Planets
Which planet is the smallest in the solar system?
Mercury
What do astronauts need to breathe while in space?
Oxygen tanks
What is the name of the galaxy we live in?
The Milky Way
What is the name of NASA’s most famous space telescope?
The Hubble Space Telescope.
Which planet has the shortest day and spins the fastest?
Jupiter
Why do astronauts float in space?
What is the name of the giant storm on Jupiter?
The Great Red Spot.
What tool do scientists use to look at distant stars?
A telescope.
Which planet could float in water because it’s so light?
Saturn
What happens to an astronaut’s muscles in zero gravity if they don’t exercise?
They get weaker or shrink.
What are comets mostly made of?
Ice, rocks, and dust.
Why do astronauts use spacesuits?
Air, temperature control, and protection from space.
Which planet has seasons like Earth but they last much longer?
Mars
What human body part changes shape in space due to microgravity?
The spine or body height.
What do we call a group of stars?
A constellation.
What international laboratory orbits Earth and is used for space research?
The International Space Station (ISS)