Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

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.

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

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to ...

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

If planets had social media accounts, the solar system would showcase a frenzy of unique personalities. Mercury tweets at ...

THE search for alien life across our Solar System and beyond has so far kicked up nothing intelligent – let alone microbial. But researchers now believe extraterrestrials could be lurking ...

Filmmaker Adam Nemoy helps celebrate the 90th anniversary of Pluto's discovery this month at the 6th annual 'I Heart Pluto' ...

If the solar system had a corporate structure, Jupiter would be the CEO, while Saturn ensures rules are followed. Venus ...