Our Moon
How long does it take the Moon to orbit Earth?
Which planet is often called Earth's "sister planet" because of its similar size?
What galaxy contains our solar system?
What was the name of the first artificial satellite launched into space in 1957?
What is a black hole?
Which was the first country to land people on the Moon?
Which two planets are known as the "gas giants"?
What is the name of the galaxy nearest to the Milky Way that can be seen without a telescope?
Which space telescope was launched in 2021 and can see farther into space than Hubble?
What is the name of the dwarf planet once considered the ninth planet?
In what year did humans first walk on the Moon?
Which planet has the largest volcano in the solar system?
What color are the hottest stars?
Who was the first American in space?
Which planet has the shortest year because it travels around the Sun the fastest?
D. Mercury
What is the dark, flat area seen on the Moon called?
Which planet takes about 29 Earth years to orbit the Sun?
Our Sun is classified as what type of star?
Which spacecraft became the first human-made object to enter interstellar space?
What is the closest planet to Earth most of the time?
How many astronauts have walked on the Moon?
Which planet spins on its side and has the fastest winds recorded anywhere in our solar system?
What is the name of the event that marks the death of a massive star?
What was the name of the first U.S. space station?
What two planets is the asteroid belt located between?