New Windows Into The Cosmos Open
In the 19th century, scientists began discovering forms of light which were invisible to the naked eye: X-Rays, gamma rays, radio waves, microwaves, ultraviolet radiation, and infrared radiation. This had a major impact on astronomy, spawning the fields of infrared astronomy, radio astronomy, x-ray astronomy and finally gamma-ray astronomy. With the advent of spectroscopy it was proven that other stars were similar to our own sun, but with a range of temperatures, masses and sizes. The existence of our galaxy, the Milky Way, as a separate group of stars was only proven in the 20th century, along with the existence of "external" galaxies, and soon after, the expansion of the universe seen in the recession of most galaxies from us.
Read more about this topic: History Of Astronomy
Famous quotes containing the words windows, cosmos and/or open:
“I know some lonely houses off the road
A robber’d like the look of,—
Wooden barred,
And windows hanging low,”
—Emily Dickinson (1830–1886)
“The cosmos is about the smallest hole that a man can hide his head in.”
—Gilbert Keith Chesterton (1874–1936)
“Every woman who vacates a place in the teachers’ ranks and enters an unusual line of work, does two excellent things: she makes room for someone waiting for a place and helps to open a new vocation for herself and other women.”
—Frances E. Willard (1839–1898)