Pulsar

Pulsar

A spinning star that gives off beams of radiation that sweep around like the beam of light sent out by a lighthouse.

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Industry/Domain: Astronomy
Category: General astronomy
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pulsar

Astronomy; General astronomy

A spinning star that gives off beams of radiation that sweep around like the beam of light sent out by a lighthouse.

pulsar

Astronomy; Planetary science

Variable radio star having stable, very short (around one second) periods of pulsations. Electrons moving rapidly in a pulsar's magnetic field produce narrow beams of radiation ...

pulsar

Earth science; Geology

A celestial object of small angular size that emits pulses of radio waves with a regular period between about 0.03 and 5 seconds.

pulsar

Science; General science

A celestial radio source producing intense short bursts of radio emission. Since their discovery in 1968, over 1750 pulsars have been found (as of October 2006), and it has become ...

pulsar

Astronomy; General astronomy

young neutron star with a strong magnetic field and rapid rotation that produces beams of radiation out of its magnetic poles. If the beams cross our line of sight, we see the ...

pulsar

Science; General science

A celestial source of radiation emitted in brief (0.03 second to 4 seconds) regular pulses. First discovered in 1967, pulsars are believed to be rotating neutron stars. The strong ...

astronomical unit (AU)

Astronomy; General astronomy

Approximately equal to the mean earth-sun distance, which is about 150,000,000 km or 93,000,000 miles. Formally, the AU is actually slightly less than the earth's mean distance ...

celestial coordinates

Astronomy; General astronomy

Any system for locating the positions of objects on the celestial sphere. Various systems are defined, according to the chosen point of observation (the origin) and the plane of ...

distance modulus

Astronomy; General astronomy

The difference between the apparent magnitude of an object, m, corrected for *interstellar absorption, and its absolute magnitude, M. This difference is directly linked to the ...

luminosity class

Astronomy; General astronomy

A classification of stars according to their luminosity, which can vary widely for a given *spectral type. Luminosity class indicates, for example, whether a star is a supergiant, ...

asteroid

Astronomy; General astronomy

Any of the many small rocky or metallic objects in the Solar System, mostly lying in a zone (the asteroid belt) between the orbits of Mars and Jupiter; also known as a minor ...

elliptical galaxy

Astronomy; General astronomy

A type of galaxy with a smooth, featureless circular or elliptical appearance, no spiral arms, and little or no interstellar gas or dust; symbol E. Elliptical galaxies range from ...

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