Answer:
Identifying elements in astronomical objects using their spectra. Measuring the spectrum of light from a star can tell astronomers what the star is made up of. Since each element emits or absorbs light only at a particular wavelength astronomers can identify what element are in the stars from the lines in their spectra.
Help with what they are doing like set up a microscope. and i want to be a scientist
The correct answer is <span>10,000 yBP.</span>
Because D is highlighted so it's correct don't argue, you don't need to know
