The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

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 ...

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System ... interplanetary ... Dec. 9, 2024 — Dust storms on ...

The moon will then continue its march across the sky and meet with Mars on February 9, but keen ... up at these planets, you’re peering into the vast expanse of our solar system.

one which can offer superb views of the other bodies in the solar system. But which one to choose? We've got you covered with our guide to the best telescopes for seeing planets. Now's a great ...

For many years scientists have been wondering if a mysterious ninth planet lurks in our Solar system. “Planet Nine”, dubbed, has fascinated scientists for its ability to account for “anomalous” ...

The Planet Nine theory was based on several trans-Neptunian ... This seemed odd and illogical as when the Solar system formed, it would be expected that objects that developed in the circumstellar ...

At 9 km per second (which is close to a whopping ... astronomers could measure only the mass and the radius of planets outside the Solar System. Today, telescopes like ESO's VLT already allow ...