| Images from "Our Place in the Universe" |
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A spectacular example of gravitational lensing, predicted by Fritz Zwicky, can be seen as the arc-like pattern spread across the picture. It is an illustration caused by the gravitational field of the cluster of foreground galaxies called CL 0024+1654. This is a rich cluster of galaxies located 5 billion light-years from Earth, distinctive because of its richness, and its magnificent gravitational lens. Credit: HST and NASA.
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Aurora Borealis produced by electrons and protons streaming from the Sun producing billions of photons of light when they strike Earth's atmosphere. Credit: North Lights photo of the Year 2001 by Phil Hoffman, Canada.
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The Crab Nebula, the remains of a star that exploded in 1054 and was recorded by the Chinese Court Astronomer, who reported to the emperor that the light from the explosion was four times the light from Venus and visible during the day for 23 days. The present luminosity of the nebula, is equal to that of 100,000 times that of our Sun. Credit: European Southern Observatory.
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A stellar nursery known as the Orion Nebula whose glowing gas surrounds a nursery of hot young stars at the edge of an immense intersteller molecular cloud only 1500 light-years away. Credit and copyright: Robert Gendler.
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A star chart from Kepler's book "Stellar Nova" showing by the letter "N" at the foot of the man's figure the location of Kepler's supernova of 1604.
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