Ancient men believed that the stars were eternal and unchanging, but today we know that this is not so. Stars are born, develop and finally die from the effect of nuclear fusion. When a supernova star explodes as a result of its mass, its remnants become a nebula of stardust. Crab Nebula
Astronomers say this new formation is a neutron star of high density and high gravitational pull. One of these formations is the Crab Nebula.
The Crab Nebula was formed nearly a thousand years ago and was identified by Chinese astronomers
The supernova explosion that created the Crab stellar nebula was observed for 22 months until the mid-eleventh century. In the 18th century it was already possible to observe this phenomenon with a telescope and since then it has been the object of study by astronomers. Crab Nebula
Its nebulous mass is formed by cosmic gas and dust and is found 7,000 light-years from planet Earth, more specifically in the constellation Taurus. Its expansion speed reaches 1500 km/s and has a diameter of 11 light years. With the dust inside it could form more than 30,000 Earth-like planets. Astronomers claim that this type of cataclysm , the remnant of a supernova, happens very little in our galaxy.
In astronomical nomenclature it is known as SN 1054 (the letters are the abbreviation for supernova and the numbers refer to the year that was first seen in star formation).
Inside is the Crab Pulsar
Stars maintain a balance between two forces: the inner core that causes them to expand and the force of gravity that causes them to contract. When this balance is broken, an explosion occurs, which can generate a supernova.
The neutron stars generated emit electromagnetic radiation which in turn causes a jet of light with a lot of energy . This magnetic shaft works as a powerful beacon that emits light and is known as a pulsar. Crab Nebula
It is estimated that there are hundreds of thousands of pulsars across the galaxy
The observation of the Crab nebula is possible because in its interior there is a pulsar whose energy is 75,000 times greater than that of the Sun (in astronomical nomenclature it is identified as PSR B0531+21).
The Crab Pulsar was discovered in 1969 and coincides with astronomical observations described in the 11th century. Crab Nebula