craters
Moon's pockmarked face
Craters is the plural of crater—a bowl-shaped depression, typically formed by impact or explosion.
The moon's surface is covered with craters from meteorite strikes.
Volcanic craters form at eruption sites.
Bomb craters scar battlefields.
As a verb, craters means to collapse or fail dramatically: The stock price cratered after the earnings report.
Space debris reaching Earth
- asteroidSun-orbiting rocky mass
- collisionForceful contact between objects
- shockwavePropagating pressure disturbance
- ejectaMaterial forcibly discharged
debris · bolide · extinction · cataclysm · blast · trajectory · velocity · fragmentation
Natural planetary satellite
- mareFemale adult equine
- regolithFragmented covering over bedrock
- highlandsElevated, hilly land areas
- terminatorOne who ends things
selenology · moonscape · farside · nearside · albedo
Collapsed volcanic summit basin
- magmaMolten rock underground
- eruptionViolent sudden release
- ventOpening for airflow
- fumaroleVolcanic gas vent
lava · pumice · ash · stratovolcano · sulfur · geothermal · hotspot · collapse
Circular outer boundary
- floorIndoor walking surface
- peakUtmost height attained
- wallVertical enclosing structure
- terracePaved outdoor extension
ray · bowl-shaped · complex · simple · basin · diameter · depth · circularity
Atmospheric breakdown of materials
- degradationDecline in condition
- infillMaterial closing gaps
- sedimentParticles settling in liquid
- slumpingDeclining sharply, drooping
degraded · ancient · buried · palimpsest · faded
Glowing atmospheric space rock
- cometIcy orbiting body
- chondriteMeteorite containing round grains
- micrometeoriteMinute extraterrestrial surface grain
- fireballLuminous meteor or explosion
cosmic · interplanetary · ablation · streak
meteorite
Space debris reaching Earth
- asteroidSun-orbiting rocky mass
- collisionForceful contact between objects
- shockwavePropagating pressure disturbance
ejecta · debris · bolide · extinction · cataclysm · blast · trajectory · velocity · fragmentation · kinetic
moon
Natural planetary satellite
terminator · selenology · moonscape · farside · nearside · albedo
caldera
Collapsed volcanic summit basin
fumarole · lava · pumice · ash · stratovolcano · sulfur · geothermal · hotspot · collapse · dormant
rim
Circular outer boundary
terrace · ray · bowl-shaped · complex · simple · basin · diameter · depth · circularity
weathering
Atmospheric breakdown of materials
- degradationDecline in condition
- infillMaterial closing gaps
- sedimentParticles settling in liquid
meteor
Glowing atmospheric space rock
- cometIcy orbiting body
- chondriteMeteorite containing round grains
- micrometeoriteMinute extraterrestrial surface grain
fireball · cosmic · interplanetary · ablation · streak
mercury
Liquid metallic element
- marsTo impair quality
- galeSevere sustained wind
- spacecraftVehicle for outer space
- volcanicslava, magma, volcanoes, eruptions, lava flows
- Moon thingsfull moon, new moon, moonlight, lunar eclipse, moon phases
- Hawaiian VolcanoesKilauea, Mauna Loa, Haleakala, volcano, volcanoes
- Inner Planetssurface, atmosphere, orbit, core, mantle
- Mars geologyregolith, iron oxide, red dust, perchlorates, basalt
- Mars studyMars, red planet, surface features, canals, polar caps
cratersplains
Broad, level grasslands
smooth surface · smooth surfaces · flat terrain · level ground · flatlands
- lunar cratersImpact formations on moon
- bomb craterPit from detonation
- crater lakeWater in volcanic hollow
- smoking crater
- volcanic craterDepression from eruption
- impact craterMeteorite collision depression