The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've ...

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get ...

Earth is the only planet in our solar system with a single moon, making it a rare phenomenon for a planet of its kind.

On Sept. 21, 2003, NASA's Galileo mission to Jupiter and its moons came to an end. After 14 years of exploration, the Galileo ...

In a cosmic milestone that once seemed straight out of science fiction, astronomers have captured something previously only ...

Summer is officially over September 22, at 2:19 p.m. Time to hang up the surfboard, deflate the beach balls, stow the grill, put away the Hawaiian shirts, and have a good cry. Naturally you're angry.

The sun is in its most active phase—solar summer—causing auroras and posing real risks to satellites, GPS, and power systems ...

Astronomers have taken a huge leap towards discovering habitable worlds, and the world now eagerly anticipates a rocky planet ...

The asteroid named 2025 FA22 was once categorised as potentially hazardous and is said to fly by Earth on September 12.

The fall equinox is a significant event in any tipped planet's life. Seasons are caused by a planet's tilted axis. Those which orbit the sun standing nearly straight up and down with little to no ...

You'll be called to really consider that question as the fall equinox arrives on Sept. 22, and the day and night become nearly equal in length. The spirit-driving sun will also enter gregarious Libra ...

NASA unveiled a new discovery inside our solar system. We had only seen these big lakes filled with water on Earth - but this ...