Inner Planets
Which planet is the closest to the sun?
Mercury
Which outer planet is the farthest planet from the Sun?
Neptune
What is the name of the galaxy where our Solar System belongs?
Milky Way
What vehicle is used to travel into space?
Rocket
He explained gravity, the force that keeps planets orbiting the Sun.
Isaac Newton
Which planet is known as the Evening Star or Morning Star?
Venus
What do you call the storm visible from Jupiter which is actually bigger than Earth?
Great Red Spot
What is the natural satellite of Earth?
Moon
What organization in the United States is responsible for space exploration?
NASA
He improved the telescope and discovered moons orbiting Jupiter, proving that not everything revolves around Earth.
Galileo Galilei
Which inner planet is the biggest?
Earth
Uranus rotates on its side because its axis is tilted about _______degrees.
98
What is a space object made of ice, dust, and gas that forms a tail when near the Sun?
Comet
Who is the first person to walk on the Moon?
Neil Armstrong
He proposed the heliocentric model, explaining that the Sun is at the center of the Solar System, not Earth.
Nicolaus Copernicus
How long does Mercury take to rotate once on its axis?
59 Earth days
Neptune has a large storm called what?
Great Dark Spot
What do we call the region between Mars and Jupiter where many asteroids are found?
Asteroid Belt
What was the name of the first spacecraft that landed humans on the Moon?
Apollo 11
He discovered the laws of planetary motion, explaining how planets move around the Sun.
Johannes Kepler
Mars has two small moons, one of them is Phobos and the other one is ________.
Deimos
What is the name of the very large moon on Saturn?
Titan
What is the region beyond Neptune filled with icy objects and dwarf planets?
Kuiper Belt
What telescope in space takes clear pictures of galaxies and stars?
Hubble Space Telescope
He discovered Pluto in 1930.
Clyde Tombaugh