A day when heavenly bodies align
On July 1, 2015 Earth, Venus and Jupiter will be ordered on a single line.
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Solar System Facts
Solar system facts and facts about solar systems.
10 facts on this shelf
How much of the solar system's mass is in the Sun?
The Sun contains about 99.8% of all the mass in our solar system.
What is the smallest planet?
Mercury is the smallest planet in our solar system.
What is the hottest planet?
Venus is the hottest planet in the solar system, about 900°F at the surface.
What is the tallest volcano in the solar system?
Mars's Olympus Mons is about three times taller than Mount Everest.
What is the largest moon in the solar system?
Jupiter's moon Ganymede is the largest moon in the solar system, and it's even bigger than Mercury.
What is the most volcanic place in the solar system?
Jupiter's moon Io is the most volcanically active place in the solar system.
Which planet has the strongest winds?
Neptune has the strongest winds in the solar system, up to about 1,200 miles per hour.
What is the farthest planet from the Sun?
Neptune is the farthest planet from the Sun.
How long does it take the solar system to orbit the Milky Way?
Our solar system takes about 230 million years to orbit the center of the Milky Way.