Web15 Galaxy Facts for Kids. A galaxy is a collection of dark matter, dust, interstellar gas, stars and stellar remnants bound by gravitation. Astronomers believe there are over 100 billion galaxies in the observable universe. Small dwarf galaxies can have as few as ten million stars, while large galaxies can have hundreds of trillions of stars. WebA galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. Galaxies are divided into four main groups: spiral, barred spiral, …

Overview Mercury – NASA Solar System Exploration

WebGalaxies are huge spans of gas, dust, dark matter, and from a million to trillions of stars. Everything in a galaxy is bound by gravity. Each star in a galaxy is a sun and there are thousands of solar systems in every galaxy. WebDec 4, 2014 · The Milky Way Galaxy is an immense and very interesting place. Not only does it measure some 120,000–180,000 light-years in diameter, it is home to planet Earth, the birthplace of humanity. Our ... how does ssh connection work

What are elliptical galaxies? Find out on EarthSky

WebDec 5, 2012 · The giant elliptical galaxy NGC 1132 sits about 300 million light-years from Earth. With a roughly 240,000 light-year diameter, it’s over twice the size of our Milky Way! The many points of ... WebMost galaxies are between 10 billion and 13.6 billion years old. Some are almost as old as the universe itself, which formed around 13.8 billion years ago. Astronomers think the youngest known galaxy formed … WebSep 18, 2015 · 10 Facts about the Milky Way Emalee Couture 9/18/15 1. It’s warped. The Milky Way is a disk that measures about 120,000 light years across, with a central bulge that has a diameter of about 12,000 light years. ... Our galaxy is made up of about 90% dark matter, matter that cannot be seen, and about 10% “luminous matter”, or matter that we ... photo starter wrench