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20-Year-Old Military Weather Satellite Explodes In Orbit
schwit1 writes A 20-year-old U.S. military weather satellite apparently exploded for no obvious reason. The incident has put several dozen pieces of space junk into orbit. From the article: "A 20-year-old military weather satellite apparently exploded in orbit Feb. 3 following what the U.S. Air Force described as a sudden temperature spike. The “catastrophic event” produced 43 pieces of space debris, according to Air Force Space Command, which disclosed the loss of the satellite Feb. 27 in response to questions from SpaceNews. The satellite, Defense Meteorological Satellite Program Flight 13, was the oldest continuously operational satellite in the DMSP weather constellation."
The truth is the explosion came just after a software update.
Sources that want to remain anonymous confirmed the update included systemd.
Explosion after a measurable temperature hike sounds more like a laser or maser attack than a collision. With a collision, there would not be much to measure.
Ok, if the collision just severed some pipes or power or control lines, a temperature hike might also be part of the first consequence. But that would be boring.
Turns out those green laser pointers you get in the mail are a lot more powerful than you would think.
"There is more worth loving than we have strength to love." - Brian Jay Stanley
This was a test of laser weapons. Either the USA destroyed it or someone else did.
What no obvious reason? Either the batteries overheated and exploded (fuel and oxidizer packed close together and sitting for 20 years) or the fuel tank vapors exploded on their own (tends to happen with monopropellant--no need to additional oxidizers, just a random injection of energy). Russian rocket bodies used to explode in orbit from time to time from fuel vapors (undesired bipropellant mixing) until they were convinced to burn off all their spare fuel after they deployed their payload into its orbit.
The Russian politician was far from obscure, well known and very vocal as a matter of fact. He was also against Putin and Putin's nut job attempts at bringing back the Cold War. He was someone we like, not someone we'd want to kill.
Your conspiracy theory only makes sense if you know absolutely nothing at all about what's actually going on.
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Many satellites are hybrid solar+batteries. They have sun enough to run and charge, so in the shade, they run off batteries. Batteries fail, sometimes spectacularly. It's possible that there was a chemical reaction in the batteries that *caused*, not was the result of, the temperature spike. Then the battery failed, exploding.
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This satellite blew up at 1715 UTC, and since it was in a sun-synchronous polar orbit, local noon would have put that over the Americas (North, Central, or South). This satellite was sitting under the direct sun for 20 years. If the radiator cooling system failed, things could heat up and fail very quickly (there is no wind up there, remember).
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I miss the good old days, when you knew to blame everything on the Axis of Evil, and you could solve all our problems by bombing Iraq.
Sheesh, evil *and* a jerk. -- Jade
I doubt that, there are no sharks in space.
Oh, you are serious. Well, that was my first thought too. Either a laser weapon or a small particle of something (meteorite) smashed through it causing a catastrophic failure..
...telling us to stay the hell away from their base on Ceres.
We should retaliate by beaming Youtube comments at them.
Perhaps you could be more informative as to the problem? Why wouldn't a coherent microwave beam be every bit as effective as a laser? Or perhaps you simply didn't realize that masers are a real thing, and even predate lasers sufficiently that lasers were originally called "optical masers".
The only potential issue that I can think of is that, due to the longer wavelength, it would be difficult to focus a maser beam as tightly. Of course if you're happy to cook the whole satellite instead of burn a hole in it, then that's less of an issue.
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"A 1um laser fired out of a 1m aperture spreads to an 800m circle at an altitude of 800km"
You're off by a factor 1000. The divergence is about 1e-6 rad, which makes 0.8 m diameter at 800 km.
Now another issue is that satellites tend to be wrapped in gold-coated foil, which will reflect 99% of the light at 1 micrometer. It would be difficult to overheat the body of the satellite, although the solar panels might be damaged more easily.
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Your conspiracy theory only makes sense if you know absolutely nothing at all about what's actually going on.
That's the very best kind of conspiracy theory.
Faster! Faster! Faster would be better!
> Where was the satellite over geographically when it exploded?
The Earth.
Bark less. Wag more.
We may have just lost Space:
"The Kessler syndrome (also called the Kessler effect,[1][2] collisional cascading or ablation cascade), proposed by the NASA scientist Donald J. Kessler in 1978, is a scenario in which the density of objects in low Earth orbit (LEO) is high enough that collisions between objects could cause a cascade—each collision generating space debris which increases the likelihood of further collisions.[3] One implication is that the distribution of debris in orbit could render space exploration, and even the use of satellites, unfeasible for many generations.[3]"
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