A ball of ice 100 kilometres across is the most widely travelled member of
the Solar System. The object, 1999 CF119, was spotted by astronomers at the
University of Hawaii. Its path has now been calculated by Brian Marsden of the
Harvard-Smithsonian Center for Astrophysics in Massachusetts, who says it takes
1200 years to complete an orbit that takes it 30 billion kilometres from the
Sun. The only objects with more distant orbits are the long period comets, which
are not regarded as members of the Solar System.
More from ¿ìè¶ÌÊÓƵ
Explore the latest news, articles and features
Popular articles
Trending ¿ìè¶ÌÊÓƵ articles
1
Pancreatic cancer halted by virus injection in three patients
2
The best new science-fiction books of June 2026
3
Glaciers in the 'roof of the world' have suddenly started melting
4
Q-Day could destroy bitcoin – and our retirement savings
5
Photons behave very strangely if you try to cut them
6
Embryos made without sperm or eggs reveal why many pregnancies fail
7
Does gravity create reality? A shocking path to a theory of everything
8
Unpicking the genetics of fibromyalgia sheds new light on its causes
9
Where did the laws of physics come from? I think I've found the answer
10
The ‘doomsday’ glacier’s giant ice shelf is about to break away
