A century after Albert Einstein unveiled a new concept to explain gravity, his so-called general relativity theory remains fertile ground for scientific observations and experiments.
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.
Our universe is actually really simple, it's just our cosmological theories that are getting needlessly complex, argues one of the world's leading theoretical physicists.
Has Stephen Hawking found the 'emergency exit' for information falling into a black hole?
A new spacecraft will test ideas to find gravitational waves in the universe.
After poring over the details of the most perfect Einstein Ring imaged to date, ALMA astronomers have discovered that this distant galaxy is a frenzy of star formation.
Astronomers have witnessed, for the first time, a relativistic collision in a black hole jet millions of light-years from Earth.
Powerful jets of material spewing from the edge of monster black holes may be more likely to arise where two galaxies have merged together.
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