There are photons of light traveling through space right now from stars that no longer exist.
Fact #2481
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The Mars Pathfinder mission tested new landing techniques.
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Neptune appears blue because of methane in its atmosphere.
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The light you see from some stars today began traveling before humans existed.
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The light you see from some stars today began traveling before humans existed.
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Black holes can slow time so much that seconds near them equal years far away.
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The Earth's rotation slightly bulges at the equator.
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Jupiter is the largest planet in the solar system.
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The Sun makes up 99.8% of solar mass.
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