Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” – Arthur C.
A controversial Harvard University cosmologist who has suggested alien lifeforms could be sailing into the solar system disguised as meteors is leading the Trump administration’ ...
ESA's Gaia mission has determined he orbits of 154,741 asteroids in our solar system. Credit: ESA/Gaia/DPAC ...
The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...
Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...
For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the third known interstellar comet ever spotted. When scientists turned NASA’s ...
A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...
A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be ...
One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...
In a new paper published in Nature today, a team of scientists (led by Martin Cordiner from the NASA Goddard Space Flight ...
An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar ...
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