What If on MSN
Physicists explain Earth’s chances against a black hole
Imagine looking up at the night sky and learning that a black hole is racing toward Earth at nearly the speed of light. Not a ...
Black holes are regions in space where gravity is so strong that nothing, even light, can escape. Einstein's theory of ...
There are black holes that are too big to be born from the death of a star but aren’t quite supermassive either. There’s ...
Microscopic black holes have long hovered at the edge of theory, forming only in exquisitely balanced states. Now physicists ...
Inside some very special black holes, there may be a boundary called a Cauchy horizon. Columnist Leah Crane explores the ...
Physicists may soon witness a cosmic fireworks show: the explosive death of a primordial black hole. Once thought to be unimaginably rare, new research suggests there’s up to a 90% chance of catching ...
Morning Overview on MSN
A sleeping supermassive black hole just roared back to life and erupted like a cosmic volcano — radio telescopes caught its jets firing across deep space
Somewhere in the distant universe, a supermassive black hole that had gone quiet for millions of years has switched back on.
Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...
Scientists have detected the biggest black hole merger ever known — a gigantic collision from two massive space-time ruptures spiraling into each other — and it could hold evidence of the most elusive ...
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