Big fancy space telescopes are all well and good, but there’s something about being able to see things with your own ...

The concept known as “Kessler Syndrome” was proposed nearly five decades ago. Experts weigh in on whether the space-based disaster scenario is already unfolding.

Kessler syndrome could make space exploration and the use of satellites dangerous, or even unfeasible, for many generations.

The Empty Space Phenomenon serves as an alternate dimension for battles, activated by aliens targeting humans. It acts as a plot device to allow supernatural encounters and suggests the existence ...

Eventually, Euclid's observations will help scientists parse the mysteries of dark matter and dark energy — two phenomena ...

A 2018 astronaut photo shows a festive, fir-tree-shaped artificial reservoir in Iraq decorated with both natural and imagined ...

When I asked readers on social media for suggestions about the coolest things they’ve seen in spaceflight during the last 25 ...