what are black hole,how they look and what can they do
where are black holes
This is how black holes look like we have a black hole in the center of our galaxy and our solar system is at the side.
Sagittarius A* is a bright and very compact astronomical radio
source at the center of the Milky Way, near the border of the
constellations Sagittarius and Scorpius.
what are black holes
A black hole is a place in space where gravity pulls so much that even
light can not get out. The gravity is so strong because matter has been
squeezed into a tiny space. This can happen when a star is dying.
No light can get out from black hole so ve can't see it with eyes or telescopes,they are invisible to us space telescopes eith special tools hels us to see a black hole.
Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom.These black hole have a mass more than mount everest.Black hole are the objects having highest density in the Universe.
what black holes can do
EVENT HORIZON
A black hole is therefore bounded by a well-defined surface or edge known as the “event horizon”, within which nothing can be seen and nothing can escape, because the necessary escape velocity would equal or exceed the speed of light (a physical impossibility). The event horizon
acts like a kind of one-way membrane, similar to the
"point-of-no-return" a boat experiences when approaching a whirlpool and
reaching the point where it is no longer possible to navigate against
the flow. Or, to look at it in a different way, within the event horizon, space itself is falling into the black hole at a notional speed greater than the speed of light.
TIME TRAVELL
Teleportation and travelling forwards through time may be possible
through wormholes, the bipolar black holes that link different regions
of the universe. This is the conclusion drawn from a model
created by Kyriakos Papadodimas of CERN and Rik van Breukelen of the
University of Geneva. Instantaneous travel and travel into the future
would become possible by travelling through a wormhole, and this
completely free of the time dilation predicted by Einstein’s theory of
relativity. It is, however, “a purely theoretical model that would only
apply to an elementary particle, such as a photon”, adds van Breukelen.
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