Galaxies and Cosmology



This course will prove to be an introduction to galaxies and cosmology. The course is divided into three subparts. The first is about the basics we have already covered in stellar astrophysics. The second is a short introduction to galaxies, their types, AGNs,etc. The third and last pdf will skim through introductory cosmology covering the basic topics ofredshift, age of universe,etc. The pdf are available here: Introduction to Galaxies


Galactic and Extragalactic Astronomy




INTERSTELLAR



The Hon. Francis Gillette, in a speech in Hartford, Conn., in 1871, said that there was "in Connecticut, on an average, one liquor shop to every forty voters, and three to every Christian church. In this city, as stated in the _Hartford Times_, recently, we have five hundred liquor shops, and one million eight hundred and twenty-five thousand dollars were, last year, paid for intoxicating drinks. A cry, an appeal, came to me from the city, a few days since, after this wise: 'Our young men are going to destruction, and we want your influence, counsel, and prayers, to help save them.'"

In New London, report says, the young men are falling into drinking habits as never before. So in New Haven, Bridgeport, and the other cities and large places of the state.

"The pulse of a person in health beats about seventy strokes a minute, and the ordinary term of life is about seventy years. In these seventy years, the pulse of a temperate person beats two billion five hundred and seventy-four million four hundred and forty thousand times. If no actual disorganization should happen, a drunken person might live until his pulse beat this number of times; but by the constant stimulus of ardent spirits, or by pulse-quickening food, or tobacco, the pulse becomes greatly accelerated, and the two billion five hundred and seventy-four million four hundred and forty thousand pulsations are performed in little more than half the ordinary term of human life, and life goes out in instead of seventy. This application of life."until his pulse beat this number of times; but by the constant stimulus of ardent spirits, or by pulse-quickening food, or tobacco, the pulse becomes greatly accelerated, and the two billion five hundred and seventy-four million four hundred and forty thousand pulsations are performed in little more than half the ordinary term of human life, and life goes out in instead of seventy. This application of life."


PLANETS



The Hon. Francis Gillette, in a speech in Hartford, Conn., in 1871, said that there was "in Connecticut, on an average, one liquor shop to every forty voters, and three to every Christian church. In this city, as stated in the _Hartford Times_, recently, we have five hundred liquor shops, and one million eight hundred and twenty-five thousand dollars were, last year, paid for intoxicating drinks. A cry, an appeal, came to me from the city, a few days since, after this wise: 'Our young men are going to destruction, and we want your influence, counsel, and prayers, to help save them.'"

In New London, report says, the young men are falling into drinking habits as never before. So in New Haven, Bridgeport, and the other cities and large places of the state.

"The pulse of a person in health beats about seventy strokes a minute, and the ordinary term of life is about seventy years. In these seventy years, the pulse of a temperate person beats two billion five hundred and seventy-four million four hundred and forty thousand times. If no actual disorganization should happen, a drunken person might live until his pulse beat this number of times; but by the constant stimulus of ardent spirits, or by pulse-quickening food, or tobacco, the pulse becomes greatly accelerated, and the two billion five hundred and seventy-four million four hundred and forty thousand pulsations are performed in little more than half the ordinary term of human life, and life goes out in instead of seventy. This application of life." seventy-four million four hundred and forty thousand times. If no actual disorganization should happen, a drunken person might live until his pulse beat this number of times; but by the constant stimulus of ardent spirits, or by pulse-quickening food, or tobacco, the pulse becomes greatly accelerated, and the two billion five hundred and seventy-four million four hundred and forty thousand pulsations are performed in little more "


STELLAR



The Hon. Francis Gillette, in a speech in Hartford, Conn., in 1871, said that there was "in Connecticut, on an average, one liquor shop to every forty voters, and three to every Christian church. In this city, as stated in the _Hartford Times_, recently, we have five hundred liquor shops, and one million eight hundred and twenty-five thousand dollars were, last year, paid for intoxicating drinks. A cry, an appeal, came to me from the city, a few days since, after this wise: 'Our young men are going to destruction, and we want your influence, counsel, and prayers, to help save them.'"

In New London, report says, the young men are falling into drinking habits as never before. So in New Haven, Bridgeport, and the other cities and large places of the state.

"The pulse of a person in health beats about seventy strokes a minute, and the ordinary term of life is about seventy years. In these seventy years, the pulse of a temperate person beats two billion five hundred and seventy-four million four hundred and forty thousand times. If no actual disorganization should happen, a drunken person might live until his pulse beat this number of times; but by the constant stimulus of ardent spirits, or by pulse-quickening food, or tobacco, the pulse becomes greatly accelerated, and the two billion five hundred and seventy-four million four hundred and forty thousand pulsations are performed in little more than half the ordinary term of human life, and life goes out in instead of seventy. This application of life." the pulse of a temperate person beats two billion five hundred and seventy-four million four hundred and forty thousand times. If no actual disorganization should happen, a drunken person might live until his pulse beat this number of times; but by the constant stimulus of ardent spirits, or by pulse-quickening food, or tobacco, the pulse becomes greatly accelerated, and the two billion five hundred and seventy-four million

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