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.

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 ...

Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't achieved gravitational dominance in its region, the International Astronomical ...

At the end of 2024, astronomers detected an asteroid in the night sky. It was given the designation Y, since it was ...

NASA shares an iconic image of carbon dioxide ice erupting in geysers when Martian winter turns to spring.

An international team has confirmed the discovery of a super-Earth orbiting in the habitable zone of a nearby sun-like star.

Beyond the immediate impact damage, an asteroid impact would have long-lasting effects on Earth's atmosphere. What would ...

Keep your eye on the ball” is a motto for many athletes—and for astronomers trying to find Earth-threatening space rocks ...

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.

YR4 has just above a 1% chance of crashing into Earth in 2032, which is why astronomers and space agencies are paying attention to it.

2025 is starting off with a bang for skygazers, with a planet parade now visible in the night sky. A planet parade is when several of our solar system's planets are visible in the night sky at the ...