!!!Get Up Stand up Don't Give Up The Fight!!!

Note:

!!!Get Up Stand up Don't Give Up The Fight!!!

!!!Get Up Stand up Don't Give Up The Fight!!!

THE LOW END

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

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.

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.

OTHER WINDOWS ON THE UNIVERSE

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

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.

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.

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.

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.