- Star Types - Science@NASA
Scientists call a star that is fusing hydrogen to helium in its core a main sequence star Main sequence stars make up around 90% of the universe’s stellar population They range in luminosity, color, and size – from a tenth to 200 times the Sun’s mass – and live for millions to billions of years
- The Lives, Times, and Deaths of Stars - NASA Science
These and planetary nebulae from low-mass stars are the sources of many of the elements we find on Earth Their dust and gas will one day become a part of other stars, starting the whole process over again That’s a very brief summary of the lives, times, and deaths of stars
- Star Lifecycle - Science@NASA
Groups of stars make up galaxies, while planets and ultimately life arise around stars Although stars have been the main topic of astronomy for thousands of years, we have begun to understand them in detail only in recent times through the advent of powerful telescopes and computers
- Hubble Snapshot Captures Life Cycle of Stars - Science@NASA
This picture nicely illustrates the entire stellar life cycle of stars, starting with the Bok globules and giant gaseous pillars (evidence of embryonic stars), followed by circumstellar disks around young stars, and progressing to aging, massive stars in a young starburst cluster
- Multiple Star Systems - Science@NASA
These multiple star systems come in a stunning variety of flavors: large, hot stars orbited by smaller, cooler ones; double stars orbited by planets; pairs pulsing with X-rays as one sheds material that is devoured by the other; systems with as many as seven stars in a complex gravitational dance
- Other Stars, - Science@NASA
As we look around the galaxy, how different is our solar system from other systems in the Milky Way? How much are we alike? This five-part series looks at some of our intriguing galactic neighbors — these other worlds, and the stars that they orbit
- Hubble Focus: The Lives of Stars - Science@NASA
Hubble has spotted countless stars roaming the galaxy alone or in pairs, but sometimes huge groups of stars are born in a giant litter of dozens to a million stars held together by gravity By studying these star clusters, Hubble offers us new insight into stellar and even galactic evolution
- Solar System Exploration - Science@NASA
The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1 3 million asteroids, and about 3,900 comets
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