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 ...

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

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

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

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

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

Our solar system’s planets are set to align in a seven-strong planetary parade this week that will be visible in the UK night ...

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

Our solar system’s planets are set to align in a six-strong planetary parade this week that will be visible in the UK night sky. The celestial event is set to be an extension of the already impressive ...

New research shows that star activity can distort exoplanet measurements, affecting size, temperature, and atmosphere ...