Here's a list of words to help with space topics and themes.
Aliens
Andromeda
Asteroid
Asteroid Belt
Astronaut
Astronomer
Astronomy
Atmosphere
Aurora Borealis
Black Hole
Callisto
Comet
Constellation
Core
Cosmonaut
Crater
Dark
Density
Discovery
Dust
Earth
Eclipse
Energy
Europa
European Space Agency
Exploration
Extra Terrestrial
Galaxy
Galileo
Ganymede
Gas
Gas Cloud
Gravitational Fields
Gravitational Pull
Gravity
Hale-Bopp Comet
Halley's Comet
Hubble Telescope
Ice
International Space Station
Io
Jupiter
Kuiper Belt
Leonid Showers
Light
Light Year
Lunar
Magnetic Field
Mars
Martian
Mass
Mercury
Meteor
Meteorite
Metoer Shower
Microgravity
Milky Way
Mir
NASA
Nebula
North Star
Northern Lights
Nuclear
Nucleus
Observatory
Omega
Orbit
Orion
Pandora
Particles
Planet
Plantariun
Pluto
Prometheus
Quasar
Radiation
Red Dwarf
Red Planet
Rings
Rock
Rocket
Rotation
Rover
Satellite
Saturn
Sedan
Shepherd Moons
Shooting Star
Shuttle
Sky
Solar Flare
Solar System
Solar Winds
Space Walk
Spacecraft
Spiral
Star
Stratosphere
Supernova
Tail
Telescope
Temple-Tuttle Comets
Terraforming
Terrestrial
The Bear
The Moon
The Sun
UFOs
Universe
Uranus
Ursa Major
Ursa Minor
Vacuum
Venus
Volcanoes
White Dwarf
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space themed story book titles and on amazon a
planet mobile, twinkle twinkle little star
The Magic sky Aurora Borealis or Northern lights