Helium could make up almost half the mass of the atmosphere of giant exoplanets that have migrated close to their star , explaining why there is a mysterious size gap in the scale of these worlds.
Over 5,200 exoplanets have now been confirmed, and many of these are larger worlds that orbit close to their star, in some cases with orbital periods that last just a few days.
The symphony's performance of "The Planets" was — sorry — out of this world | Pittsburgh ...
Journey to the center of terrestrial planets | astrobites
Title: Detailed chemical compositions of planet-hosting stars – II. Exploration of the interiors of terrestrial-type exoplanets
First Author's Institution: Institute for Particle Physics and Astrophysics, ETH Zürich, Wolfgang-Pauli-Strasse 27, 8093 Zürich, Switzerland
2023, March 7: Venus, Jupiter, Mars, Evening Planets, Worm Moon
March 7, 2023: Venus and Jupiter appear near each other in the west while Mars nears a conjunction with the Bull's northern horn. The moon is Full in the morning, the Worm moon.
Chicago, Illinois: Sunrise, 6:16 a.m. CST; Sunset, 5:48 p.m. CST. Check local sources for sunrise and sunset times for your location. Times are calculated from the U.S. Naval Observatory's MICA computer program.
Puffy helium planets could explain exoplanet size mystery https://t.co/wC3mRsReZg https://t.co/WGXr0N2gpQ SPACEdotcom (from NYC) Fri Feb 10 21:03:24 +0000 2023
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