The first planet ever detected around a sun-like star, 51 Pegasi b was also the first "Hot Jupiter" ever discovered. Here we see the planet's sunlit side. The edges of the planet are blue from Rayleigh Scattering, but it glows red from beneath sparse silicate clouds towards the center of its disk. Superheated by its torturously close parent star, 51 Pegasi b's atmosphere is bloated and is slowly evaporating into space.