The moment of first contact with extraterrestrials is a staple of scifi. The discovery of extraterrestrial intelligence is more likely to emerge as a faint anomaly in astronomical data, followed by painstaking process of verification and peer review.
An interstellar traveler has been discovered passing through our solar system.
An international team of astronomers unveiled the most compelling evidence to date that dark energy — a mysterious phenomenon pushing our universe to expand ever faster — is not a constant force of nature but one that ebbs and flows through time.
Astronomers believe that a mysterious, invisible substance fills up the universe. Known as dark matter, they think it is a new kind of particle. But efforts over decades to find this particle have come up short.
This new finding from the NANOGrav team is like adding another color – gravitational waves – to the picture of the early universe that is just starting to emerge, in large part thanks to the James Webb Space Telescope.
Physicists believe most of the matter in the universe is made up of an invisible substance that we only know about by its indirect effects on the stars and galaxies we can see. But the nature of dark matter is a longstanding puzzle.
All forms of energy affect the expanding Universe. But if matter and radiation slow the expansion down, how does dark energy speed it up?
Research led by the Atacama Cosmology Telescope collaboration maps the universe’s cosmic growth supporting Einstein's theory of general relativity.
How, and whether, to keep atomic time in sync with Earth's rotation is still up for debate.
A group including Native Hawaiians will now manage the mountain Maunakea, where Indigenous rights and astronomy have collided.
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