a large watermelon
the height of Michael Jordan
the height of a full size refrigerator
a green pea
the length of a Lincoln Town Car
a soccer ball
the length of the Mississippi River
the height of Mt. Everest
the average man's shoe size
the length of an Olympic size swimming pool
Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.
The Imagine Team
Acting Project Leader: Dr. Barbara Mattson
All material on this site has been created and updated between 1997-2012.