RF
Mars Moon Impact
Astronomers at the University of Zurich believe that Mars; two present satellites, Phobos and Deimos, are the product of an impact early in Mars' history. By tracing their orbits back in time, they estimate that they originated from a single point. This, the scientists say, is evidence that Mars initially had a single, larger moon, which was split in two following a collision with another object., Photo by MARK GARLICK/SCIENCE PHOTO LIBRARY
S
0.3 MB
724 x 485 px
6.1 x 4.1 cm
$ 100.00
M
3.4 MB
2290 x 1534 px
19.4 x 13 cm
$ 180.00
L
16.7 MB
5107 x 3422 px
43.2 x 29 cm
$ 350.00
More
Top Categories