GALAXY
GRAVITY
COSMOLOGY
COSMOS
A LARGE SYSTEM OF STARS, GAS, AND DUST.
THAT'S ANOTHER NAME FOR UNIVERSE.
SOLAR SYSTEM
RADIO TELESCOPE
THE BRANCH OF SCIENCE THAT STUDIES THE UNIVERSE AS A WHOLE.
AN INVISIBLE FORCE THAT PULLS YOU BACK TO THE EARTH.
AN OPTICAL INSTRUMENT WITH LENSES
SPUTNIK
DWARF PLANET
1949