Category: Astronomy

The mass of a planet can be determined by observing the time period of its satellite. Let M be the...

The magnitude of star is the measure of its brightness. When measured from the earth, two stars...

I think most of us already know what a year is but I am going to give a definition anyways. A year...

So far all we have asked is does life exist beyond earth? There are many scientist and...

History of the black hole The concept of a body so massive that even light could not escape was...

Consider a starting position at some zero point. We toss a coin that tells a man to move forward...

Dark matter is material that gravitates but does not emit very much light. It is undetectable by...

Stars revolve around the center of galaxies at a constant speed over a large range of distances...

E. Hubble determined that there is a relation between the distance of various galaxies and their...

There have been two leading models for the spiral structure of Galaxies: Star formation caused by...

The classification of galaxies was proposed by Edwin Hubble in 1936, popularly known as tuning...