Search by tag: « exoplanet »

12 articles found

Star blows giant exoplanet's atmosphere away
Robert Lea

05/09/2023 Reading 6 min

Source de l'article : Space.com
Star Blows Giant Exoplanet's Atmosphere Away
A hot Jupiter exoplanet is blowing its top like a cartoon character throwing a tantrum, creating a tail of gas that is the largest planetary structure seen outside the solar system.
Atmosphere Exoplanet Hat-p-32 Jupiter parent star system
NASA's exoplanet hunter TESS spots warm Jupiter with longest known year
Sharmila Kuthunur

31/08/2023 Reading 4 min

Source de l'article : Space.com
Nasa's Exoplanet Hunter Tess Spots Warm Jupiter With Longest Known Year
Astronomers using NASA's exoplanet-hunting TESS satellite have found a "warm" Jupiter with the longest period ever seen with an alien world.
Exoplanet hunter TESS TOI-4600 TOI-4600c star system
Scorching Neptune-size world is way too massive for astronomers to explain
Charles Q. Choi

30/08/2023 Reading 5 min

Source de l'article : Space.com
Scorching Neptune-Size World Is Way Too Massive For Astronomers To Explain
Astronomers have unexpectedly discovered the heaviest Neptune-like planet yet — one four times more massive than our solar system's Neptune.
Earth Exoplanet Luca Naponiello Neptune TOI-2196
Bizarre super-puffy exoplanet hosts rare 'thermometer molecule'
Robert Lea

29/08/2023 Reading 5 min

Source de l'article : Space.com
Bizarre Super-Puffy Exoplanet Hosts Rare 'Thermometer Molecule'
A rare temperature-sensitive molecule usually found in stars has been discovered in the atmosphere of an exoplanet for the first time, a marshmallow-like hot Jupiter called WASP-31b.
Chromium hydride Exoplanet Laura Flagg WASP -17 atmosphere team
Record-breaking 'failed' star orbiting stellar corpse is 3
Tereza Pultarova

15/08/2023 Reading 4 min

Source de l'article : Space.com
Record-Breaking 'Failed' Star Orbiting Stellar Corpse Is 3
Astronomers have discovered a failed star that can't sustain nuclear fusion in its core, but is 3,600 degrees Fahrenheit hotter than the sun.
Dwarf James Webb Space Jupiter Named WD 0032-317 exoplanet sun
Stunning time-lapse video captures 17-year journey of exoplanet around its star
Robert Lea

10/08/2023 Reading 5 min

Source de l'article : Space.com
Stunning Time-Lapse Video Captures 17-Year Journey Of Exoplanet Around Its Star
An incredible time-lapse video tracks the 17-year journey of a distant and massive exoplanet, Beta Pictoris b, around its parent star between 2003 and 2020.
Beta Pictoris Exoplanet Footage Jason Wang Parent star orbit
The powerful winds of super magnetic stars could destroy the possibility for life on their exoplanets
Robert Lea

09/08/2023 Reading 5 min

Source de l'article : Space.com
The Powerful Winds Of Super Magnetic Stars Could Destroy The Possibility For Life On Their Exoplanets
Cool stars with powerful magnetic fields could have remarkably fast stellar winds that strip away their planets' atmospheres, making even "habitable zone" worlds less friendly to life.
M-type exoplanet life star sun wind
A Jupiter-size exoplanet formed around a tiny star
Robert Lea

04/08/2023 Reading 4 min

Source de l'article : Space.com
A Jupiter-Size Exoplanet Formed Around A Tiny Star
Astronomers are surprised by a metal-rich, massive planet orbiting a tiny star because gas giants aren't supposed to be able to form around such diminutive red dwarf stars.
Exoplanet SPECULOOS TOI-4860 University of Birmingham Ph. D. gas star
Stars with superpowered magnetic fields could narrow the search for alien life
Robert Lea

31/07/2023 Reading 4 min

Source de l'article : Space.com
Stars With Superpowered Magnetic Fields Could Narrow The Search For Alien Life
With unusually powerful magnetic fields, these stars seem to get a boost when their cores start to drift apart. Thus, they may not be the ideal hosts for habitable exoplanets.
10 Beehive cluster Magnetism Messier 44 exoplanet team
Hubble telescope sees an angry star and an evaporating planet
Monisha Ravisetti

28/07/2023 Reading 7 min

Source de l'article : Space.com
Hubble Telescope Sees An Angry Star And An Evaporating Planet
Quite close to our solar system, an angry red dwarf star is terrorizing a misfortunate planet by ripping away the world's atmosphere.
10 Hubble Keighley Rockliffe Mic atmosphere exoplanet
James Webb Space Telescope spies water near center of planet-forming disk in cosmic 1st
Charles Q. Choi

24/07/2023 Reading 4 min

Source de l'article : Space.com
James Webb Space Telescope Spies Water Near Center Of Planet-Forming Disk In Cosmic 1st
Rocky exoplanets could possess large amounts of water from the moment they form, observations by the James Webb Space Telescope suggest.
Exoplanet James Webb Space PDS 70 Planet-forming disk water
400 Earth-size rogue planets could be wandering the Milky Way
Robert Lea

24/07/2023 Reading 7 min

Source de l'article : Space.com
400 Earth-Size Rogue Planets Could Be Wandering The Milky Way
When NASA's Nancy Grace Roman Telescope comes online, it could be capable of spotting as many as 400 Earth-size rogue planets, and that might merely be the tip of the iceberg.
NASA Nancy Grace Roman Space exoplanet lensing planet rogue