We know very a good deal about stars. Right after centuries of pointing telescopes at the night time sky, astronomers and amateurs alike can figure out essential attributes of any star, like its mass or its composition.
To determine a star’s mass, just seem it its orbital time period and do a bit of algebra. To determine what it’s made of, appear to the spectrum of gentle the star emits. But the 1 variable scientists haven’t really cracked nevertheless is time.
“The solar is the only star we know the age of,” says astronomer David Soderblom of the House Telescope