5 results found for astronomy

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00:31:00

Cosmic Microwave Background Radiation and its Role in Cosmology

by Robert Wilson
Cosmic Microwave Background Radiation and its Role in Cosmology
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 2086 views
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In the first half of the 20th century other galaxies were recognized, their red shift measured and theories of the whole universe were developed. They included Big Bang and Steady State. Arno Penzias and I found the Cosmic Microwave Radiation (CMB) i....

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00:33:00

What We Learn When We Learn that the Universe is Accelerating

by Saul Perlmutter
What We Learn When We Learn that the Universe is Accelerating
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1444 views
Rating:

The 1998 discovery that the universe's expansion is accelerating was not only unexpected, but it also led to the postulation of a previously-unknown 'dark energy' forming almost three-quarters of the "stuff" of the universe. How was this discovery ma....

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01:05:00

The dark side of the universe

by Joe Silk
The dark side of the universe
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1691 views
Rating:

The emergence of cosmic structure is an outcome that has been studied by peering back through the mists of time to the remote depths of the universe as well as by deciphering the fossil structure of nearby galaxies. One of the greatest mysteries in t....

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01:00:00

Seeing the invisible: observing the dark side of the universe

by Sarah Bridle
Seeing the invisible: observing the dark side of the universe
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 5684 views
Rating:

It seems that most of the universe is made up of mysterious ingredients which we cannot see directly. Dr Bridle describes in pictures 'gravitational lensing', the bending of light by gravity, which is predicted by Einstein's General Relativity. Dr Br....

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00:59:00

Optical (Electronic) Spectra From Space

by Harry Kroto
Optical (Electronic) Spectra From Space
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1896 views
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Optical (electronic) spectra from space: comets. The detection of the pulsar in the Crab Nebula. The Three Degree Background. The detection by spectroscopy of the birth of stars.

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