What is the original source of energy for Earth?
What is the average temperature for earth
What are the four basic needs for all living things on Earth?
The sun releases dangerous amounts of
What branch of science studies life in the universe?
Venus is not suitable for living organisms because
Growth and reproduction come from
What was the first artificial satellite in space and from what country?
We use what object to overcome gravity and get to outer space?
This unscrewed object retrieves information in space and send the data back to Earth.
The first country to send people to space was...
What does Earth have that space doesn't and protects us from solar radiation?
Astronauts need what to space walk because it provides oxygen and pressure?
Missions that sent astronauts to the moon were a part of what program?
How many astronauts have died while serving the US Space Program?
Which of these is NOT why Earth's atmosphere is important?
Earth is nicknamed after which fairy tale character?
This force causes meteors to break up when it enters Earth's atmosphere
Why are astronomers interested in Jupiter's moons like Europa and Triton?
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