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JOHANNES KEPLER
JOHANNES KEPLER
Germany (1571 - 1630)
Johannes Kepler was a German mathematician, astronomer and astrologer, and key figure in the 17th century astronomical revolution. He is best known for his eponymous laws of planetary motion, codified by later astronomers based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy.
 

Enjoy these insightful and educational video clips drawn from over 70 hours of interviews with the world's leading figures in astronomy, shot during the filming of 400 Years of the Telescope.

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Wendy Freedman

Carolyn Herschel
Wendy Freedman - Carnegie Observatories

One of the first women astronomers was Carolyn Herschel, and she and her brother William Herschel in the 18th century, were the ones responsible for discovering the planet Uranus.

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Wendy Freedman

Edwin Hubble and the 100-inch telescope
Wendy Freedman - Carnegie Observatories

Edwin Hubble, here at the 100-inch telescope, took a series of photographic plates, large glass photographic plates, and he noticed that there were objects on the plates that were changing in their brightness – pinpoints of light not unlike other stars that he was photographing.

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Wendy Freedman

The Giant Magellan Telescope (GMT)
Wendy Freedman - Carnegie Observatories

The Giant Magellan Telescope is an ambitious new project following in Hale’s footsteps; in a sense it’s the next generation of optical telescopes on the ground.

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Wendy Freedman

Harvard college women
Wendy Freedman - Carnegie Observatories

There were a number of women who were working at the Harvard College Observatory at the turn of the last century, and at that time in fact women were not allowed to get PhDs in astronomy.

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Wendy Freedman

Henrietta Swan Leavitt
Wendy Freedman - Carnegie Observatories

Leavitt was studying objects we now know to be other galaxies very nearby to ours, the small and the large Magellanic cloud. And she discovered that there were objects that were changing in their brightness. This is now known as the Leavitt Period Luminosity Relation.

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Wendy Freedman

IYA greeting
Wendy Freedman - Carnegie Observatories

I would like to encourage you in this year of 2009, celebrating 400 years of the telescope, to take a moment and get away from city lights, get beyond the cities where many of us have grown up and have never had a chance to look at a dark night sky.

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Wendy Freedman

Mountaintop observing
Wendy Freedman - Carnegie Observatories

To obtain the best astronomical observations, it’s desirable to get to high altitude, get away from city lights, find a dry site where the atmosphere is very stable, and the reason for that of course is the clarity of an image that you get is improved if the atmosphere is not in a lot of turbulent motion.

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Wendy Freedman

An opportunity to use the Hubble Space Telescope (HST)
Wendy Freedman - Carnegie Observatories

I think personally I was very lucky to come along at just the right time in astronomy.

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Wendy Freedman

Why I became an astronomer
Wendy Freedman - Carnegie Observatories

I was interested in astronomy from a very early age, I was interested in all science from a very early age, but I can probably date exactly when I became hooked, and that was – I was probably seven years old.

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Suvi Gezari

Galaxies and black holes evolve together
Suvi Gezari - John Hopkins University

What’s exciting about super massive black holes is not just that they are in the centers of galaxies, but they seem to be connected with the formation and evolution of stars in the galaxy that they are sitting in.

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