define star topology

Stars - A star is a dense cloud of hydrogen and helium gas contracting under its own gravitational pull. In all the stars hydrogen atoms are continuously converted into helium atoms and this process is accompanied by a large amount of energy. This energy is radiated in..

A star is a dense cloud of hydrogen and helium gas contracting under its own gravitational pull. In all the stars hydrogen atoms are continuously converted into helium atoms and this process is accompanied by a large amount of energy. This energy is radiated in the form of..

The life cycle of a star begins with the accretion of hydrogen and helium gas at -173 o C into smaller dense clouds, which contract under their own gravity. This dense cloud of gas contracting under its own gravity is called a Protostar . A cloud of gas from which a star is born..

Consider two stars S 1 and S 2 of masses M 1 and M 2 respectively, revolving around a common centre of mass O. Clearly the two stars constitute a binary system. Let a 1 and a 2 be the radii of revolution. Then, by definition of centre of mass, ..

How many stars are shaded in the set? => 4 out of 5 or 3 out of 5 or 5 out of 5 or 1 out of 5..

How many stars are shaded? => 1 out of 4 or 4 out of 4 or 3 out of 4 or 2 out of 4..

What is the fraction of the stars that are shaded? => 3 / 4 or 4 / 4 or 1 / 4 or 2 / 4..

There are some stars and some circles in the picture shown. Find the ratio of stars to circles. => 3 : 1 or 1 : 2 or 2 : 1 or 1 : 3..

How many stars are there? => 2 or 3 or 4 or 1..

How many stars are shaded? => 3 out of 4 or 1 out of 4 or 2 out of 4 or 4 out of 4..