Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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The Moon completes an orbit around Earth in about 27 days.
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Some galaxies appear distorted due to gravitational effects.
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Some pulsars emit beams of radiation like cosmic lighthouses.
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The observable universe is about 93 billion light‑years wide.
Fact #1870 · Space
The observable universe is about 93 billion light‑years wide.
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Black holes can slow time so much that seconds near them equal years far away.
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The James Webb Space Telescope observes distant galaxies in infrared light.
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There are rogue planets drifting through space with no star at all.
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