Because over time, pulsars and neutron stars slow down over time.
The fastest ones are therefore younger.
You might think of a pulsar as very vaguely similar to a lighthouse. A pulsar is a small, rapidly spinning neutron star; flashing at a rate of 4 to 6 flashes per second, they are so precisely regular that when radio astronomers first discovered them, the astronomers couldn't imagine a natural explanation and named them "LGM signals" - for "little green men". They might be, the suggestion went, some form of interstellar navigational beacon.
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. See related questions for more information.
The first pulsar was found by Jocelyn Bell Burnell and Antony Hewish in July 1967.Because they had not idea what they had discovered they called the new object LGM-1, for "little green men". It was later determined to be a pulsar [See related question]. Their pulsar was later dubbed CP 1919, and is now known by a number of other designators.See related link for more information.
Arcturus and all the other bright stars would have been known to the first astronomers, the Babylonians.
The earliest supernova that has ever been recorded happened in 185 AD. Some Chinese astronomers first saw it.
You might think of a pulsar as very vaguely similar to a lighthouse. A pulsar is a small, rapidly spinning neutron star; flashing at a rate of 4 to 6 flashes per second, they are so precisely regular that when radio astronomers first discovered them, the astronomers couldn't imagine a natural explanation and named them "LGM signals" - for "little green men". They might be, the suggestion went, some form of interstellar navigational beacon.
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. See related questions for more information.
First of all, the main distinguishing factor between Pulsar 150 and Pulsar 135 is the cost. Pulsar 150, as the name says, 150cc has more power, pick up and speed when compared to Pulsar 135. But, pulsar 135 has also got the equivalent features of Pulsar 150. (Because of the latest technology) In a nutshell, Pulsar 135 is a lite version of Pulsar 150. And, my opinion, Pulsar 150 is better...
Japan. Pulsar watches actually belonged to the Hamilton company but was taken over by Seiko in 1979. Pulsar created the first digital watch in the world.
Many people consider the first astronomers to be the first humans that ever looked up at the night sky and wondered what was really up there. So cavemen were probably the first astronomers.
a nanosecond is smaller a millisecond is one thousand times smaller than a second and a nanosecond is one billion times smaller than a second
Orell Golding
Neil amistorng.
The ancient Greeks were the first astronomers.
A company called Pulsar made the first practical and commercial digital watch.
Because it allowed astronomers their first direct view of a cosmic collision.
By Chinese astronomers in 185 AD