Usually, comets are dormant blocks of rock and ice. They only wake up when they get close to a star. The intense heat causes ...

Comet 41P/Tuttle-Giacobini-Kresak has begun acting a little unusually, but there are likely natural explanations before we go ...

A mysterious visitor from another star system is carrying secrets billions of years old. Its composition could reveal how ...

A new comet should be visible to the naked eye this week, but you're going to need to set an alarm to see it.

The comet has been on our radars since the summer of 2025, when the Asteroid Terrestrial-impact Last Alert System (ATLAS) ...

Missing US scientists’ mystery: Harvard astrophysicist Avi Loeb urges caution regarding a series of unexplained deaths and ...

I thought about the interstellar visitor as my daughter, wife, and I took turns dragging his wandering monster truck balloon ...

White House press secretary Karoline Leavitt said Friday that the Trump administration is looking into whether there may be a ...

In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

The interstellar comet 3I/ATLAS releases water equivalent to 70 Olympic pools daily, providing insights into ancient ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...