 Astronomy:
The scientific study of the Galaxies, Stars,
Nebulae, Solar Systems and the Universe. It deals
with a celestial objects relationship to the Earth,
size, position, composition, motion, evolution and
energy. Astronomers use telescopes, satellites,
computers, space stations and observatories to study
the universe.
Planets:
Celestial bodies that circles a star and does not
emit its own light. |
