Sedna is drifting into a part of its path where human technology can finally contemplate catching up, and that window will ...

Object 90377 Sedna — a distant trans-Neptunian object known best for its highly elliptical, 11,390-year-long orbit — is currently on its way towards perihelion (its closest approach to the Sun) in ...

While new discoveries about Mars continue to make headlines, another “red planet”—known as Sedna (or 90377 Sedna)—is making its way into the inner solar system. At this moment, the crimson-hued dwarf ...

Journey to the farthest reaches of our solar system and uncover the mysteries of Sedna, a reddish dwarf planet that orbits ...

In 2004, astronomers announced the discovery of a red, frigid planet-like body at the outskirts of our solar system. Michael E. Brown, the Caltech astronomer who spotted the object (and who would ...

After years of debate, astronomers worldwide now are planning to settle a question that seems basic to every schoolchild: What is a planet? Prompted by controversy over the status of Sedna — a large ...

More than a decade after an oddball world named Sedna was discovered on the solar system's far frontier, a fresh discovery reveals that it's not so odd after all. Sedna and the newly found object, ...

Astronomers have detected what could be the Solar System's 10th planet. It was first seen by astronomers using California's Palomar Observatory, and has been given the name "Sedna" after the Inuit ...

Mapsof our Solar System may have to be redrawn to include a tenth planet. The object has been named Sedna, after the Inuit goddess of the ocean. It is the largest body orbiting the Sun to be ...