Astronomy
Aug 7, 2015
Stealing Sedna
Turns out, our seemly placid star had a criminal youth of cosmic proportions.
Search results for Sedna
Space Exploration
Feb 20, 2015
A recipe for returning Pluto to full planethood
A storm is brewing, a battle of words and a war of the worlds. The Earth is not at risk. It is mostly a civil dispute, but it has the potential to influence the path of careers. In 2014, a Harvard led debate was undertaken ...
Space Exploration
Feb 10, 2015
Dark Energy Camera unveils small objects in solar system
The 570-megapixel Dark Energy Camera, built at DOE's Fermilab and mounted on the 4-meter Victor Blanco Telescope in Chile, delivers some of the most detailed images of celestial objects. While about a third of the camera's ...
Astronomy
Mar 26, 2014
A new object at the edge of our Solar System discovered
The Solar System has a new most-distant member, bringing its outer frontier into focus.
Astronomy
Mar 11, 2010
Getting WISE About Nemesis
Is our Sun part of a binary star system? An unseen companion star, nicknamed 'Nemesis,' may be sending comets towards Earth. If Nemesis exists, NASA's new WISE telescope should be able to spot it.
Apr 24, 2006
Evidence mounts for sun's companion star
The Binary Research Institute (BRI) has found that orbital characteristics of the recently discovered planetoid, "Sedna", demonstrate the possibility that our sun might be part of a binary star system. A binary star system ...
Apr 14, 2005
Case of Sedna's Missing Moon Solved
When the distant planetoid Sedna was discovered on the outer edges of our solar system, it posed a puzzle to scientists. Sedna appeared to be spinning very slowly compared to most solar system objects, completing one rotation ...
Jan 24, 2005
Giant Kuiper Belt planetoid Sedna may have formed far beyond Pluto
Recently, astronomers reported the surprising discovery of a very large diameter Kuiper Belt planetoid -- (90377) Sedna -- on a distant, 12,500-year-long, eccentric orbit centered approximately 500 astronomical units from ...
Dec 4, 2004
Did our Sun capture alien worlds?
Close encounter may explain some objects beyond Neptune Computer simulations show a close encounter with a passing star about 4 billion years ago may have given our solar system its abrupt edge and put small, alien worlds ...
