For decades, we believed there were nine planets in our solar system—until Pluto was reclassified in 2006. But what if ...

NASA said the system is thought to be moving at least 1.2 million miler per hour, nearly twice as fast as our solar system.

The zodiacal light shines in the evening as the Moon reaches Last Quarter and skims past Spica and Antares in the sky this ...

Scientists say the threat of a newly discovered asteroid has risen slightly in the past few weeks as the world's telescopes ...

An asteroid becomes a meteorite when it travels to Earth from a nearby orbit or the outer solar system and collides with ...

Predictions are uncertain, but the solar system may be pushed farther from the galactic core or even ejected entirely from the new galaxy.

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

ALIENS could discover humans on Earth by spotting one of 12 signs, scientists say. Topping the list is a clue that could be ...

Finding this organic material on Benu means that the building blocks of life could have come from an asteroid, and in our ...

When I was a kid, there were nine planets. Now we know of thousands! But that includes exoplanets, alien worlds that orbit alien suns. Only eight planets call our solar system home. Or there might ...