APOD: The First Explorer (2018 Jan 31)

Comments and questions about the APOD on the main view screen.
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APOD Robot
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APOD: The First Explorer (2018 Jan 31)

Post by APOD Robot » Wed Jan 31, 2018 5:08 am

Image The First Explorer

Explanation: Sixty years ago, on January 31, 1958, the First Explorer was successfully launched by the Army Ballistic Missile Agency on a Jupiter-C rocket. Inaugurating the era of space exploration for the United States, Explorer I was a thirty pound satellite that carried instruments to measure temperatures, and micrometeorite impacts, along with an experiment designed by James A. Van Allen to measure the density of electrons and ions in space. The measurements made by Van Allen's experiment led to an unexpected and then startling discovery of two earth-encircling belts of high energy electrons and ions trapped in the magnetosphere. Now known as the Van Allen Radiation belts, the regions are located in the inner magnetosphere, beyond low Earth orbit. Explorer I ceased transmitting on February 28, 1958, but remained in orbit until March of 1970.

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Re: APOD: The First Explorer (2018 Jan 31)

Post by Boomer12k » Wed Jan 31, 2018 8:38 am

"Go, Baby, Go...."


Tried to get out this morning for the Super, Blue, Blood Lunar Eclipse.... overcast, going to sprinkle...welcome to Oregon...
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Last edited by Boomer12k on Wed Jan 31, 2018 12:35 pm, edited 1 time in total.

heehaw

Re: APOD: The First Explorer (2018 Jan 31)

Post by heehaw » Wed Jan 31, 2018 10:17 am

Fabulous! Thank you, APOD! Especially since one can download the movie, which is EXCELLENT. We are so incredibly lucky on this Earth, an oasis in an inconceivably vast cosmic desert!

RustyBrowninCda

Re: APOD: The First Explorer (2018 Jan 31)

Post by RustyBrowninCda » Wed Jan 31, 2018 2:31 pm

There's a wonderful anecdote I remember from many years ago: James Van Allen was giving his usual presentation on the college lecture circuit; during question period at the end he was asked by someone in the audience if he knew of any practical use for his Van Allen Radiation Belts. He thought for a second and and replied "well, I can tell you that I have been making a pretty good living off them for the last 15 years."

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Re: APOD: The First Explorer (2018 Jan 31)

Post by neufer » Wed Jan 31, 2018 2:36 pm

heehaw wrote:
We are so incredibly lucky on this Earth, an oasis in an inconceivably vast cosmic desert!
https://en.wikipedia.org/wiki/Deadly_Desert wrote:

<<The Deadly Desert is the magical desert that completely surrounds the fictional Land of Oz. On maps, the eastern quadrant of the desert is called the Deadly Desert, while the other three quadrants of desert are called the Shifting Sands, the Impassable Desert, and the Great Sandy Waste.

The desert was originally described as dangerous as any natural desert but no more. Indeed, in The Marvelous Land of Oz, Mombi tries to escape through it in the form of a griffin and Glinda chases her over the sands. In Ozma of Oz, it has become a magical desert with life-destroying sands and noxious fumes, a feature that remained constant through the rest of the series. Princess Ozma crosses the desert with her whole court by use of an infinitely unrolling carpet.

Anyone who sets foot into the sand of any of these deserts turns into sand themselves. The desert is used as a literary device to explain why Oz is essentially cut off from the rest of the world and the rest of Nonestica. However, it has been crossed several times by people from within Oz and from the outside world, with applied ingenuity, with magical assistance, or through unusual natural phenomena.

In the film Return to Oz, Dorothy Gale crosses the edge of the Desert by stepping upon stones. Later, the pack of Wheelers working for Mombi fail to get across the Deadly Desert in pursuit of Dorothy and the Gump, who cross the desert to reach the Nome King's mountain. Six of the Wheelers fall into the desert and are subsequently turned into sand and killed. The seven remaining Wheelers later return with Princess Mombi and cross the desert through the tunnel dug underneath the desert to reach the Nome King's mountain.>>
Art Neuendorffer

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Re: APOD: The First Explorer (2018 Jan 31)

Post by ta152h0 » Thu Feb 01, 2018 2:54 am

Poetry in motion ! or " the blooy thing actually works "
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Re: APOD: The First Explorer (2018 Jan 31)

Post by ta152h0 » Thu Feb 01, 2018 8:50 pm

I just saw a ocumentary on the F4 Phantom an it was revealed this airplane was use to chase rockets , an it reached 68000 feet. Is it possible to view these movies ??
Wolf Kotenberg