New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

The orbit of Ammonite (red line) and the orbits of the other three sednoids (white lines). Ammonite was discovered close to its perihelion, at a distance of 71 astronomical units (71 times the average ...

Georges River families, schools and science enthusiasts to take part in Solar Explorer, a large-scale, self-guided activity ...

Ever since the International Astronomical Union recognized Haumea and Makemake as dwarf planets in 2008, University of Maine ...

At these distances, the satellites remain within Earth’s protective magnetic shield and can reliably measure the planet’s ...

From there, planets have been placed at accurately scaled distances across Georges River, giving participants a real sense of just how vast the solar system is. Each stop includes signage, clues and ...

In a rare celestial event, the Earth will witness the longest total solar eclipse of the century on August 2, 2027, plunging ...

Scientists have been wondering for years whether there is a ninth planet in our solar system. Now, a study by Japanese scientists seems to bust that belief. They have found an object orbiting the Sun ...