Last year, an interstellar traveler entered our solar system. Some speculated that it was an alien spacecraft, but it turned ...

A nearby 'super‑Earth' just 25 light years from our solar system has been recategorised as a lighter, likely rocky world ...

Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets ...

Some of the coldest objects currently listed as stars in the Milky Way may not be stars at all. A new study by astrophysicist ...

A strange class of comet could explain the enigmatic behavior of ‘Oumuamua, the first known interstellar object—and even shed ...

A planet with one side permanently roasting and the other frozen in endless darkness might still have a chance of supporting life. Researchers found that heat inside a tidally locked exoplanet could ...

Professor Avi Loeb gained prominence in 2017 after the discovery of ‘Oumuamua, the first known interstellar object to pass ...

Scientists studying interstellar comet 3I/ATLAS say its unusual chemical fingerprints suggest it formed around an ancient ...

Get the latest federal technology news delivered to your inbox. You might think this column is about UFOs and the Pentagon's ...

For almost a decade—ever since 2017, when our first known interstellar visitor, 1I/‘Oumuamua, swooped through the inner solar ...

Tau is in sight.

Director Steven Spielberg claimed aliens have already visited planet Earth – and now scientists said he may be on the money, ...