We've known for over 30 years that there are other stellar systems in our galaxy, but we don't have any idea how many there ...

A new ultra-thin lightsail design could cut interstellar travel time by centuries, say scientists from Brown and TU Delft.

In a potential step toward sending small spacecraft to the stars, researchers have developed an ultra-thin, ultra-reflective ...

Alpha Centauri, the nearest star system to the sun, is probably shedding comets and asteroids into our solar system — and even producing a few meteors in our sky. Located just 4.3 light-years ...

What can Venus-like exoplanets, also known as exoVenuses, teach us about our own solar system and potentially finding life ...

"These objects really could be anywhere in the solar system at any given time." One million alien visitors from another star system could already be lurking in the solar system. We aren't talking ...

Astronomers have identified a quartet of small rocky planets orbiting Barnard's star - one of our closest stellar neighbors - ...

"The universe is filled with a range of three-body systems, including the closest stars to Earth, the Alpha Centauri star system, and we're finding that the Kuiper Belt may be no exception!" ...

At 5.97 light-years from Earth, it is the fourth-closest star to our solar system, after the three interconnected stars of ...

Interstellar material has been discovered in our solar system, but researchers continue to hunt for where it came from and how it got here. A new study led by Western astrophysicists Cole Gregg ...

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray ...