#1
|
|||
|
|||
Life to Mars
I can see how it is easy to send material from Mars to Earth with
meteoric impacts. But how probable is it that material from Earth has been ejected to Mars? And what is the probable tonnage during what ages? Thanks, Rick |
#2
|
|||
|
|||
In article ,
Rick Nelson wrote: I can see how it is easy to send material from Mars to Earth with meteoric impacts. But how probable is it that material from Earth has been ejected to Mars? Unlikely in recent times. Earth's strong gravity and thick atmosphere make it much more difficult for impacts to get rocks off Earth; probably it was possible only in the early days of the solar system, when really huge impacts were common. -- "Think outside the box -- the box isn't our friend." | Henry Spencer -- George Herbert | |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Breakthrough in Cosmology | Kazmer Ujvarosy | SETI | 8 | May 26th 04 04:45 PM |
Breakthrough in Cosmology | Kazmer Ujvarosy | History | 2 | May 22nd 04 02:06 AM |
Breakthrough in Cosmology | Kazmer Ujvarosy | Space Station | 0 | May 21st 04 08:02 AM |
Space Calendar - January 27, 2004 | Ron | Astronomy Misc | 7 | January 29th 04 09:29 PM |
Space Calendar - June 27, 2003 | Ron Baalke | Misc | 3 | June 28th 03 05:36 PM |