The unknown galaxies
We all know about galaxies less or more, a galaxy contain a
very large amount of mass in it. There are many stars, nebulae, some of gas, dust,
and also some of dark matter in it. There are many fascinating information
present like a large galaxy contains about a trillion stars in it there are so
many small galaxy present those galaxy contains even 100,000 stars in it. And
do you know that are some galaxies present which doesn’t have even a proper
size, they are totally irregular in shape. There are many types of galaxies present
in this universe but the main three types of galaxies present named as elliptical,
spiral, and irregular in shape.
Why there are
some irregular shaped galaxies present because of the collision between the two
galaxies. The central point this galaxies is quasar, those quasar are called
the nuclei of the galaxy. 
Do you know
that the furthest known galaxy from our earth is 12 billion light years away,
and the furthest known quasar in known it is in the distance of 13 million
light years? This quasar in contains mainly old star but the spiral arm of the
galaxy contains mainly the young stars. The central part of galaxies is smaller
relatively and dense, and contains mainly older and some of red or yellow old
star and the colour of younger stars blue.
Remember the name nebulae really those nebulae are nothing
but a cloud of dust and gas. This nebulae shines because of their gas emit
light because of radiation. Dark nebulae appear because of their block out of
light. Nebulae are two types that are planetary nebulae and supernova remnants.
When the gas shell moving away from a stellar core at a great speed, it’s
following a great explosion that’s explosion create a supernova .when there is
many star in a circle present that’s called a star clusters and those cluster
when open that’s called a open clusters those open clusters only contains young
star and group of old stars are called globuler clusters 
No comments:
Post a Comment