An interstellar comet changed its chemistry after passing the Sun, revealing hidden layers and a surprising mix of carbon ...

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 ...

Starlight has been the key to finding thousands of exoplanets over the past decade, but researchers have found a new way to ...

A comet named 3I/ATLAS was first discovered on July 1, 2025, and is located about 420 million miles away from Earth, ...

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.

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

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

The comet has been on our radars since the summer of 2025, when the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Río Hurtado, Chile, spotted it for the first time. It was ...

A team of astronomers from the European Space Agency have found that a huge interstellar object in space is ejecting water ...