When two black holes collide, the impact is so big that we can detect it all way here on Earth. These objects are so immense that their collisions send ripples through spacetime itself. Scientists call these ripples gravitational ...
Astronomy
Oct 11, 2023
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94
Radio astronomy and satellite communication have a long common history. Advances made in one field have benefitted the other, and our modern era of spacecraft and mobile internet is a product of this partnership. But there ...
Astronomy
Oct 9, 2023
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26
With his theory of General Relativity in 1915, Albert Einstein revolutionized how we think about our universe. Rather than the cosmos simply providing the room for the planets and stars to orbit each other, space and time ...
Astronomy
Oct 5, 2023
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107
A small team of astrophysicists and mathematicians from the University of Southampton, the University of Cambridge and Institut de Ci'encies del Cosmos Universitat de Barcelona has proposed that certain pairings of black ...
For those still holding out hope that antimatter levitates rather than falls in a gravitational field, like normal matter, the results of a new experiment are a dose of cold reality.
General Physics
Sep 27, 2023
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Einstein's theory of gravity—general relativity—has been very successful for more than a century. However, it has theoretical shortcomings. This is not surprising: the theory predicts its own failure at spacetime singularities ...
General Physics
Sep 25, 2023
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Quantum entanglement is a physical process through which pairs of particles become connected and remain so even when separated by vast distances. This fascinating phenomenon has been the focus of numerous research studies, ...
Millisecond pulsars are amazing astronomical tools. They are fast-rotating neutron stars that sweep beams of radio energy from their magnetic poles, and when they are aligned just right we see them as rapidly flashing radio ...
Astronomy
Sep 4, 2023
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67
In 1929 Edwin Hubble published the first solid evidence that the universe is expanding. Drawing upon data from Vesto Slipher and Henrietta Leavitt, Hubble demonstrated a correlation between galactic distance and redshift. ...
Astronomy
Aug 21, 2023
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131
At the heart of our galaxy, there is a monster black hole. Known as Sagittarius A*, it has a mass of 4.2 million suns, and it's only about 27,000 light-years from Earth. Sag A* is the closest supermassive black hole, and ...
Astronomy
Aug 3, 2023
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