Deep space has just delivered a cosmic riddle that refuses to fit any familiar category. Astronomers using some of the most powerful observatories ever built have identified a vast, dim structure that ...

A newly discovered interstellar object is racing toward our solar system, capturing the attention of scientists worldwide. Unlike other known celestial bodies, this object appears to be emitting its ...

Scientists using a global array of radio telescopes have detected the universe’s lowest-mass dark object by observing how it warped light through gravitational lensing. The invisible mass, about a ...

An illustration of the asteroid Apophis, which will make a close flyby of the Earth in April 2029. Credit: ESA Science Office A niche corner of the commercial space sector is attracting attention from ...