Artist's concept of a rocky planet in orbit around a distant star.
NASA, ESA and G. Bacon (STScI)

Artist's concept of a rocky planet in orbit around a distant star.
NASA, ESA and G. Bacon (STScI)

Artist's concept of a rocky planet in orbit around a distant star.
NASA, ESA and G. Bacon (STScI)

The source of this material is Windows to the Universe, at http://www.windows.ucar.edu/ at the University Corporation for Atmospheric Research (UCAR). © The Regents of the University of Michigan. All Rights Reserved. Site policies and disclaimer