A star is a luminous spheroid of plasma held together by self-gravity. [1] The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light.

Understanding the Context

What is a star? A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye. A star’s gas provides its fuel, and its mass determines how rapidly it runs through its supply, with lower-mass stars burning longer, dimmer, and cooler than very massive stars.

Key Insights

Star - Formation, Evolution, Lifecycle: Throughout the Milky Way Galaxy (and even near the Sun itself), astronomers have discovered stars that are well evolved or even approaching extinction, or both, as well as occasional stars that must be very young or still in the process of formation. YOUR GUIDED PATHWAY TO GRADUATION ADVISING | REGISTRATION | CAREER Connect to STAR Help Center To view your assigned registration start time (time ticket), please follow the link below: https://www.hawaii.edu/myuhinfo/timetable/ Pause Video Jennifer Aniston ‘Feels so Fortunate and Blessed’ to Have Found an ‘Evolved Partner’ in Jim Curtis Wedding bells may soon be ringing for Jennifer Aniston! As Star previously reported, word among friends is that she and... Star Magazine | Celebrity News, Exclusives, Photos and Videos - Star ... How does a star work?

Final Thoughts

How do they form, live, and eventually die? Learn more about these distant objects and their major importance in the universe.