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Dark Matter

Try this!

Close all of the blinds and curtains in a room, then turn off all the lights. Move around the room, feeling your way through. Can you identify any of the objects in the room by touch? What can you say about the matter surrounding these objects?

Think of it as dark matter. Dark matter is a substance that is known to exist but is itself undetectable. It has mass and is believed to take up greater than 90% of the mass of the Universe.

Can you name any other substances which have mass and are invisible?

What methods can be used to detect the presence of these substances?


This activity was developed by Jacqueline Slay, Largo High School, Largo, MD

If words seem to be missing from the articles, please read this.

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: Wednesday, 17-Nov-2004 15:33:04 EST