Imagine the Universe!
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MATCH ME IF YOU CAN - LEVEL 1

Draw a line to match each vocabulary term with its definition.

supernova



a very dense star made up of neutrons
implosion



the point at the center of a black hole
escape velocity



the shrinking of a star caused by the pull of its own gravity
binary system



the speed at which an object must travel to escape the gravitational pull of another object
singularity



an explosion of a star that causes the star to shine a million times brighter than before
Universe



a process where atoms are joined and tremendous amounts of energy are released
accretion disk



two objects in orbit around each other
nuclear fusion



the huge space that contains all the matter and energy in existence
neutron star



a spiral of gas that can surround a black hole
event horizon



the spherical distance surrounding a black hole out of which nothing can escape

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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
Project Leader: Dr. Barbara Mattson
Curator: Meredith Gibb
Responsible NASA Official: Phil Newman
All material on this site has been created and updated between 1997-2014.
This page last updated: Thursday, 21-Nov-2002 11:20:10 EST