The threat from space rock 2024 YR4 has surpassed that of Apophis, an asteroid feared by scientists 20 years ago. The danger remains low, but experts are estimating the damage that could be done.

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey ...

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

YR4 has a 1-in-43 chance of impacting the Earth in 2032, potentially causing localized damage and potentially wiping out a ...

Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a ...

Hundreds of millions of Americans will have the chance in March to see the first total lunar eclipse in nearly three years.

The chances of an asteroid striking Earth within the next decade has doubled in a matter of weeks, according to NASA astronomers.

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

Make time soon to head outside after the sun sets and study the sky. Five of the brightest planets — Venus, Jupiter, Mars, ...

NASA and European scientists explain how they calculate the probability of the space rock 2024 YR4 impacting our planet, and why it’s not yet time to worry.