Mercury

Front

What is the length of a year on Mercury in Earth-days?

Back

88 days

Front

How does Mercury's size compare to other planets in our solar system?

Back

Mercury is the smallest planet.

Front

Does Mercury have rings around it?

Back

No, Mercury does not have rings.

Front

Does Mercury have an atmosphere?

Back

No, Mercury does not really have an atmosphere.

Front

What type of planet is Mercury?

Back

Mercury is a terrestrial planet, meaning it has a rocky surface.

Front

What is the closest planet to the Sun?

Back

Mercury is the closest planet to the Sun.

Front

What is the surface of Mercury like?

Back

Mercury has a rocky surface with many craters.

Front

How many moons does Mercury have?

Back

Mercury has no moons.

Front

What is the temperature range on Mercury?

Back

Mercury has extreme temperature changes, from very hot to very cold.

Front

What is the main reason Mercury has no atmosphere?

Back

Mercury's gravity is too weak to hold onto an atmosphere.