One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about ...

Visiting our nearest stellar neighbor will take near-light-speed travel. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Our space-exploration ...

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 from ...

The detection of a large interstellar object in 2017 named ‘Oumuamua was a landmark discovery. Figuring out where the wayward traveler came from, though, is another challenge entirely, especially ...

A search was conducted for laser signals, both sub-second pulses and continuous emission, from the regions of the sky opposite Proxima and Alpha Centauri. These regions are located at the foci of the ...

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from the galaxy at this important ultraviolet wavelength, providing a new look at ...

"These objects really could be anywhere in the solar system at any given time." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. One million alien ...