Show:
Planets
Stars
Phenomena
Space Travel
Moons
100
The closest planet to the Sun.
What is Mercury?
100
The closest star to Earth.
What is the Sun?
100
These icy chunks have far-ranging orbits that can take thousands of years.
What are comets?
100
Columbia, Discovery and Atlantis are some of these.
What are space shuttle names?
100
One of the Moon's phases that seems to make it disappear.
What is a new moon?
200
This planet is famous for its rings.
What is Saturn?
200
A small-sized star, of which our own Sun is an example.
What is a dwarf star?
200
These dead stars trap everything in their ultrastrong gravity, including light.
What are black holes?
200
The destination of the Apollo rockets was this nighttime neighbor, in our own galactic backyard.
What is the Moon?
200
This planetary neighbor has twice number of moons as Earth.
What is Mars?
300
The axis of this gas giant is nearly horizontal.
What is Uranus?
300
Betelgeuse is the most famous example of this type of star.
What is a red giant?
300
Latin for "dawn," this colorful phenomena is often seen at night at either pole.
What is an aurora?
300
The first man to walk on the moon.
Who is Neil Armstrong?
300
The largest moon in the solar system.
What is Ganymede?