Planets
what is the smallest planet in our solar system?
Mercury
how many moons does earth have?
1
what color is the sun?
The sun is a mixture of colors.
which star is the center of our solar system?
the sun
How long does it take the moon to orbit the Earth?
28 days
What is the third planet from the sun?
Earth
Which planets have no moons?
Mercury and venus
how old is the sun?
around 4.6 billion years ago
when did the solar system form?
4.6billion years ago
Name the spacecraft that carried the first astronauts to the moon
Apollo 11
What protects the earth from meteoroids and radiation?
The earths atmosphere
Which planet has the most moons?
Saturn
how many earths could fit inside the sun?
1 million
What phenomena keeps the planets in steady orbit around the sun?
Gravity
Who invented astronomy?
The ancient greeks
What planets are known as the gas giants
Jupiter,Saturn,Neptune, and Uranus
Phobos and deimos are the moons of what planet?
Mars
how long do the sun's rays take to reach earth?
8 minutes
what causes a solar eclispe
The moon moves between the sun and Earth, casting a shadow on Earth
What is the study of the stars, planets, and galaxies?
Astronomy
How long is one year on Jupiter (in earth years)
13 earth years
Titan is the moon of what planet?
Saturn
what is a sunspot?
Phenomena on the sun's atmosphere that look like dark spots
where is the astroid belt located?
between mars and jupiter
What do you call a large group of stars, dust, and gas?
A galaxy