Exactly 100 years ago on Nov. 25, 2015, physicist Albert Einstein, then 36, presented a fourth and final lecture to the Prussian Academy of Sciences about his new general theory of relativity.
To celebrate 100 years since Einstein formulated his theory of general relativity, we celebrate the beautiful observations created by a spacetime phenomenon known as gravitational lensing.
The explosion in a distant galaxy cluster is ongoing and has been continuing for the last 100 million years.
If you could hear the stuff that swirls around black holes, it would probably sound like the empty spaces on the radio dial.
The supermassive black hole in the center of our galaxy has started to stir and astronomers are pondering whether the uptick in flare activity has been triggered by the passage of a mysterious dust-enshrouded star.
In a galaxy, 600 million light-years away, a black hole deathmatch is ripping up spacetime, exposing some fascinating dynamics at the heart of a powerful quasar.
Has Stephen Hawking found the 'emergency exit' for information falling into a black hole?
Stephen Hawking may have just solved one of the most vexing mysteries in physics — the 'information paradox.'
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