Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick ...

Interstellar visitor 3I/ATLAS is accelerating without a comet tail, sparking a fierce debate: Is it a strange natural wonder, ...

In a surprising turn, new images revealed that 3I/ATLAS lost its tail after passing close to the Sun. Typically, solar heat ...

As NASA prepared astronauts for its second mission into space, National Geographic had exclusive behind-the-scenes access for ...

In a new book, NASA astrobiologist Caleb Scharf says the fate of life on Earth may hinge on leaving our planet behind ...

It came from deep space, and the questions surrounding it are only growing. The mysterious, ~20-kilometre (12-mile) wide ...

Astronomers are puzzled as interstellar comet 3I/ATLAS suddenly speeds up, changes colour, and loses its tail.

The mysterious interstellar comet 3i/Atlas shocks scientists with its color shift, powerful jets, and speed: A true ...

I/ATLAS could have exploded near the Sun if it is a comet, explaining the sudden brightening and the shooting jets observed recently. However, in case it didn't, then it might point to the theory ...

Harvard physicist Avi Loeb calculates that the probability of the giant interstellar object 3I/ATLAS being a natural comet is ...

Harvard astronomer Avi Loeb warns that the unexpected speed boost of interstellar object 3I/ATLAS demands vast power.

Astronomers worldwide are closely monitoring 3I/ATLAS, a mysterious interstellar object that has shown a sudden increase in speed and a dramatic change in colour.