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A pulsar is a rapidly spinning neutron star, and a neutron star is created when its host star explodes as a massive supernova explosion.

Any planets, which formed along with the host star, should have been destroyed or ejected out of orbit when the star blew itself apart.

Yet, one of the first extrasolar planets found was located around a millisecond pulsar PSR B1257+12.

It is now believed that these planets are either the rocky core remains of massive gas giants (chthonian planets), or planets that had formed from the remains of the supernova explosion during a period of secondary planetary formation.

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โˆ™ 2009-07-20 23:41:38
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Q: Why were astronomers surprised to find a pulsar with a planetary system?
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Related questions

Where Astronomers expect to find planetary system?

Anywhere there are stars. Hundreds of planets have already been discovered outside our own Solar System.

Is a pulsar a part of your solar system?

No, a pulsar star is not in our solar system.

How many satellites are there in your solar system according to 2010 research?

As of the end of 2010, planetary astronomers have documented about 245 known satellites of the planets in the solar system.

Is a pulsar a part of the solar system?

There isn't a pulsar in our Solar System. The closest known pulsar is 280 light years from us.

Are pulsar star found in the solar system?

No. There is only one star in our Solar System, the Sun and it is not a pulsar.

Which is biggest a planetary nebula a planetary system or a galaxy?

The galaxis are bigger than planetary nebulae, that are bigger than planetary systems.

What term is applied to any star that is the center of a planetary system?

A sun is a star that is the center of a planetary system.

What three gears make up a complete planetary gear system?

The gears in a planetary gear system are the drive gear, ring gear, and planetary gear.

What is the largest planetary moon in the universe?

well since astronomers cant see all of space its impossible to andswer but the biggest in our solar system i believe is Ganymede of Jupiter, in the galaxy the largest is appartently also ganymede

What percentage of all planetary matter in the solar system is in Jupiter's mass?

It makes up about 70% of all the planetary matter in the solar system.

Is the main difference between a pulsar and a binary system that a pulsar is made up of two neutron stars and that a binary system is made of of two normal stars?

Not exactly, while a pulsar is a specific type of neutron star (that being a "spinning neutron star") and a binary system is a pair of stars orbiting each other, a pulsar does not need to be part of a binary system. It would be possible, however to have a binary system with one of the pair being a pulsar and the other a neutron star (assumed to be the non-spinning or "normal neutron star" variety).

What did ptolmey say about the solar system?

Ptolemy sought to explain planetary movements by stating that every planet in the solar system revolved around the sun. Astronomers began to question this explanation when they realized that planets often appeared to be moving backwards relative to Earth.

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