WhyCosmo

 Astronomers using the James Webb Space Telescope (JWST) have made an incredible discovery: a massive exoplanet , six times the size of Jupiter , lurking just 12 light-years from Earth. Named Epsilon Indi Ab , this gas giant is the coldest and oldest exoplanet ever directly imaged. JWST directly imaged the gas giant planet Epsilon Indi Ab by blocking out the light from its host star (located where the white star symbol is placed). Credit: ESA/Webb, NASA, CSA, STScI, E. Matthews (Max Planck Institute for Astronomy) The surprise find came after a case of cosmic mistaken identity, as astronomers initially believed they were observing a different planet. Instead, they uncovered Epsilon Indi Ab, which orbits its star at a distance of 28 astronomical units (AU) – a whopping threefold increase from the initially thought nine AU. Epsilon Indi Ab orbits an orange dwarf star named Epsilon Indi A, part of a fascinating binary system with a brown dwarf. This unique setup makes it an exciti...

 The JWST (James Webb Space Telescope) has made a groundbreaking discovery by detecting the smell of rotten eggs on a nearby exoplanet, HD 189733. This "hot Jupiter," located just 13 times closer to its host star than Mercury, reveals an atmosphere filled with hydrogen sulfide, a compound responsible for the rotten odor. The JWST's spectral analysis identified hydrogen sulfide and various other sulfur compounds. These findings are significant as sulfur is considered a building block of life, making it a prime target in the searching for habitable place. Despite its sterile conditions, temperatures soaring above 900°C, and 8,000 kph winds, HD 189733 offers valuable insights into exoplanet atmospheres. The study, led by Guangwei Fu of John Hopkins University, highlighted the absence of methane in HD 189733's atmosphere, contrary to previous reports. Additionally, the exoplanet was found to have metals in its atmosphere, similar to stars. The JWST continues to be a power...