Astronomers have made an exciting discovery—a new Earth-like exoplanet, Proxima b, located in the Alpha Centauri system. This ...

Proxima Centauri, just 4.24 light-years from Earth, is the closest known star to our Sun. Though it’s the smallest member of ...

Answer 17: A meteoroid is a small rocky or metallic body in space. A meteor is the streak of light produced when a meteoroid enters Earth’s atmosphere. A meteorite is a meteoroid that survives passage ...

The hunt for potentially habitable rocky planets in our galaxy has been the holy grail of exoplanet studies for decades.

Aliens could spot Earth because of airports such as Heathrow and Gatwick, according to new research. Radar systems used by ...

Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a ...

Humans might not know of any intelligent beings beyond Earth, but if they exist, they might already know about us. New ...

Astronomers have discovered yet another alien visitor to the Solar System.

NASA’s New Horizons probe, which hurtled past Pluto in 2015, demonstrates that it can sail through interstellar space using ...

Astronomers have discovered yet another alien visitor to the Solar System. This one appears to be a comet, a ball of dust, ice and various volatile materials. It is rapidly ...

A new study reveals that a common human technology may be quietly broadcasting our presence to alien civilizations—without us ...

This careful approach allows us to address our domestic cattle shortage while upholding our highest duty: protecting the health of the U.S. herd.