Today, 5:35 AM #1 Amazed Messages 0 Reaction score 0 Is there anything in the Universe that is not fundamentally made up of matter?
Today, 5:42 AM #2 Hornbein Gold Member Messages 3,801 Reaction score 3,071 Electromagnetic radiation has no rest mass so it is not matter. It does however attract things gravitationally to a small degree, and is produced by matter.
Electromagnetic radiation has no rest mass so it is not matter. It does however attract things gravitationally to a small degree, and is produced by matter.