The Solar System is home to a remarkable range of planets, from tiny rocky worlds to massive gas giants. But just how big are these planets really? To put it into perspective, we can run some ...

Using NASA's planet-hunting spacecraft TESS (Transiting Exoplanet Survey Satellite), astronomers have discovered three ...

On September 3, 2025, an asteroid the size of a commercial jet will pass Earth at an incredibly close distance, sparking excitement among astronomers and space enthusiasts alike. Known as 2025 QD8, ...

The asteroid known as 2024 YR4 is out of sight yet still very much on scientists’ minds. The building-sized object, which initially appeared to be on a potential collision course with Earth, is ...

A recently discovered asteroid roughly the size of a commercial jet will pass within 1 lunar distance of Earth on Sept. 3. Here's how you can watch the build-up to the flyby live online, courtesy of ...

A massive asteroid nearly the size of a New York skyscraper will make a close approach, or pass, by Earth in the early hours of Sept. 18, according to scientists. They say the asteroid, officially ...

A potentially hazardous asteroid spanning the length of the Washington Monument will make a safe, close approach to Earth on Sept. 18 and you can watch the flyby live online courtesy of the Virtual ...

Earth has a new cosmic companion, a small object designated 2025 PN7, now classified as a quasi-satellite. This 'second moon' ...