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Astronomy 19 hours ago

Webb unveils stunning ejecta and CO structures in Cassiopeia A's young supernova

The SETI Institute announced the latest findings from the James Webb Space Telescope (JWST) of the supernova remnant, Cassiopeia A (Cas A). These observations of the youngest known core collapse supernova in the Milky Way ...

Astronomy Jul 11, 2024

Q&A: Researcher discusses how gravitational waves hint at dark matter and Big Bang mysteries

Gravitational waves, ripples in space-time predicted by Einstein almost a century ago, were detected for the first time in 2015. A new study led by Yanou Cui, an associate professor of physics and astronomy at the University ...

Astronomy Jul 9, 2024

We need to consider alternatives to dark matter that better explain cosmological observations

Do constants of nature—the numbers that determine how things behave, like the speed of light—change over time as the universe expands? Does light get a little tired traveling vast cosmic distances? It was believed that ...

Astronomy Jul 3, 2024

Astronomers observe a strong shock front in galaxy cluster SPT-CLJ 2031-4037

Using NASA's Chandra X-ray spacecraft, astronomers from the University of Alabama in Huntsville have observed a merging galaxy cluster known as SPT-CLJ 2031-4037. They detected a rarely seen strong shock front in this galaxy ...

Astronomy Jun 28, 2024

Tiny bright objects discovered at dawn of universe baffle scientists

A recent discovery by NASA's James Webb Space Telescope (JWST) confirmed that luminous, very red objects previously detected in the early universe upend conventional thinking about the origins and evolution of galaxies and ...

Astronomy Jun 24, 2024

Webb Space Telescope captures star clusters in Cosmic Gems arc

An international team of astronomers has used the NASA/ESA/CSA James Webb Space Telescope to discover gravitationally bound star clusters when the universe was 460 million years old. This is the first discovery of star clusters ...

Astronomy Jun 22, 2024

China, France launch satellite to better understand the universe

A French-Chinese satellite blasted off Saturday on a hunt for the mightiest explosions in the universe, in a notable example of cooperation between a Western power and the Asian giant.

Astronomy Jun 21, 2024

A black hole of inexplicable mass: JWST observations reveal a mature quasar at cosmic dawn

The James Webb Space Telescope observed a galaxy in a particularly young stage of the universe. Looking back into the past, it became clear that the light from the galaxy called J1120+0641 took almost as long to reach Earth ...

Astronomy Jun 20, 2024

Simons Observatory begins measurements to probe Big Bang inflation

Almost 14 billion years ago, the universe was born in a blur of mystery. The new Simons Observatory in Chile's Atacama Desert may soon answer the great scientific question of what happened in that tiny fraction of a second ...

Astronomy Jun 20, 2024

The earliest merging quasars ever seen

Studying the history of science shows how often serendipity plays a role in some of the most important discoveries. Sometimes, the stories are apocryphal, like Newton getting hit on the head with an apple. But sometimes, ...

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