General
The measured distance to the Andromeda Galaxy was doubled in 1953 when it was discovered that there is another, dimmer type of Cepheid. In the 1990s, measurements of both standard red giants as well as red clump stars from the Hipparcos satellite measurements were used to calibrate the Cepheid distances.
Read more about this topic: Andromeda Galaxy
Famous quotes containing the word general:
“If men would avoid that general language and general manner in which they strive to hide all that is peculiar and would say only what was uppermost in their own minds after their own individual manner, every man would be interesting.”
—Ralph Waldo Emerson (1803–1882)
“You have lived longer than I have and perhaps may have formed a different judgment on better grounds; but my observations do not enable me to say I think integrity the characteristic of wealth. In general I believe the decisions of the people, in a body, will be more honest and more disinterested than those of wealthy men.”
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