The formation of our Solar System leaves a lot of unanswered questions, but as we continue to study it in more detail with the countless spacecraft and telescopes we have in space today, we also ...

Next year, in July 2015, the New Horizons probe will zip past Pluto at high speed, taking high-res images and detailed observations the whole time. We’ve never seen the ice ball up close before, so ...

Pluto's status as our solar system's ninth planet may be safe if a recently discovered Kuiper Belt Object is a typical "KBO" and not just an oddball. Astronomers have new evidence that KBOs (Kuiper ...

The Kuiper Belt is a collection of small, icy bodies that orbit the sun beyond Neptune, at distances larger than 30 AU (one astronomical unit or AU is the distance between the Earth and the sun).

If you travel far enough away from the Sun, the Solar System becomes a lot more populated. Out past the orbit of Neptune lies the Kuiper Belt, a vast, ring-shaped field of icy rocks. This is where ...

A Mars-sized planet appears to be lurking at the edge of the solar system, scientists have announced. The "planetary mass object" seems to be disrupting the orbits of other, smaller rocky bodies ...

NASA's Hubble Space Telescope has uncovered three Kuiper Belt objects that the agency's New Horizons spacecraft could potentially visit after it flies by Pluto in July 2015. Peering out to the dim, ...

While the rest of the world got busy checking out the photos of Starman (SpaceX’s dummy astronaut riding a Tesla roadster to Mars), a NASA space probe went about taking snaps of objects while it was ...

University of Regina provides funding as a member of The Conversation CA-FR. University of Regina provides funding as a member of The Conversation CA. Planet Nine is a theoretical, undiscovered giant ...

In 1992, astronomers David Jewitt and Jane Luu discovered the first Kuiper Belt object (KBO), providing the context for Clyde Tombaugh’s planet Pluto. Scientists soon discovered dozens, then hundreds, ...

Pluto's status as our solar system's ninth planet may be safe if a recently discovered Kuiper Belt Object is a typical "KBO" and not just an oddball. Astronomers have new evidence that ...