Physics & Astronomy
Columbia (Orbiter)
100%
craters
92%
soils
84%
rocks
77%
physical properties
63%
volcanology
38%
water
38%
plains
30%
sulfur
25%
magnesium sulfates
22%
landing sites
22%
cementation
19%
weathering
19%
veins
17%
crusts
16%
bromine
16%
mars
15%
infiltration
15%
void ratio
15%
chlorine
14%
water vapor
13%
arrivals
13%
stations
13%
magnesium
12%
topography
12%
salts
12%
textures
11%
porosity
9%
saturation
9%
shift
8%
fluids
7%
gases
6%
Earth & Environmental Sciences
crater
77%
physical property
63%
rock
39%
soil
34%
magnesium
28%
sulfur
24%
hydrothermal circulation
21%
soil crust
21%
volcanic gas
21%
water
19%
bromine
19%
void ratio
19%
rock property
17%
cementation
16%
water storage
16%
trench
15%
Mars
15%
chlorine
14%
soil property
14%
water vapor
13%
infiltration
13%
weathering
13%
texture
12%
topography
11%
saturation
11%
porosity
11%
sulfate
11%
salt
11%
fluid
9%
station
9%
Agriculture & Biology
rocks
78%
physical properties
65%
soil
40%
soil composition
36%
water
33%
sulfur
22%
soil crusts
21%
bromine
18%
magnesium sulfate
18%
wet environmental conditions
17%
water storage
16%
weathering
16%
infiltration (hydrology)
15%
topography
14%
chlorine
14%
water activity
13%
water vapor
13%
soil properties
13%
porosity
12%
magnesium
11%
texture
10%
gases
10%
fluids
10%
salts
9%
Chemical Compounds
Soil
68%
Sol
37%
Magnesium Sulfate
18%
Weathering
16%
Time
14%
Crystalline Texture
13%
Water Vapor
12%
Bromine Atom
12%
Chlorine
11%
Magnesium Atom
11%
Flow
8%
Porosity
7%
Environment
7%
Gas
7%
Amount
5%