The Earth's atmosphere protects life by filtering harmful radiation.
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Venus has the longest day of any planet in the solar system.
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The observable universe is about 93 billion light‑years wide.
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A day on Mars is slightly longer than a day on Earth.
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The Milky Way contains regions of active star formation.
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The Oort Cloud is a theoretical shell of icy objects surrounding the solar system.
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Neutron stars can collide and produce heavy elements.
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The Earth's rotation causes day and night cycles.
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The Voyager Golden Record was sent into space containing sounds and images from Earth.
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