What does 'light year' really mean
Solar System 101
National Geographic
How Long Does It Take to Reach Each Planet in Our Solar System?

What objects can be found in our solar system?
100

How long does a light year take to travel

One year

100

What is the end of the solar system called?

Oort Cloud

100

How many years did it take for the Messenger mission to get to Mercury

six and a half years

100

What are the most commonly found objects in our solar system

asteroids

200

What does one light year equal?

 5.88 billion miles  

5.88 trillion miles

5.88 TRILLION miles

200

What orbits the planets?

Asteroid belt

200

When you line up Earth and Venus, how far apart are they from each other?

38 million Kilometers

200

What is the largest man-made object in space

ISS

300

How many light-years across is the Milky Way?

100,000 light years

300

Where in the Milky Way is our solar system?

Orion Spur Star cluster

300

What is the launch window to go to Mars

 every 26 months

300

What is the tail of gases called on a comet

coma

400

How many seconds does light take to travel from the Moon to the Earth?

1 second

400

What are the four terrestrial planets?

Mercury, Venus, Earth, and Mars

400

How much weaker is the sunlight for Uranus

400 times weaker

400

What is the largest asteroid called

Ceres

500

A star is 100 light-years away. How long has the star been without light today? 

100 years ago

500

What are the four Jovian Planets?

Jupiter, Saturn, Uranus, and Neptune

500

How much farther is Neptune from the sun than Earth

30 times farther

500

How big can a meteoroid get

1 meter

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