INCOMING!: метеорита в Челябинске, Russian Meteor - February 2013 |
INCOMING!: метеорита в Челябинске, Russian Meteor - February 2013 |
Feb 15 2013, 07:01 AM
Post
#1
|
|
Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Looks like a small meteoroid decided to spoil 2012 DA14's big day by exploding over Russia...
http://zyalt.livejournal.com/722930.html?nojs=1 -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
|
|
Feb 18 2013, 10:21 AM
Post
#2
|
|
Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
Rotation helps for larger asteroids of a rubble-pile, gravitationally-bound, construction. Painting an asteroid black would result in the warmed surface emitting IR to a higher degree during the "dusk" side of rotation compared to the "dawn" side. Given time an orbit could be adjusted.
The problem with smaller objects, such as this Russian one - presuming they're solid rock chunks - is that the rotation rate could well be significantly above that of a gravitationally-bound body, reducing the benefit of paint. Rotation. Hmmm. Just a thought to Art and ugordan - do the twin trails seen here reflect the equivalent of "tip vortices" generated by the lift of a rotating body? Andy |
|
|
Lo-Fi Version | Time is now: 23rd September 2024 - 07:06 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |