Have you ever wondered why you look up and see a dark sky at night?
Resource Details
MinutePhysics
Concepts
light, telescopes, stars, space, time, thunder, galaxies, night
Additional Tags
direction, reason, answer, physics, atmosphere, edge, distant stars, universe, wait, past, night sky, background, begin, earliest stars, star, distant, dark, point, moving, farther, beginning, bright, reader, infrared, redder
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