Basic
The 3 components that make up Mercury's interior
What is the metallic core, mantle, and crust?
The metallic core makes up _______% of the planet's interior
What is 85%?
Mercury is this far away from the sun
What is 30 million miles?
In 1631, this astronomer first observed Mercury through a telescope
Who is Galileo?
OR
Who is Thomas Harriott?
Mercury is
What is the first planet from the sun?
OR
What is a terrestrial planet?
OR
What is the smallest planet?
OR
What is the fastest planet?
Mercury's orbit around the sun
What is 88 days?
Mercury is this much closer to the sun than Earth (%)
What is 60%?
In this year, signs of ice in permanently shadowed areas on Mercury were discovered.
Mercury's can be compared to
What is the moon?
One FULL (day and night) day on Mercury
What is 176 days?
According to the theory that Mercury makes some of its own water, this process accounts for ________% of the planet's ice supply
What is 10%?
In 1974, this spacecraft took photos of half of the planet's surface
What is the Mariner 10?
What is Caloris?
The diameter of Mercury
What is 3000 miles?
Mercury (so far) has shrunk this much inwards (answer in miles)
What is 4.4 miles?
Astronomers in 1965 determined this fact about Mercury
What is Mercury is not always facing the sun?
What is Texas?
The speed at which Mercury orbits the sun
What is 100,000 mph?
Mercury's gravity (answer in m/s2
What is 3.7 m/s2?
During this year, astronomer Pierre Gassendi, observed Mercury cross the face of the sun through a telescope