Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A ...

Astronomers manning an asteroid warning system caught a glimpse of a large, bright object zipping through the solar system ...

This new dwarf planet may exist at the edge of the solar system, possibly disproving Planet Nine's existence. This is the story of that newly encountered planet.

This shift to wind and solar power will eliminate more than 17,000 metric tons of CO₂ emissions per year, reinforcing our commitment to clean energy solutions and sustainability.

Planets may begin forming much earlier than scientists once believed during the final stages of a star s birth, not afterward. This bold new model, backed by simulations from researchers at SwRI ...

Is there a possible ninth planet in our solar system? Researchers say they may have found a candidate (Credit: ESO/Tom Ruen/nagualdesign) But, the announcement has been met with some skepticism.

Our solar system is a particularly crowded place. Millions of objects move within it, whether they are planets, moons, comets, or asteroids. And every year, we discover more and more objects ...

If the solar system does have a Planet Nine, it is a world that was bullied by its larger siblings, exiled to the far reaches of space and only rescued from oblivion thanks to the intervention of ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why Pluto isn't a planet.

Is our Solar System fated to have just eight planets? Not necessarily. There may be another one waiting to be found.