EarthSky Blog 11 Nov 2021, 12:36 UTC Ultra-hot Jupiters – named as such because of their physical similarities to the planet Jupiter – are exoplanets that orbit stars other than the sun with temperatures so high that the molecules in their atmospheres are completely torn apart.
Nanowerk Space Exploration News 10 Nov 2021, 16:18 UTC Strange ‘eggshell planets’ are among the rich variety of exoplanets possible, according to a study from Washington University in St. Louis. These rocky worlds have an ultra-thin outer brittle layer and little to no topography. Such worlds are unlikely to have plate tectonics, raising questions as to their habitability.
Centauri Dreams 10 Nov 2021, 14:59 UTC Although we’ve been talking this week about big telescopes, from extremely large designs like the Thirty Meter Telescope and the European Extremely Large Telescope to the space-based HabEx/LUVOIR descendant prioritized by Astro2020, small instruments continue to do interesting work around the edges. I just noticed a tiny one called the Star-Planet Activity Research CubeSat (SPARCS) that fills a gap in our study of M-dwarfs, those small stars whose flares are so problematic for habitability.
Universe Today 8 Nov 2021, 20:05 UTC The field of extrasolar planet research has advanced by leaps and bounds over the past fifteen years. To date, astronomers have relied on space-based and ground-based telescopes to confirm the existence of 4,566 exoplanets in 3,385 systems, with another 7,913 candidates awaiting confirmation. More importantly, in the past few years, the focus of exoplanet studies has slowly shifted from the process of discovery towards characterization.
Starts With a Bang! 8 Nov 2021, 15:01 UTC Our Sun will continue to grow, becoming a red giant and then a planetary nebula. Here’s how large it will get.