With the moon sitting low in the sky during this phase of its 18.6-year cycle, it's the perfect time to try capturing this ...

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

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 ...

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

The annual competition for professional and amateur astrophotographers released its shortlisted images, which capture the ...

Are you a strong and powerful leader like Clark Kent or willing to dive headfirst with passion into any scenario like Lois ...

Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

Sometimes "the universe comes to us," writes the European Space Agency. For the third time since 2017, an interstellar object ...

Sedna, a distant dwarf planet three-quarters the size of Pluto, is inching toward the brightest star in our sky — and in 2076 ...

Antarctica's harsh otherworldly climate gives a glimpse into the simple microscopic communities that dominated Earth for much ...

Some exoplanets in their stars' habitable zones may be distinctly uninhabitable due to solar flaring. Red dwarfs are known for powerful flaring, and since they're dim and their habitable zones are ...