GARY TONGE / SCIENCE PHOTO LIBRARY GARY TONGE / SCIENCE PHOTO LIBRARY
Alien planet in space. Illustration of an extrasolar planet and its moon, set against a backdrop of a spiral galaxy and a starry sky. Exoplanets so far discovered range from very large gas giant planets to rocky planets of various sizes. Hundreds of alien planets have been detected, and their planetary systems studied, with many thousands more not yet confirmed.
Model release not required. Property release not required.