Category:Planetary defense

A

• Alien invasions in fiction‎ (8 C, 19 P)

I

• Impact events‎ (11 C, 11 P)

M

• Missions to asteroids‎ (2 C, 16 P)
• Missions to comets‎ (3 C, 22 P)

N

• Near-Earth object tracking‎ (2 C, 22 P)
• Near-Earth objects‎ (6 C, 7 P)

P

• Planetary defense organizations‎ (7 P)
• Potential impact events caused by near-Earth objects‎ (1 C, 29 P)

• Planetary defense

*

• Alien invasion
• Asteroid impact avoidance

A

• AIDA (international space cooperation)
• Asteroid impact prediction
• Asteroid laser ablation
• Asteroid Redirect Mission

D

• Directed Energy System for Targeting of Asteroids and ExplorRation
• Double Asteroid Redirection Test

G

• Gravity tractor

H

• HAMMER (spacecraft)

I

• Ion-beam shepherd

L

• LICIACube
• List of asteroid close approaches to Earth
• List of Earth-crossing asteroids
• List of predicted asteroid impacts on Earth

N

• NEAR Shoemaker
• Near-Earth Asteroid Scout
• Near-Earth object

O

• OSIRIS-REx

P

• Palermo Technical Impact Hazard Scale
• Potentially hazardous object

S

• Sentinel Space Telescope
• Sentry (monitoring system)

T

• Torino scale