View Full Version : Sputnik_1

10-04-2018, 08:15 AM

Sputnik 1 (/ˈspʊtnɪk/ or /ˈspʌtnɪk/; "Satellite-1", or "PS-1", Простейший Спутник-1 or Prosteyshiy Sputnik-1, "Elementary Satellite 1")[5] was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957, orbiting for three weeks before its batteries died, then silently for two more months before falling back into the atmosphere. It was a 58 cm (23 in) diameter polished metal sphere, with four external radio antennas to broadcast radio pulses. Its radio signal was easily detectable even by radio amateurs, and the 65 inclination and duration of its orbit made its flight path cover virtually the entire inhabited Earth. This surprise success precipitated the American Sputnik crisis and triggered the Space Race, a part of the Cold War. The launch ushered in new political, military, technological, and scientific developments.

Sputnik_1 (LINK) (https://en.m.wikipedia.org/wiki/Sputnik_1)

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Ian McColgin
10-04-2018, 02:54 PM
I was nine. Dad and I went out that first night to observe it.

Dad was building the apparatus for his dissertation experiment "Movement Thresholds in Periferal Vision." To eliminate variables, he wanted to be able to position instruments at a fixed distance from the subjects eyes with the only variable being angle from a fixed attention point. A flat black hemisphere. He made it by fiberglassing a weather balloon and, honoring the Russians, named it "Hemisput".

https://scontent.fbos1-1.fna.fbcdn.net/v/t31.0-8/20157977_10209756127195024_8237674647324826575_o.j pg?_nc_cat=106&oh=0c7dbbb260732e0e08f030a6547ca858&oe=5C5A4DE3

10-04-2018, 05:47 PM
I remember seeing it and hearing the signal on short wave radio.

Ian McColgin
10-04-2018, 07:42 PM
Ah the short wave. I was only nine - no ham license - but our school shop teacher had a ham station in the shop so we got to listen to it.

Jim Bow
10-04-2018, 07:46 PM
Wow, you guys!
I was 11. Neighbor tuned it in on his Zenith TransOceanic.
At school, one of the nuns was convinced it was evil incarnate.