This object takes up around 30 arcminutes in the sky when it's full.
What is the Moon?
This dwarf planet is the only one found in the asteroid belt. It is also the largest body there.
What is Ceres?
This celestial formative process refers to the gradual accumulation of additional layers of matter.
What is accretion?
A system used by astronomers to divide galaxies into groups based on their visual appearance.
What is galactic morphology or galaxy morphological classification?
Our home, the Milky Way, has many satellite galaxies. Which two descriptively named satellite galaxies of these were discovered in prehistory and are visible from the Southern Hemisphere?
What are the small and large Magellanic clouds?
July of 1969, Apollo 11 carried the first astronauts to walk on the Moon. Where did these astronauts take their first steps?
What is the Sea of Tranquility?