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The World's Oldest Scientific Satellite is Still in Orbit (bbc.com)
walterbyrd writes: Nearly 60 years ago, the US Navy launched Vanguard-1 as a response to the Soviet Sputnik. Six decades on, it's still circling our planet. Conceived by the Naval Research Laboratory (NRL) in 1955, Vanguard was to be America's first satellite programme. The Vanguard system consisted of a three-stage rocket designed to launch a civilian scientific spacecraft. The rocket, satellite and an ambitious network of tracking stations would form part of the US contribution to the 1957-58 International Geophysical Year. This global collaboration of scientific research involved 67 nations, including both sides of the Iron Curtain.
Sputnik 1 was a scientific satellite. It was spherical so that atmospheric drag could be measured simply, without worrying about the spacecraft orientation, and the beeps at two frequencies made it possible to estimate the density of the ionosphere underneath it.
Why not? They used the signal to measure atmospheric characteristics and the ionosphere. Sure it only went "beep-beep-beep", but it was the first time something went "beep-beep-beep" up there and at least some science was conducted.
W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
As long as its orbit is high enough not to have atmospheric drag, and it doesn't hit something, of course it's still in orbit. Without atmospheric drag, orbits can last for centuries.
What would be more interesting is if it is still operational after all these years, like OSCAR 7.
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From Wikipedia,
"Sputnik burned up on 4 January 1958 while reentering Earth's atmosphere, after three months, 1440 completed orbits of the Earth,[1] and a distance travelled of about 70 million km (43 million mi).[10]"
Actually it was. The use of two radio frequencies in its transmission (20MHz and 40MHz) allowed the density of the ionosphere to be determined by receivers on the ground. The spherical shape was chosen so that it could be used to map the density of the upper atmosphere. It also provided information on the near space environment, as the internal temperature and pressure of the satellite could vary the duration of the beeps.
So yes, it was a scientific satellite, albeit a very basic one. It, of course, was also a big political F-U to the west, but that's realistically been the case for most things that have been done in the space age, especially the early part.
...si hoc legere nimium eruditionis habes...
The moon is not a scientific satellite.
Tired of my customary (Score:1)
Why is this strange? I mean, the whole point about being in orbit around Earth is that, unless you spend energy to get out of it, it keeps circling forever. Or am I overlooking something here?
My first program:
Hell Segmentation fault
go to http://home5.swipnet.se/~w-529... (by a Swede!) though website kind of 1990s.
mfwright@batnet.com
Sputnik 1, Sputnik 2 and Explorer 1 had all successfully launched into orbit before Vanguard 1C joined them.
My Uncle designed the communication and tracking systems for Vanguard (and later for NASA.)
It was cool going over to his house and into his basement office to look at the pictures of him with the Vanguard team, him with Wernher Von Braun, him with Eisenhower, him with the first astronauts, him with JFK, with LBJ, with John Glenn, etc. His retirement picture included a hand-drawn picture of him driving away in an old Model T with the Vanguard satellite bouncing in the back seat.
He was a really, really neat, unassuming guy who was fascinated with clocks. He must have had 200 of them in his basement of every shape and size.
Lived in a little town of 800 people.
I loved going to visit him as a kid.
.. They don't build them like they used to anymore..
sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
As a side note, the U.S. could have put up the first satellite https://en.wikipedia.org/wiki/Redstone_(rocket_family) but Eisenhower's foolish insistence on going with a "civilian" rocket prevented that.
Similarly, the U.S. could have put the first man in space, as back then space was considered 50 miles and the X-15 was capable of 50 miles altitude.
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It's actually something of a failure to not de-orbit it, because now it's a hazard. Space junk.
Forgivable perhaps because it was a feat just getting it up there, but still...
const int one = 65536; (Silvermoon, Texture.cs)
SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
That's right. It is a repository for nuclear waste.
. . . and a home to the folks from SHADO (chicks in tinfoil bikinis and purple hair), who are protecting us from an alien invasion: https://en.wikipedia.org/wiki/...
. . . and on the dark side of the Moon . . . we have the secret Nazi base: https://en.wikipedia.org/wiki/...
. . . and for shits and giggles: https://en.wikipedia.org/wiki/...
All in all, the Moon is a hoot and a half. So tell me Mr. Vice President Pence . . . why do you really want to go there . . . ? I'm guessing that it's NOT for the nuclear waste, chicks in tinfoil bikinis and purple hair or Nazis. I'm thinking that it's the last link . . .
Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
The really cool thing to mention about OSCAR 7 is it died in 1981 due to a short in the batteries. On June 21, 2002, Pat G3IOR heard some telemetry of W3OHI, which was OSCAR-7 transmitting on the 2 meter band. A follow up by one of the designers decoded the telemetry and found it to be authentic.
21 years of being silent in space was long enough for the short to open and the satellite booted when light hit it's solar array. The controllers came back online and it started transmitting.
That's simply cool.
I wouldn't say it was a foolish insistence and in many way letting Russia launch the first satellite was a brilliant move on the part of the Eisenhower administration. The most significant thing is that by having Russia send a satellite over America, it established the overflight principle that low-Earth orbit was a separate domain in international law similar to international waters in the oceans.
A legitimate concern was that if America sent a satellite up into space, that any time it traveled over the Soviet Union that it would be treated as invading Soviet airspace. In theory that could be considered a casus belli for some sort of significant response that would provoke military action.
You could say ditto for even sending a crew member in orbit.
As a result of the Soviet Union sending the first satellite and then sending Yuri Gagarin over the USA at orbital altitudes, the USSR had no justification and reason to be objecting if the USA did the same thing over the USSR. IMHO that was utterly brilliant.... and at the same time making the USSR prance around like some sort of victory was achieved when in fact they gave up a major diplomatic point of order in international law. It really didn't cost the USA much of anything other than temporary prestige that is largely irrelevant today... and was completely made up for anyway with Neil Armstrong's landing on the Moon.
The goal of the Eisenhower administration was to send spy satellites over the USSR, something that happened not too much longer after Sputnik. Unlike what happened with Gary Powers and the U-2 plane getting shot down over the USSR, they had no reason to complain about satellites.
How is that foolish that Eisenhower waited to have the Explorer satellite launch few weeks after Sputnik?
The even cooler thing was that someone had gone to the trouble of renewing its license during those 21 years. The Mode B uplink uses a band that is no longer allocated for satellite service, and that renewal is the reason that there is now an FCC waiver for using it.
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Yes, Sputnik was scientific, so calling Vanguard-1 the first scientific satellite is a little reaching.
Preening over who was first - 60 years later - when a mere 164 days separated their launches, seems like way too much vacuous national pride for a healthy perspective on anything.
actually, No. Sputnik 1, was NOT meant to be the scientific sat. Sputnik 3 was supposed to the original. Sputnik 1 was developed as a SIMPLE sat so that they could beat the Americans into space.
Fearing the U.S. would launch a satellite before the USSR, OKB-1 suggested the creation and launch of a satellite in April–May 1957, before the IGY began in July 1957. The new satellite would be simple, light (100 kg or 220 lb), and easy to construct, forgoing the complex, heavy scientific equipment in favour of a simple radio transmitter. On 15 February 1957 the Council of Ministers of the USSR approved this simple satellite, designated 'Object PS'.[20] This version allowed the satellite to be tracked visually by Earth-based observers, and it could transmit tracking signals to ground-based receiving stations.[20] The launch of two satellites, PS-1 and PS-2, with two R-7 rockets (8K71) was approved, provided that the R-7 completed at least two successful test flights.[20]
Sputnik 1 was NOT a scientific sat, and nor was the transmitter meant for science. The fact that something useful came from it, was simply a side thing. The transmitter was meant to tell the world, 'Look, we beat the Americans'.
In fact, all through the space race, almost 100% of the times was USSR finding out that America was about to do certain things so they would cut corners to beat us. That is why America made the moon and USSR/ Russia STILL has not put a boot print on the moon.
I prefer the "u" in honour as it seems to be missing these days.
The article is about the oldest scientific satellite still in orbit. I don't think Sputnik 1 is still up there.
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But are any of those three still in orbit? That was the jist of the article, oldest scientific satellite still in orbit.
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NO, it said "The World's Oldest Scientific Satellite is Still in Orbit"
It should have said "The World's Oldest US Scientific Satellite is Still in Orbit". Bit like celebrating the first American in space. Or the first American landing on the moon...
True about airspace, but not the real reason.
The real reason was simply that the soviet atom bombs were heavier than the US ones, and so they needed bigger rockets to launch them. Those rockets could easily be modified for space. And the US certainly did not wait for Gagarin to launch, they simply did not have any rockets big enough.
It's difficult to estimate the general idioticity of a person from a single comment, but even idiots can be occasionally right, and he's spot on in this matter regardless of whether he's actually an idiot or not. Sputnik 3 was not actually a "later satellite", they started building it first. *Then*, they started building Sputnik 1 to beat US to space since Sputnik 3 wasn't finished yet, *then*, they launched Sputnik 3.
Ezekiel 23:20
So the US was the first to invent the nanosat! ;)
Ezekiel 23:20
I'm pretty sure that launch got them plenty of science points to unlock several nodes in the tech tree.
By that definition, "The World's Oldest Scientific Satellite is Still in Orbit" is always, meaninglessly, true until there is literally no scientific satellite left at all.
CLI paste? paste.pr0.tips!
meh, that is the same AC that chases me around. I just ignore him.
The fact is, that when you are quoting something that backs it up, you would think that s?he would simply shut up, but s?he really never does.
But even then, he is truly an idiot since wiki/I said that it was NOT a science based sat, but simply one to announce to the world.
And then he clains it was for practice building, which is not science either. So, that AC is a real idiot. Just ignore him.
I prefer the "u" in honour as it seems to be missing these days.
Ao-7 does not transmit telemetry since recovery. The transponder is active on a random basis whenever it is in sunlight, and the beacons are unmodulated.
As I recall, its telemetry has to be requested with a special command signal, which is kept confidential, and can I think it can cause unstable behavior or something. And it is constantly in sunlight most of the time, except during certain months of the year, because of its altitude and inclination.
The transponder mode is also not quite random when it stays in sunlight; it was designed to switch modes every 24 hours or so (or with a command), and darkness resets it, though I recall reading that the automatic mode switch can be a little unstable. But sure, it's random if you suddenly decide you want to make contact with it and don't have a recent history of when it last switched modes.
But really, in its current state, it seems like a perfect challenge for hams who want to do some satellite contacts. It is primitive and weak enough that you have to do some work to make use of it. So in that sense, it is doing exactly what it was put there for.
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Well, sort-of. The timing would change in a binary fashion if the temperature went either below or above a threshold. Same with the pressure - it was meant to indicate pressure loss (as it was gas-filled). So the temperature and pressure "measurement" were more of a failure analysis tool than a scientific instrument. But engineering at that level is still "science" IMHO.
W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.