http://mars.jpl.nasa.gov. National Aeronautics and. Space Administration. Jet Propulsion Laboratory. California Institut
&
E A R T H
M
A
.
S
D
BOTH EARTH
AND
MARS
HAVE CANYONS,
VALLEYS, CRATERS,
VOLCANOES, ICE
CAPS, STORMS,
AND SEASONS.
MARS
IS HALF
THE DIAMETER
OF
EARTH, BUT
BOTH PLANETS
HAVE THE SAME
AMOUNT OF DRY
LAND.
EARTH’S
ATMOSPHERE IS
77%
NITROGEN
AND
21% OXY
GEN. MARS’ AT
MOSPHERE IS
95%
CARBON DIOXIDE.
MARS
HAS FOUR
SEASONS, JUST
LIKE
EARTH, BUT
EACH ONE LASTS
TWICE AS LONG.
EXPLORE MARS http://mars.jpl.nasa.gov
National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California JPL 400-935 3/01/01 EW-2001-02-009-JPL