Sedna (minor-planet designation: 90377 Sedna) is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun far beyond the orbit of Neptune. It was discovered in 2003, and is roughly …

Sedna is drifting into a part of its path where human technology can finally contemplate catching up, and that window will not reopen for roughly the span of recorded civilization. Its 11,400 year ...

Jun 30, 2025 · Scientists are looking at two breakthrough propulsion technologies that might let us reach Sedna, an icy, reddish dwarf planet far beyond the orbit of Pluto, before it slips away into deep space …

Dec 15, 2025 · Sedna, small body in the outer solar system that may be the first discovered object from the Oort cloud. Sedna was discovered in 2003 by a team of American astronomers at Palomar …

Jun 14, 2023 · Sedna, named for the Inuit goddess of the deep sea, is the most distant object known to orbit the sun and is three times farther from Earth than Pluto.

Nov 14, 2003 · Sedna is a minor planet, or planetoid, that lies beyond the Kuiper Belt. Its home reaches to the far edges of the solar system, making it one of the most distant space bodies ever identified.

Sedna is one of the transneptunian objects that orbit the sun beyond Neptune in an extremely cold area of the solar system. Scientists believe that it originated from the early solar system.