Welcome to Astronomy & Telescope Astronomy



· Home
· AvantGo
· Content
· Downloads
· Encyclopedia
· 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, 6 guest(s) and 0 member(s) that are online.

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




Select Interface Language:


  Random Headlines

Planet Observation
[ Planet Observation ]

·Astronomy: Saturn - Cassini-CASSINI AND HIS DISCOVERIES
·Astronomy: Saturn - CAPTURING SATURN
·Astronomy: Saturn
·Astronomy: Pluto - SEEING PLUTO
·Astronomy: Pluto - A MOON FOR PLUTO
·Astronomy: Pluto - Kuiper Belt-VISITOR FROM THE KUIPER BELT
·Astronomy: Pluto - Atmosphere-A LAYER OF GAS
·Astronomy: Pluto
·Astronomy: Planet Observation - ROCKS AND GAS

  Space Shuttle: Astronomy: Space Shuttle - THE CHALLENGER DISASTER
Posted on Tuesday, December 07 @ 13:56:18 CST by astronomy
  Space Shuttle


Supposed to be a day of "firsts" for the space shuttle, 28 January 1986 is, instead, one of the American space program's darkest. Challenger lifted off with seven crew members, including its first civilian, Christa McAuliffe, a schoolteacher. Less than two minutes into the flight, the huge external tank exploded. The two solid rocket boosters went spiraling away from the blast, and Challenger broke into pieces. Minutes later, its cabin and crew fell into the sea.

A team of scientists and engineers determined that because of the extremely cold weather (the temperature had dipped below freezing the night before), a rubber O-ring seal in one of the solid
rocket boosters was less pliable than it should have been. Instead, of expanding to fill the joint in the booster, it remained stiff. Hot gases ruptured the joint and flames shot out, igniting the thin-skinned external tank, which was filled with liquid, oxygen and liquid hydrogen.

Engineers labored for two years, not only to redesign the joints of the boosters, but to rethink all critical items that went into a shuttle launch. By the time Discovery lifted off on 29 September 1988, safety was the number-one priority, making the shuttle a reliable, but complex and expensive way into orbit.




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 Space Shuttle
· News by astronomy

Most read story about Space Shuttle:
Astronomy: Space Shuttle - SHUTTLES AND STATIONS


  Article Rating

Average Score: 0
Votes: 0

Please take a second and vote for this article:

Very Good



 Printer Friendly Printer Friendly

 Send to a Friend Send to a Friend


Associated Topics

Space Shuttle

"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