- 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.science.nasa.gov/universe/galaxies/
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Galaxies - NASA Science
网页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 …
仅显示来自 science.nasa.gov 的搜索结果What is a Galaxy
A galaxy is a huge collection of gas, dust, and billions of stars and their solar …
Galaxies Over Time
Galaxies Over Time. Determine how galaxies evolved from their formation up …
Types of Galaxies
A galaxy is a huge collection of gas, dust, and billions of stars all held together by …
Galaxy | Definition, Formation, Types, Properties, & Facts
- A galaxy is any of the systems of stars and interstellar matter that make up the universe. Many …
Are all galaxies the same shape? - Galaxies differ in shape, with variations resulting from how the systems were formed and subse…
What are the types of galaxies?
- A galaxy is any of the systems of stars and interstellar matter that make up the universe. Many …
What Is a Galaxy? | NASA Space Place – NASA Science for Kids
网页2024年9月13日 · A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has …
Galaxies Over Time - NASA Science
网页Galaxies Over Time. Determine how galaxies evolved from their formation up to the present time. Visible light Hubble data combined with infrared data from Spitzer, went into creating this stunning image of M51, the …
Galaxies - HubbleSite
网页2024年1月31日 · Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies …
Galaxy Types - Science@NASA
网页Types of Galaxies. Scientists sometimes categorize galaxies based on their shapes and physical features. Other classifications organize galaxies by the activity in their central regions – powered by a supersized black hole – …
Galaxies—facts and information - National Geographic
网页2019年4月17日 · Some galaxies are similar to the Milky Way, but some are quite different. Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held...
New 3D Visualization Highlights 5,000 Galaxies Revealed by Webb
网页2023年7月10日 · This video, a scientific visualization of the galaxies captured as a part of the CEERS (Cosmic Evolution Early Release Science) Survey, showcases a large …
Galaxies | Astronomy.com
网页Galaxies are vast collections of stars, gas, dust, and dark matter bound together by gravity. There are hundreds of billions of galaxies in the universe. Cosmology, Galaxies, Milky Way.
Types of Galaxies | NASA Space Place – NASA Science for Kids
网页2022年1月19日 · A galaxy is a huge collection of gas, dust, and billions of stars all held together by gravity. All galaxies are made up of these same things. However, they come …
