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.
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- Does Mercury have moons?
“Mercury has no moons.”
Reference: NASA
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Which metal is liquid at room temperature?
Mercury is the only metal that's liquid at room temperature.
Fun fact about Neil Armstrong's moonwalk
In 1963, baseball pitcher Gaylord Perry remarked, "They'll put a man on the moon before I hit a home run." On July 20, 1969, a few hours after Neil Armstrong set foot on the moon, Gaylord Perry hit his first of six home runs.