FUSE finds evidence of swarm of comets around young star
Posted: Thu, Aug 16, 2001, 11:02 AM ET (1502 GMT)
A nearby young star may be surrounded by millions of comets, astronomers announced this week. In a paper published in Thursday's issue of the journal Nature, American and French scientists released evidence from NASA's Far Ultraviolet Spectroscopic Explorer (FUSE) spacecraft that indicates the star Beta Pictoris may have a cloud of comets analogous to our solar system's Kuiper Belt. That conclusion came after astronomers were unable to detect the absorption of ultraviolet light by molecular hydrogen in the gas and dust cloud that surrounds the star. That hydrogen may instead be locked up in comets in the form of water ice, along with other compounds, like carbon monoxide. Previous observations of Beta Pictoris by other spacecraft had detected evidence for molecular hydrogen; the new results suggest the hydrogen may not be evenly distributed but instead concentrated in "clumps" that could be left over from failed protoplanets.
A nearby young star may be surrounded by millions of comets, astronomers announced this week. In a paper published in Thursday's issue of the journal Nature, American and French scientists released evidence from NASA's Far Ultraviolet Spectroscopic Explorer (FUSE) spacecraft that indicates the star Beta Pictoris may have a cloud of comets analogous to our solar system's Kuiper Belt. That conclusion came after astronomers were unable to detect the absorption of ultraviolet light by molecular hydrogen in the gas and dust cloud that surrounds the star. That hydrogen may instead be locked up in comets in the form of water ice, along with other compounds, like carbon monoxide. Previous observations of Beta Pictoris by other spacecraft had detected evidence for molecular hydrogen; the new results suggest the hydrogen may not be evenly distributed but instead concentrated in "clumps" that could be left over from failed protoplanets.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
|
|
news links
|
|
Saturday, September 13
SpaceX, Northrop Grumman to launch supplies to ISS
Spectrum News — 5:52 am ET (0952 GMT) Cornell-led space tech startup acquired by Pasteur Labs
Cornell Univ. — 5:51 am ET (0951 GMT) How China Is Transforming Space Power
The Diplomat — 5:46 am ET (0946 GMT) Two billionaires have very different — and equally wild — visions of a future in space. Is either possible?
CNN — 5:43 am ET (0943 GMT) Rare photos show 'deeply personal' moments in space
BBC — 5:36 am ET (0936 GMT) |
