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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- How many stars are in the Milky Way?
“The Milky Way contains an estimated 100 billion to 400 billion stars.”
Reference: NASA
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How big is the Milky Way?
The Milky Way is about 100,000 light-years across.
How long does sunlight take to reach Earth?
Sunlight takes about 8 minutes and 20 seconds to reach Earth, so we always see the Sun as it was a few minutes ago.