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74Our Universe, A Black Hole
by sandra rinck
A black hole is caused when a neutron stars mass becomes so dense that it collapses in on itself. A neutron star is an extremely small star, maybe a 10 kilometer radius, whose density is about 100 million... published 7 months ago
1Source of Mysterious Antimatter Found
by blooming
Antimatter, which annihilates matter upon contact, seems to be rare in the universe. Still, for decades, scientists had clues that a vast cloud of antimatter lurked in space, but they did not know where it... published 11 months ago
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