A visualization of the accretion disk around a black hole. Jeremy Schnittman / NASA Goddard Space Flight Center hide caption
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Researchers used computer simulations of black holes and machine learning to generate a revised version (right) of the famous first image of a black hole that was released back in 2019 (left). Medeiros et al 2023 hide caption
Illustration of the expansion of the Universe. The Cosmos began 13.7 billion years ago (left). Immediately it began expanding and cooling (stage 1). Its expansion slowed about 10 billion years ago (stage 2). We are now at stage 4. The expansion shows no signs of stopping and is in fact accelerating. The orange arrows indicate the force of gravity, which slows but does not stop the expansion. MARK GARLICK/SCIENCE PHOTO LIBRA/Getty Images/Science Photo Libra hide caption
An artistic image of what happens when a monstrous black hole collides with — and gulps down — a neutron star the size of a large city. Carl Knox/OzGrav/Swinburne hide caption
When A City-Size Star Becomes A Black Hole's Lunch, The Universe Roils
This graphic shows the path of Tuesday's solar eclipse and how much you can see from different places. The yellow band represents the path of totality, or the areas in which a total eclipse will be visible. Other areas will be able to see a partial solar eclipse. Michael Zeiler, greatamericaneclipse.com hide caption
The Laser Interferometer Gravitational-Wave Observatory is made up of two detectors, this one in Livingston, La., and one near Hanford, Wash. The detectors use giant arms in the shape of an "L" to measure tiny ripples in the fabric of the universe. Caltech/MIT/LIGO Lab hide caption
Massive U.S. Machines That Hunt For Ripples In Space-Time Just Got An Upgrade
The owner of a Jerusalem auction house holds up a note on happiness written by Albert Einstein in 1922. The note, which Einstein gave to a courier in lieu of a tip, sold for $1.56 million on Tuesday to an anonymous buyer. Menahem Kahana/AFP/Getty Images hide caption
The collision of two neutron stars, seen in an artist's rendering, created both gravitational waves and gamma rays. Researchers used those signals to locate the event with optical telescopes. Robin Dienel/Carnegie Institution for Science hide caption
Astronomers Strike Gravitational Gold In Colliding Neutron Stars
A jet emanating from galaxy M87 can be seen in this July 6, 2000, photo taken by the Hubble Space Telescope. J.A. Biretta, Hubble Heritage Team/NASA hide caption
Mathematical physicist Albert Einstein delivers one of his recorded lectures in 1955. Keystone/Getty Images hide caption
Lasers and mirrors are used to carefully measure shifts in space-time. To avoid contamination, protective clothing must be worn at all times. LIGO Lab/Caltech/MIT hide caption
Albert Einstein once wrote that he was indebted to a favorite uncle for giving him a toy steam engine when he was a boy, launching a lifelong interest in science. AP hide caption
An image from a simulation of two black holes merging. Courtesy of SXS Collaboration hide caption
Einstein, A Hunch And Decades Of Work: How Scientists Found Gravitational Waves
A Star-Crossed 'Scientific Fact': The Story Of Vulcan, Planet That Never Was
