If you get away from city lights and witness the astonishing beauty of the night sky, most of the stars you can see are part of what is known as the “main sequence”. The few that aren’t part of it get ...

Pairing the known age of a white dwarf with the variable age of a main sequence star allows for more straightforward calculations of important parameters like the relationship between a star's age ...

leading to a state of equilibrium between gravitational collapse and the energy released during fusion Key fact In a main sequence star, hydrogen nuclei fuse together to form helium nuclei.