Inside-Out Planets, Alien Weather & the Most Distant Radio Burst
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Inside-Out Planets, Alien Weather & the Most Distant Radio Burst
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(00:01:17) Webb Watches Alien Weather
(00:02:22) Most Distant Fast Radio Burst
(00:03:24) Giant Planet Around Tiny Star
(00:04:02) Starlink Keeps Flying
(00:04:13) Today's Key Signals
Today's astronomy daily news delivers four stories that are actively rewriting the rulebooks of planetary science, atmospheric physics, and cosmology.
Star LHS 1903 hosts a planetary system built in reverse — rocky, gas, gas, rocky — a architecture that standard planet formation theory cannot cleanly explain. The leading candidate, sequential formation, is plausible but unproven, and the outer rocky world's origin in a gas-depleted disk remains an open question. It joins a growing list of systems that suggest planet formation is far messier than our solar system implies.
Webb has delivered a genuine first: direct confirmation of changing cloud thickness and atmospheric circulation on WISE 0855, the coldest known brown dwarf. Previous cloud dynamics on extrasolar objects were modelled and inferred. This is observed. That distinction matters enormously — real-time atmospheric monitoring of distant substellar worlds is now a realistic scientific tool.
Also from Webb: FRB 20240304B is now the most distant fast radio burst with a confirmed host galaxy, at redshift 2.148 — placing it during cosmic noon, roughly three billion years after the Big Bang. Its host is a dwarf galaxy, roughly a thousand times smaller than the Milky Way, which deepens the mystery of what actually produces these bursts.
A candidate giant planet, PALTA-1 b, has been identified around an ultracool dwarf via eight years of astrometric data — a rare class of object that challenges assumptions about large-planet formation around small stars.
SpaceX also launched 27 Starlink V2 Mini satellites from Vandenberg, with Booster B1088 completing its twentieth flight.
A YesWee production. Built using AI technology.
This episode includes AI-generated content.
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