Discover which planet is the fastest in the solar system. Learn why Mercury moves at 47 km/s, has the shortest year, and ...

Ancient Chinese astronomers observed a solar eclipse in 709 BCE with remarkable detail. These old records are now helping ...

Two asteroids are set for safe flybys near Earth, reassuring the public that no threat exists. NASA emphasizes these events ...

Space is inaccessible to the vast majority of us, but it’s not as far away as you might think. The von Kármán Line, which is ...

Summary: Time doesn’t flow uniformly across the solar system, and new research reveals just how differently it unfolds on Mars compared with Earth. By tracing subtle gravitational and orbital ...

Long before modern observatories and spacecraft, court scribes in ancient China were quietly building one of humanity’s first ...

Orbital solar power faces a $20 billion Cassiopeia build cost, giving you a clear view of where it could pay off first in practice. The design and ...

NASA has been observing bodies in space for a long time and compiled lists of behavioral patterns and discovered an asteroid ...

This temporal lag is a direct consequence of Albert Einstein’s Theory of General Relativity. The rule is simple: the weaker ...

Inspired by a restored 19th-century clock, the piece features three subdials that keep track of time and distances.

A scientist has identified a possible astronomical explanation for the Star of Bethlehem, as described in the Bible ...

Astronomers have long sought a cosmic explanation for the Bible’s Star of Bethlehem, the shining celestial object that, so ...