| 21. | It is a division of the privately held Pulsar International.
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| 22. | More than 500 pulsars have been found in the sky.
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| 23. | They could be from dark matter annihilation or from pulsars.
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| 24. | This pulsar was later interpreted as an isolated, rotating neutron star.
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| 25. | They showed in 1992 that the pulsar was orbited by two planets.
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| 26. | The paper announcing the discovery of pulsars had five authors.
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| 27. | There are three types of pulsar planets known so far.
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| 28. | The Pulsars were manufactured in Japan between August 1990 until November 1994.
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| 29. | Instead a new version Pulsar 200NS was launched in 2012.
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| 30. | The precise periods of pulsars make them very useful tools.
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