Physics & Astronomy
asteroids
88%
spacecraft
69%
near Earth objects
25%
boom
24%
regolith
24%
landing
23%
pendulums
19%
landing aids
16%
spacecraft control
15%
spacecraft design
13%
ion engines
13%
hovering
13%
posture
12%
seismology
11%
cohesion
10%
relay
10%
reaction time
10%
capsules
9%
microgravity
9%
solar system
8%
high strength
8%
xenon
8%
vehicles
8%
resources
8%
communication
7%
hardness
6%
physical properties
6%
moments
6%
sensors
5%
Earth & Environmental Sciences
asteroid
81%
spacecraft
70%
science
50%
regolith
19%
bus
18%
OSIRIS
13%
xenon
10%
posture
10%
seismology
9%
solar system
8%
cohesion
8%
expenditure
8%
defense
8%
engine
7%
hardness
7%
material
6%
vehicle
6%
physical property
6%
communication
6%
gravity
6%
sensor
5%
ion
5%
resource
4%
analysis
2%
Engineering & Materials Science
Asteroids
100%
Spacecraft
68%
Pendulums
17%
Landing
17%
Earth (planet)
14%
Ion engines
14%
Seismology
13%
Xenon
11%
Small satellites
10%
Solar system
9%
Physical properties
7%
Gravitation
7%
Hardness
6%
Chemical analysis
5%
Uncertainty
5%
Sensors
4%
Communication
4%