Second only to black holes, neutron stars—incredibly dense star remnants—are the densest objects in the universe. When ...

New data suggest the Bullet Cluster's lensing may be explained with fewer or no dark matter assumptions, reviving an ...

Our space traffic management efforts need to improve. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Researchers have found that trying to avoid ...

Human space activities are becoming increasingly frequent, generating a significant amount of space debris that poses a serious threat to the safety of orbiting spacecraft. Tracking and predicting ...

astronomers has uncovered a third galaxy devoid of dark matter, challenging conventional wisdom about the invisible substance that is believed to hold galaxies together. Published in a new study ...

How did the Moon form? Was it from a collision, as has been the longstanding theory, or could it have been captured by the Earth early in our planet’s formation? This is what a recent study published ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Pluto landed its largest moon, Charon, with a 'kiss'—overturning ...

Wider participation in the space economy brings both opportunities and challenges, including a heightened risk of satellite collisions. Since no one group controls space, the open sharing of space ...

The formation of Mercury remains an unsolved mystery. The planet closest to the sun has a disproportionately large metallic core—accounting for about 70% of its mass—and a relatively small rocky ...

Related: Performing evasive maneuvers increases satellites' collision risk down the road Hugh Lewis, a professor of astronautics at the University of Southampton in the U.K. and Europe's leading space ...