The Sun is a star and we could not live without it.
Stars tell direction
I d0nt kn0w
You have it in reverse. Scientific notation is useful for measuring stars.
A useful young man
parallax
Binary stars are very useful for determining the mass of the stars and thus any objects orbiting around them.
the same way knowledge of the stars was useful to sailors it let them figure out which way to go in order to get home.
Because the distance between stars is so great.
biology is useful in every one
giraffes useful to mankind ?
They are very useful to scientists because it helps them see stars and planets better
Many people believe that man's destiny is in the stars and some even think that man has come from the stars. It's difficult to say whether man's destiny is here or in the stars but there is always hope that there is more than what is seen.