In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that one trip around the Sun takes more than 11,000 years. For much of that time ...

Scientists think there may be a ninth planet hiding in the distant reaches of the solar system — and a new telescope could finally prove its existence. | Credit: Nicholas Forder for Live Science Deep ...

In a groundbreaking study recently published on the arXiv preprint server, researchers have proposed two innovative propulsion technologies that could enable humanity to reach the enigmatic world of ...

An artist's conception of the view from the dwarf planet Sedna. David Gerdes of the University of Michigan says the surface of 2014 UZ224 would look much the same. Scientists in Michigan have found a ...

January 5, 2005, is an astronomical anniversary that is not really marked but should be. It saw the discovery of dwarf planet Eris and how those very observations led to a new way to describe the ...

Carnegie’s Scott Sheppard and his colleagues — Northern Arizona University’s Chad Trujillo, and the University of Hawaii’s David Tholen — are once again redefining our solar system’s edge. They ...