Pulsar - A pulsar (pulsating star) is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation. Neutron stars are very dense, and have short, regular rotational periods. This produces a very precise interval, between pulses that range from roughly milliseconds to seconds for an individual pulsar.  Certain types of pulsars rival atomic clocks in their accuracy in keeping time.

Pulsar - A pulsar (pulsating star) is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation. Neutron stars are very dense, and have short, regular rotational periods. This produces a very precise interval, between pulses that range from roughly milliseconds to seconds for an individual pulsar. Certain types of pulsars rival atomic clocks in their accuracy in keeping time.

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Neutron stars are the densest and smallest stars known to exist in the universe; with a radius of only about 12–13 km (7 mi), they can have a mass of about twice that of the Sun.

Neutron stars are the densest and smallest stars known to exist in the universe; with a radius of only about 12–13 km (7 mi), they can have a mass of about twice that of the Sun.

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NOT a nebula. More like a magnetar or neutron star. In any case, beautiful image.

NOT a nebula. More like a magnetar or neutron star. In any case, beautiful image.

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The pressure that exists in the core of a neutron star is so dense and strong, scientists think it may be very similar to the conditions of the Big Bang.

The pressure that exists in the core of a neutron star is so dense and strong, scientists think it may be very similar to the conditions of the Big Bang.

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A neutron star that's a fast particle accelerator may lie at the heart of the Crab Nebula

A neutron star that's a fast particle accelerator may lie at the heart of the Crab Nebula

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Inside neutron stars, matter is packed so tightly atoms aren't stable and protons and electrons melt down into neutrons.

Inside neutron stars, matter is packed so tightly atoms aren't stable and protons and electrons melt down into neutrons.

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