Deep Space 1 tested an ion drive in space in 1998 — the technology now propels spacecraft to the outer solar system.
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There are rogue planets drifting through space with no star at all.
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The Moon's gravity affects ocean tides.
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The International Space Station travels at about 28,000 kilometers per hour.
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The observable universe is about 93 billion light‑years wide.
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The Sun makes up 99.8% of solar mass.
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The James Webb Space Telescope observes distant galaxies in infrared light.
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