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Planet Observation
[ Planet Observation ]

·Astronomy: Saturn - Cassini-CASSINI AND HIS DISCOVERIES
·Astronomy: Saturn - CAPTURING SATURN
·Astronomy: Saturn
·Astronomy: Pluto - SEEING PLUTO
·Astronomy: Pluto - A MOON FOR PLUTO
·Astronomy: Pluto - Kuiper Belt-VISITOR FROM THE KUIPER BELT
·Astronomy: Pluto - Atmosphere-A LAYER OF GAS
·Astronomy: Pluto
·Astronomy: Planet Observation - ROCKS AND GAS
 

 
 
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INTRODUCTION TO ASTRONOMY

Only a few centuries ago, humans believed that Earth lay at the center of the cosmos and that the movements of heavenly bodies influenced human destinies. Now we know that our planet is but a minute part of a vast, constantly expanding universe that functions according to physical laws. But despite the technological advances that have allowed us to probe deep into space and to peer at galaxies far way, the universe still contains many more tantalizing mysteries yet to unfold.

We can all delight in the wonders of the night sky just by gazing upward, but greater enjoyment lies in knowing what to look for and how. The possibilities are inspiring. With the naked eye you can chart the wanderings of five of the planets; binoculars reveal Jupiter's four Galilean moons; and a telescope allows you to view distant galaxies.

This section also covers space exploration, from the early days of the space race to recent probes to the outer reaches of the solar system. Future exploration may well be answer the eternal question: Are we alone in the universe? Also, a huge shout out to those in the driving community. You can visit California Drivers Ed to discover more about those who have helped to make this possible.

 
 


 
  Window of Universe Window of Universe: Astronomy: Window of Universe - RADIO SIGNALS

RADIO SIGNALS

Longer-wavelength radio radiation reveals the processes occurring in gaseous nebulas, pulsars (spinning neutron stars), supernova remnants, and the active cores of distant galaxies. A radio telescope consists of an antenna, or antenna-array, connected to a receiver.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:49:06 CST (27 reads)
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  Window of Universe Window of Universe: Astronomy: Window of Universe - MILLIMETER WAVES

MILLIMETER WAVES

Millimeter and submillimeter telescopes address wavelengths corresponding to the lower temperatures. Optical lenses and mirrors are replaced with radio "mirrors"—radio dishes and receivers specifically tuned to receive short-wavelength radio signals.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:48:01 CST (26 reads)
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  Window of Universe Window of Universe: Astronomy: Window of Universe - THE LOW END

THE LOW END

The low-frequency, low-energy part of the spectrum is the domain of infrared, millimeter, and radio radiation.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:46:52 CST (22 reads)
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  Window of Universe Window of Universe: Astronomy: Window of Universe - Karl Jansky-KARL JANSKY'S STATIC FROM SPACE

KARL JANSKY'S STATIC FROM SPACE

In 1928, just a year after graduating from the University of Wisconsin, radio engineer Karl jansky (1905-50) accepted a job with Bell Telephone Laboratories. One of his first assignments was to track down the source of static that interfered with radio reception and ship-to-shore communications.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:46:01 CST (25 reads)
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  Window of Universe Window of Universe: Astronomy: Window of Universe - THE HIGH END

THE HIGH END

At the high-frequency, high-energy end of the spectrum, ultraviolet, X-ray, and gamma-ray radiation unveil the physical and chemical properties of objects that are incredibly hot and energetic.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:44:42 CST (21 reads)
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  Window of Universe Window of Universe: Astronomy: Window of Universe - OTHER WINDOWS ON THE UNIVERSE

OTHER WINDOWS ON THE UNIVERSE

There is a wealth of information about the physical universe that lies beyond the realm of visible light.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:43:54 CST (23 reads)
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  Voyager Voyager: Astronomy: Voyager - SOLAR PROBES

SOLAR PROBES

Ulysses, a joint mission by NASA and the European Space Agency (ESA) to study the Sun's environment and the solar wind, was launched in October 1990. This was the first time a spacecraft had been deliberately sent out of the ecliptic (the plane of the Solar System). After receiving a gravity assist from Jupiter in February 1992, the Ulysses probe went on to pass over the Sun's south pole in May 1994, then over its north pole a year later.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:42:54 CST (22 reads)
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  Voyager Voyager: Astronomy: Voyager - GALILEO

GALILEO

Intrigued by the Voyager findings at Jupiter, planetary scientists once again turned their attention toward that planet in the early 1980s. They designed a mission to orbit Jupiter and monitor the planet and its satellites for at least two years. In addition, a probe was to be deployed from the spacecraft into Jupiter's atmosphere.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:41:54 CST (26 reads)
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  Voyager Voyager: Astronomy: Voyager - COMET MISSIONS

COMET MISSIONS

Although the planets have usually been the destinations of space probes, minor members of the Solar System have not been ignored. In March 1986, several space probes passed near Bailey's Comet as it approached Earth.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:41:00 CST (21 reads)
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  Voyager Voyager: Astronomy: Voyager - VOYAGER AND BEYOND

VOYAGER AND BEYOND

In March 1979, Voyager 1 flew past Jupiter, sending back thousands of high-resolution photos of the cloud tops as well as intriguingly detailed images of the moons Callisto, Ganymede, Europa, and lo. Jupiter's gravity gave Voyager 1 the velocity needed to reach its ultimate destination, Saturn, in November 1980.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:40:06 CST (23 reads)
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  Old Articles

Saturday, December 11
· Astronomy: Venus - TRANSITS OF VENUS
· Astronomy: Venus - TELESCOPIC VENUS
· Astronomy: Venus - PENCIL AND CAMERA
· Astronomy: Venus - REPAVE THE PLANET
· Astronomy: Venus - THE LAVA PLANET
· Astronomy: Venus - Impact-HAVING AN IMPACT
· Astronomy: Venus - GREENHOUSE EFFECT
· Astronomy: Venus - THE EVENING STAR
· Astronomy: Venus - CONTINENTAL DIVIDE
· Astronomy: Venus
· Astronomy: Variable Star - VARIABLE TERMS
· Astronomy: Variable Star - CLASSES OF VARIABLES
· Astronomy: Variable Star - Magnitude-HOW BRIGHT
· Astronomy: Variable Star - OBSERVING VARIABLE STAR
· Astronomy: Uranus - SMASHING MOONS
· Astronomy: Uranus - Ring-SLIM RINGS
· Astronomy: Uranus - Orbit-ORBITING SIDEWAYS
· Astronomy: Uranus - Feature-WATCH THIS SPACE
· Astronomy: Uranus - A BIG BLUE WORLD
· Astronomy: Uranus
· Astronomy: Universe - Stars-THE STARS FROM EARTH
· Astronomy: Universe - INVISIBLE SIGNALS
· Astronomy: Universe - OUR VIEW OF THE UNIVERSE
· Astronomy: Through Telescope - ZOOMING IN
· Astronomy: Through Telescope - Moon-SHOOTING THE MOON
· Astronomy: Through Telescope - DEEP-SKY OBJECTS
· Astronomy: Through Telescope
· Astronomy: Telescope Type - Telescope for Children-BUYING FOR A CHILD
· Astronomy: Telescope Type - SCOPE SPEED
· Astronomy: Telescope Type - LENS OR MIRROR

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