Solar System
What kind of celestial body is the sun?
A Star
What is the name of our galaxy?
The Milky Way
Which planet do we live on?
Earth
Which planet is known as 'the ringed planet'?
Saturn
What is the smallest planet in our solar system?
Mercury
Which planet is known as the red planet?
Mars
How do we measure a year?
Orbit around the sun
How long does it take for the earth to complete one rotation?
24 hours/ 1 day
What is the largest planet in our solar system?
Jupiter
Which planets would be most habitable?
What are the four inner planets in order?
Mercury, Venus, Earth and Mars
What separates the four inner planets and the four outer planets?
Asteroid Belt
What is the planet that got kicked out of the solar system?
Pluto
What are the four outer planets in order?
Jupiter, Saturn, Uranus and Neptune
What is the cloudy light we can sometimes see as a strip in the sky?
The Milky Way
What planet has the shortest year?
Mercury (88 earth days)
Which planet has the longest year?
Neptune (164.8 Earth years)
Why is Venus uninhabitable?
A dense CO2 atmosphere that leads to air pressure ~90x ours on earth that is toxic and causes a greenhouse effect that makes Venus our hottest planet on average.
Which planet in the solar system has more than 75 moons?
Jupiter
Which planets have no moons?
Venus and Mercury
Why is space exploration so expensive?
Large fuel costs to reach escape velocity on Earth
What is the difference between an orbit and a rotation?
An orbit is a lap around the sun (1 year for the planet) while a rotation is a 360o revolution of the planet (1 day for the planet)
About how many light years away is the next closest solar system?
About 4.24 lightyears
What are the all the planets in order?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
Why do we weigh different amounts on different planets?
The mass/size of the planet changes it's surface gravity.