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Helium Tails

All articles tagged with #helium tails

science1 month ago•4 min saved

James Webb Telescope Detects Double Helium Tails and Extreme Weather on Distant Exoplanets

The James Webb Space Telescope observed the exoplanet WASP-121b, also known as Tylos, for nearly 37 hours, revealing the first-ever continuous observation of atmospheric escape with two enormous helium tails stretching over half its orbit, providing new insights into planetary evolution and atmospheric dynamics.

via ScienceAlert|

#atmospheric-escape #exoplanet #helium-tails

astronomy2 years ago•4 min saved

Helium Tails Discovered Escaping Jupiter-like Planet HAT-P-32 b

Astronomers using the Hobby-Eberly Telescope have discovered some of the longest tails of gas yet observed escaping a planet. The planet, HAT-P-32b, is nearly twice the size of Jupiter and losing its atmosphere through dramatic jets of helium unfurling before and behind it as it travels through space. These tails are more than 50 times the length of the planet's radius. The discovery is published in the journal Science Advances.

via Phys.org|

#astronomy #hat-p-32b #helium-tails