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 ...

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 ...

Astronomers have identified a mysterious deep-space object that appears to defy current scientific understanding, prompting renewed debate about how the universe forms and evolves over time. The ...

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 ...