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Pulsar

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Pulsar
A pulsar is a rotating neutron star that gives off radio waves out from its axis in a repeating pattern. When the axis rotates away from earth, it looks to us like the light is gone, so we see the pulsar as flashing on and off.
Pulsar

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Exploringnature.org has more than 2,000 illustrated animals. Read about them, color them, label them, learn to draw them.