Astronomy

Front

How long does it take for the Earth to make a complete trip around the Sun?

Back

365 days

Front

How far up does 'Outer Space' begin?

Back

62 miles above Earth

Front

How do satellites help us to understand outer-space?

Back

They take pictures and collect information about planets, stars, and galaxies.

Front

How do we know what is in space?

Back

Telescopes, space missions, and satellites help us know what is in space.

Front

_______ are groups of celestial objects that move together throughout the universe.

Back

Galaxies

Front

What is a galaxy?

Back

A galaxy is a large system of stars, gas, dust, and dark matter bound together by gravity.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our Solar System.

Front

What is a planet?

Back

A planet is a celestial body that orbits a star and is large enough to be rounded by its own gravity.

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity, like our Sun.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the Sun, displays a visible atmosphere and sometimes a tail.