Related: 32 alien planets that really exist WASP-69 b's tail forms when "stellar wind" blows the leaking gas away from the exoplanet, creating a trail in its wake. Stellar wind, similar to the sun ...

In general, it is assumed that such powerful stellar winds are associated with three types of shocks that can produce X-ray emission: shocks in the wind itself, colliding winds in a binary system, and ...