Optimization of Multi-Object Spectroscopy in Astronomy
Galaxies Collection of stars…millions and billions of stars Distances measured in light years – Distance light travels in 1 year –9.5 x 10 15 m (6 trillion.
The Big Bang, Galaxies, & Stars. Big Bang theory – Origin of the Universe Big Bang marks the inception of the universe Occurred about 13.7 billion years.
CHAPTER 28 STARS AND GALAXIES
