Welcome to Astronomy & Telescope Astronomy

 
 

  Modules

· Home
· AvantGo
· Content
· Downloads
· Encyclopedia
· FAQ
· Feedback
· Forums
· Journal
· Members List
· Private Messages
· Recommend Us
· Reviews
· Search
· Statistics
· Stories Archive
· Submit News
· Surveys
· Top 10
· Topics
· Web Links
· Your Account
 

  Who's Online

There are currently, 7 guest(s) and 0 member(s) that are online.

You are Anonymous user. You can register for free by clicking here
 

  Search



 

  Languages

Select Interface Language:

 

  Random Headlines


Astronomy
[ Astronomy ]

 

 
  Telescope: Astronomy: Telescope - HST-WHAT HST HAS SEEN
Posted on Friday, December 10 @ 19:03:36 CST by astronomy
 
 
  Telescope

WHAT HST HAS SEEN

As of 1997, HST has looked at more than 10,000 objects and made more than 100,000 exposures, yielded significant insights into the formation of stars and stellar disks, disclosed important evidence for the existence of black holes in galaxies and quasars, increased our knowledge of the size and age of the universe, and detected galaxies that formed a billion years after the Big Bang.



Its high-resolution images of Mars, Jupiter, Saturn, and Neptune are yielding details surpassed only by space-probe photographs. The world was astonished by the spectacular images it produced in July 1994 when 21 fragments of the comet Shoemaker-Levy 9 collided with Jupiter.

HST images of star-forming regions have shown nascent stars embedded in globules of dust and gas called EGGS (evaporating gaseous globules). In the Great Nebula in Orion, dusty disks visible around protostars have been interpreted as solar systems in the making. At the other end of stellar evolution, HST has produced a stunning image of Eta Carinae, a star/ nebula system 8,000 light-years away. This is expected to explode one day as a supernova.

We can now see great disks of matter swirling around supermassive black holes at the centers of galaxies and quasars, as well as structural details in the spiral arms of nearby galaxies. Looking at the most remote corners of the universe, a 10-day series of HST exposures revealed an assemblage of galaxies of various sizes completely filling a single speck of sky in Ursa Major. Many of these may date back almost to the beginning of the universe.

The HST has established itself in astronomical history and will no doubt continue to make dramatic observations and discoveries. Nevertheless, astronomers are already planning a more powerful Next Generation Space Telescope. This will be able to look in even greater detail at a period in the universe when the primordial seeds of the galaxies began to evolve—just a few million years after the Big Bang. Astronomers long to study this epoch because it may help explain the origin and fate of the universe.

The new telescope would be much more sensitive than, any existing telescope. The 240 to 320 inch (6 to 8 m) mirror would soak up light from remote proto-galaxies as well as study nearby objects in the universe. With this new technology, we may finally be able to address such burning questions as: How did galaxies form? and, What were the first generations of stars like?

 
 
  Login

Nickname

Password

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.
 

  Related Links

· More about Telescope
· News by astronomy


Most read story about Telescope:
Astronomy: Telescope - HST-WHAT HST HAS SEEN

 

  Article Rating

Average Score: 0
Votes: 0

Please take a second and vote for this article:

Excellent
Very Good
Good
Regular
Bad

 

  Options


 Printer Friendly Printer Friendly

 Send to a Friend Send to a Friend

 

 
 
Associated Topics

Telescope
 
 


 
 
"Login" | Login/Create an Account | 0 comments
The comments are owned by the poster. We aren't responsible for their content.
 
 


 
 
No Comments Allowed for Anonymous, please register
 
 


 
  Astronomy & Telescope Astronomy

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest © 2004 by Astronomy & Telescope Astronomy
You can syndicate our news using the file backend.php or ultramode.txt