You are here:
International Year of Astronomy - IYA2009
News Archives until 2010
Security & Defense
Missions and more
How is a black hole discovered?
Black holes are astrophysical objects with an almost unbelievably high mass per unit volume. Within a certain distance from the black hole this warping of space is so strong that absolutely no light or any other radiation can leave. Therefore, black holes cannot be observed. So how do astrophysicists know that they exist?
Send article link to:
Your e-mail address:
Please enter code:
Any details you supply are not stored. You will receive no unsolicited e-mails as a result.
Last update: 14/01/2010 13:55:50