Our 24-hour day measures Earth’s rotation relative to the Sun, known as a solar day. This is slightly longer than Earth’s ...

It’s strange to think that something as ordinary as summer heat or winter cold traces back to a moment of utter chaos ...

Interstellar object 3I/ATLAS, the third such visitor ever observed, is exhibiting unusual energy and chemical behavior as it ...

If you have ever heard that Earth will soon start having 25-hour days, it might be right. The idea itself is not wrong.

A look at the most-read space stories of 2025, covering satellite activity, space missions, scientific discoveries, and natural events observed from Earth ...

SANTA CRUZ — Xi Zhang, a professor of Earth and planetary science at UC Santa Cruz, has discovered that an exoplanet classed ...

Astronomers may have uncovered a massive hidden planet far beyond Neptune, using decades-old infrared data. The object’s ...

The agency last heard from the MAVEN (Mars Atmosphere and Volatile EvolutioN) orbiter on December 6, and the last fragment of ...

The cosmic object, originating from beyond our solar system, sparked curiosity reminiscent of a science-fiction spectacle, ...

The interstellar visitor 3I/ATLAS appears to be 'ignoring' Earth, as Avi Loeb explores its mysterious anti-tail and 2026 ...

Jupiter is the largest planet in the solar system, known for its massive size, strong gravity, powerful storms and many moons ...

When interstellar comet 3I/ATLAS made its closest approach to Earth on December 19, 2025, it did not become a spectacular object in the night ...