Milky Way - Wikipedia
The Milky Way [c] is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.
What Is a Galaxy? | NASA Space Place – NASA Science for Kids
2024年11月8日 · What Is a Galaxy? The Short Answer: A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity. We live on a planet called Earth that is part of our solar system. But where is our solar system? It’s …
Galaxies - NASA Science
Galaxies consist of stars, planets, and vast clouds of gas and dust, all bound together by gravity. The largest contain trillions of stars and can be more than a million light-years across. The smallest can contain a few thousand stars and span just a few hundred light-years.
What is the Milky Way? It’s our home galaxy - EarthSky
2024年1月1日 · Both refer to our home galaxy, our local island in the vast ocean of the universe, composed of hundreds of billions of stars, one of which is our sun. Long ago, it was possible for everybody in...
Milky Way Galaxy | Size, Definition, & Facts | Britannica
5 天之前 · Milky Way Galaxy, large spiral system consisting of several hundred billion stars, one of which is the Sun. It takes its name from the Milky Way, the irregular luminous band of stars and gas clouds that stretches across the sky as seen from Earth. Although Earth lies well within the Milky Way Galaxy (sometimes simply called the Galaxy ...
The Milky Way: Earth’s home galaxy | Astronomy.com
2019年8月2日 · Giant clouds of gas and dust sprinkled with splashy star clusters adorn the Milky Way’s spiral arms, while the galaxy’s vast halo teems with darker matter. By Francis Reddy | Published: August ...
The Milky Way Galaxy - NASA Science
2017年11月8日 · Using infrared images from NASA's Spitzer Space Telescope, scientists have discovered that the Milky Way's elegant spiral structure is dominated by just two arms wrapping off the ends of a central bar of stars. Previously, our galaxy was thought to …
Milky Way and Our Location - NASA
2012年2月1日 · Graphic view of our Milky Way Galaxy. The Milky Way Galaxy is organized into spiral arms of giant stars that illuminate interstellar gas and dust. The Sun is in a finger called the Orion Spur.
Where is Earth in the Milky Way? - Universe Today
2016年7月13日 · Andromeda, the closest major galaxy to our own, is about twice as large as our own. It measures 220,000 light years in diameter, and has an estimated 400-800 billion stars within it. If you could...
Where is Earth in the Milky Way Galaxy? - Astronomy Explained
We’ll look at the basics of the Milky Way galaxy, its structure, and the specific location of Earth within this galaxy. Then, we’ll discuss the methods scientists use to determine Earth’s position, the movement of our planet within the Milky Way, and some interesting facts about our perspective from Earth.