How long do stars live?
A massive star has more hydrogen but uses it far faster. Compare its energy supply with its power output, and distinguish a star’s age from the time it has left.
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#mass
Articles: 3
Why are some stars large and others small?
Stellar mass, radius and luminosity are different quantities. Compare the Sun, Sirius and Arcturus to understand mass, evolution and surface temperature.
What is mass, and how is it different from weight?
On the Moon, the same load presses less strongly on a support without losing mass. Separate kilograms, newtons, gravity and scale readings on Earth, the Moon and Mars.