Is it on earth or everywhere in space? Does it make everything disapear?
2007-05-27 10:52:44 · 3 answers · asked by Astronaut 1 in Science & Mathematics ➔ Astronomy & Space
It's called dark matter because it doesn't interact with anything - it doesn't absorb or reflect light of any kind. It might be on Earth, but probably not - the gravitational interaction of Earth and Sun doesn't suggest it. However, it is found in our galaxy, and other galaxies, and sometimes in the space between them - but again, it's hard to detect at all - just the gravitational effects.
2007-05-27 10:57:17 · answer #1 · answered by eri 7 · 0⤊ 0⤋
In a satellite system like our solar system the farther a planet orbits from the sun it must go slower or fly away.
In the milky way the outer arms are locked in step with the galactic center.
Cosmologists invented dark matter to explain why the arms do not fly away.
The milky way is not a satellite system,some other force is at work in the galactic center.
2007-05-28 10:58:17 · answer #2 · answered by Billy Butthead 7 · 0⤊ 0⤋
Darkmatter is a substance of Space which was observed by cosmology and derived from Einstein's cosmological constant in his Field Equation.Cosmologist allude to it as the cause of energy for Expansion of the Universe.
It may have been the substance that Newton refused to explain.It was just too premature a concept for science to swallow at that time.
what does it do & what is the purpose for such a substance to exist it was too chimerical to believe.
Perhaps its a short description of the Aether as what the Greeks had alluded to in ancient time ,as an indivisible substance.
2007-05-27 18:16:31 · answer #3 · answered by goring 6 · 0⤊ 0⤋