The Earth
Which is the smallest planet within our solar system?
Mercury
Which star is the center of our solar system?
The sun
Which is the second smallest planet within our solar system?
Mars
Who was the first person to walk on the moon?
Neil Armstrong
How old is the sun?
Roughly 4.6 billion years old
What protects Earth from meteoroids and radiation from the sun?
It’s atmosphere
Who was the first woman to travel into space?
Valentina Tereshkova
Which is the brightest planet in the night’s sky?
Venus
Who invented astronomy?
The ancient Greeks
Which is the biggest desert in the world?
Sahara Desert
How many moons does Earth have?
One
How many Earths could fit inside the sun?
One million
Which planet is larger, Neptune or Saturn?
Saturn
Where can you go to see projections of the night sky?
A planetarium
Which country has the largest population in the world?
China
How long does it take the moon to orbit the Earth?
28 days
What do you call a large group of stars, dust, and gas?
A galaxy
Which planet is closest in size to Earth?
Venus
What is the study of the stars, planets, and galaxies?
Astronomy
Which is the largest country in the world?
Russia
When was the first Earth Day?
1970
How many planets are in our solar system?
8
Which is the oldest planet in our solar system?
Jupiter
What country produces the most energy in the world?
China
Which is the hottest continent on Earth?
Africa