A magnetic field surrounds Earth called the magnetosphere, protecting us from solar wind and cosmic radiation.
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The Voyager 1 spacecraft is the farthest human-made object from Earth and still communicates with us.
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The telescope expanded understanding of the universe.
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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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The observable universe is about 93 billion light‑years wide.
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Venus is sometimes called Earth's sister planet.
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The Milky Way galaxy is part of the Local Group.
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Exoplanets have been discovered in habitable zones around distant stars.
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