trustle > EngliSea > A > astronomy > solar system
 solar system
 dwarf planets
Ceres, Pluto, Eris, Haumea and Makemake
 geocentric to heliocentric
If you were to go outside tonight and look at the night sky, you would observe stars and planets and the moon.
 geocentric to heliocentric
Galileo was famous for demonstrating that the light and heavy objects fall at exactly the same speed unless an object is so light that it is slowed by the air. -- Ptholemy, Nocolaus Copernicus, Galileo, Johannes Kepler
 Phases of the Moon: Astronomy and Space for Kids - FreeSchool
 Planet Nine
Has a Ninth Planet Been Discovered in Our Solar System?
 solar system
<Free School> Have you ever looked up into the sky and wandered what was there? Higher than the birds, past the clouds and farther than the moon, a whole host of fascinating objects spin in outer space.
 solar system
 solar system
<National Geography> Terrestrial, jovian, asteroid, Ceres, debris, kuiper belt, oort cloud, celestial
Sun 101 | National Geographic