Stars Universe Space Galaxy

Elliptical galaxies may also be small in which case.

Stars universe space galaxy. A galaxy is a huge collection of gas dust and billions of stars and their solar systems. Galaxies range in size from dwarfs with just a few hundred million 10 8 stars to giants with one hundred trillion 10 14 stars each orbiting its galaxys center of mass. 1000000000000000000000000 stars or a 1 with 24 zeros after it 1 septillion in the. Its a small part of the milky way galaxy.

Galaxies are categorized according to their visual morphology as elliptical 4 spiral or irregular. Multiplying that by the milky ways estimated 100 billion stars results in a large number indeed. The universe is packed with galaxies and stars. Multiplying the number of galaxies which is about 2 trillion by the 100 million stars in the galaxy suggests there could be about 10 raised to the 20th power stars in the universe.

The universes largest known galaxiesgiant elliptical galaxiescan contain up to a trillion stars and span two million light years across. Nasas wfirst space telescope a refurbished spysat eye. A galaxy is held together by gravity. Our galaxy the milky way also has a supermassive black hole in the middle.

By spying on star clusters in a nearby galaxy the hubble space telescope has shown that star clusters arent always as old as they appear. For the universe the galaxies are our small representative volumes and there are something like 10 11 to 10 12 stars in our galaxy and there are perhaps something like 10 11 or 10 12 galaxies. It is one of many massive young stars in the quintuplet cluster in the galactic center region. With this simple calculation you get something like 10 22 to 10 24 stars in the universe.

The universe is often called space and is sometimes known as the cosmos. It is believed the universe was created by the big bang theory.