which means it's unlikely to ever run out of gas in its atmosphere (WASP-69 b is roughly 90 times the mass of Earth.) The exoplanet's tail is astonishingly long, extending more than 7.5 times its ...

WASP-69 b, a distant gas giant located 163 light-years from Earth, has been observed with a striking comet-like tail composed of escaping gases. This extraordinary feature is not just an aesthetic ...