planet's atmosphere can't be just light hydrogen molecules; instead, there has to be something else like water or methane. Astronomers hope to observe more mini-Neptunes with JWST in the near future to figure out how they are created and how this particular one ended up with so much water.

via Yahoo Life|
#exoplanet#gj-1214b#james-webb-telescope
space2 years ago

JWST discovers reflective planet with potential water vapor.

A planet outside our solar system, GJ 1214b, has an "unusually shiny atmosphere" and may contain significant amounts of water vapor, according to a study published in the journal Nature. The planet is covered in a deep haze that has made it difficult to study, but the James Webb Space Telescope recently helped reveal new information about it. Researchers tracked the planet through nearly its entire orbit and found that its atmosphere reflects a large proportion of the light from its parent star instead of absorbing it and becoming hotter. The research also suggests that GJ 1214b may have formed farther away from its star, then moved inward toward its current orbit.

via CBS News|
#atmosphere#gj-1214b#james-webb-space-telescope
astronomy2 years ago

Webb Telescope Examines Enigmatic Sub-Neptune Planet

The James Webb Space Telescope has revealed that the enigmatic planet GJ 1214b is less hot than expected and surprisingly shiny. The planet is bigger than rocky planets like Earth but smaller than any of our system's ice or gas giants. The telescope detected infrared light, which showed that the planet must be highly reflective and able to scatter back about half of the incoming energy. Scientists are now trying to understand what the clouds or hazes in the atmosphere are made of. The planet's atmosphere is not hydrogen-rich, suggesting it's not just a scaled-down Neptune, and there was evidence of water vapor and methane.

via NPR|
#astronomy#gj-1214b#james-webb-space-telescope
astronomy2 years ago

JWST reveals metal-rich atmosphere on GJ 1214b.

Scientists have used the James Webb Space Telescope (JWST) to study the atmosphere of exoplanet GJ 1214b and found it to be reflective and metal-rich. The planet, which is about 40 light-years away from Earth, is a "super-Earth" with a radius about 2.7 times that of Earth. The findings suggest that GJ 1214b's atmosphere is unlike any other known exoplanet and could provide insights into the formation and evolution of planets.

via Nature.com|
#astronomy#atmosphere#exoplanet