Looking up at the night sky, it may seem our cosmic neighborhood is packed full of planets, stars and galaxies. But scientists have long suggested there may be far fewer galaxies in our cosmic surroundings than expected.
Astronomy
Jul 28, 2025
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310
New three-dimensional (3D) models of objects in space have been released by NASA's Chandra X-ray Observatory. These 3D models allow people to explore—and print—examples of stars in the early and end stages of their lives. ...
Astronomy
Apr 17, 2025
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33
Interstellar objects are among the last unexplored classes of solar system objects, holding tantalizing information about primitive materials from exoplanetary star systems. They pass through our solar system only once in ...
Astronomy
Mar 20, 2025
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163
The study of X-ray emission from astronomical objects reveals secrets about the universe at the largest and smallest spatial scales. Celestial X-rays are produced by black holes consuming nearby stars, emitted by the million-degree ...
Astronomy
Oct 15, 2024
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62
The Physics of the Accelerating Universe Survey (PAUS), an international collaboration across 14 institutions, has covered a sky area of 50 square degrees, similar to approximately 250 full moons.
Astronomy
Sep 28, 2024
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55
The celestial object showcased in this image from the NASA/ESA Hubble Space Telescope is the spiral galaxy UGC 9684, which lies around 240 million light-years from Earth in the constellation Boötes. This image shows an impressive ...
Astronomy
May 10, 2024
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51
Some parts of the universe only reveal important details when observed in radio waves. That explains why we have ALMA, the Atacama Large Millimeter–submillimeter Array, a collection of 7-meter and 12-meter radio telescopes ...
Astronomy
Mar 13, 2024
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28
Some 13.8 billion years ago, the universe began with a rapid expansion we call the Big Bang. After this initial expansion, which lasted a fraction of a second, gravity started to slow the universe down. But the cosmos wouldn't ...
Astronomy
Feb 6, 2024
13
97
Our Milky Way bristles with giant molecular clouds birthing stars. Based on what we see here, astronomers assume that the process of star creation also goes on similarly in other galaxies. It makes sense since their stars ...
Astronomy
Dec 29, 2023
0
118
Is there life beyond Earth? The question has turned out to be one of the hardest to answer in science. Despite the seemingly boundless expanse of the universe, which implies there's potential for abundant life, the vast distances ...
Space Exploration
Dec 5, 2023
3
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