Reliable news for an expanding universe
The signal, from two merging black holes 3 billion light-years away, is the most distant observation yet.
This month's extraterrestrial wonders include a dune-swept Martian beach, a polar view of Jupiter, and a young planetary system that seems to glare like a demonic eye.
Scientists test materials to withstand Mars’ surface and space.
This month's featured images include a commemorative portrait of the spacecraft Cassini and a composite image of dark matter.
A team of scientists develop a model that describes the accelerating expansion of the universe without the need for mysterious dark energy.
Saturn's rings, Mars' geology and an artist's depiction of distant new worlds were among this month's most captivating space images.
Access to a dark night sky is a universal human right, says the American Astronomical Society
A stellar explosion in the constellation Cygnus could be visible to the naked eye.
Pioneering astronomer who discovered observational evidence of the existence of mysterious dark matter in the universe dies at 88.
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