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Space Weather: June 2021


The X-ray and extreme-ultra-violet (EUV) emissions from the low-mass stars significantly affect the evolution of the planetary atmosphere. It is, however, observationally difficult to constrain the stellar high-energy emission because of the interstellar extinction.

The long relationships between stars and the planets around them - including the Sun and the Earth - may be even more complex than previously thought. This is one conclusion of a new study involving thousands of stars using NASA's Chandra X-ray Observatory.