the.com/double stars
two suns, one gravity lease, zero personal space.
means a system of two stars bound together by gravity, orbiting a shared center of mass.
from from naked-eye observers noticing certain stars looked single but resolved into pairs through early telescopes, starting with mizar in the 1600s.
majority rulemost stars in the galaxy have a stellar companion
mizar firstfirst telescopic double star discovered, 1617
optical vs truesome pairs just line up, arent gravitationally bound at all
mass transferclose pairs can steal gas, triggering novae