Advances in all-sky surveys permit better visualization of the motions and dynamics inside our galaxy. And provide a better understanding of the evolution of the Milky Way. X-ray all-sky surveys As noted in this Space.com article, while “optical telescopes are much easier to design than X-ray telescopes … some of the most interesting objects in… Continue reading All-sky surveys – visualizing our dynamic galaxy
As I continue to ponder the spooky character of quantum physics (the 10^-n reality), this May 17, 2017, Space.com article addresses a question at the other end of the cosmic scale (the 10^n reality): How Many Stars Are In The Universe? So how do astronomers figure out how many stars are in the universe? The first sticky part is trying to… Continue reading How many stars?