Re: Searching for Theia, the mother of the Moon
- From: BradGuth <bradguth@xxxxxxxxx>
- Date: Fri, 29 May 2009 22:55:58 -0700 (PDT)
On Apr 11, 9:23 am, Yousuf Khan <bbb...@xxxxxxxxx> wrote:
The current preferred theory about how the Moon was formed is that early
on in the solar system, an object the size of Mars, located nearly at
the same distance from Sun as the Earth is now, impacted the Earth. It
is believed that it was located at one of the Lagrangian points, L4 or
L5 of the Earth, and then eventually spun in and hit it. The ejected
material then became the Moon.
There are currently two spacecraft being sent to both of these
locations, called STEREO. Their main mission is to observe the Sun from
both sides, and provide stereoscopic pictures of stuff coming off the
Sun (flares, CME's, etc.) heading towards Earth and other places. Since
they will be parked at the same L4 & L5 Lagrangian points where it's
believed Theia came from, they may also provide clues as to whether
Theia actually existed.
NASA - STEREO Missionhttp://www.nasa.gov/mission_pages/stereo/main/index.html
More about the Theia hypothesis:
Tom’s Astronomy Blog » Blog Archive » Hunting for Theiahttp://tomsastroblog.com/?p=3271
iTWire - The Theia hypothesis goes STEREOhttp://www.itwire.com/content/view/24366/1066/
NASA - STEREO Hunts for Remains of an Ancient Planet near Earthhttp://science.nasa.gov/headlines/y2009/09apr_theia.htm?list970856
Yousuf Khan
Selene was Theia. Of course you don't get it.
~ BG
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