Did aliens hijack the Voyager 2 space probe?
The Voyager 2 spacecraft has been speeding through the Solar System since 1977 and it鈥檚 seen a lot. Besides scooting past Jupiter, Saturn, Uranus and Neptune, the probe is now passing through the very limit of the heliosphere (called the heliopause) where it has begun to detect . The fact we have man-made objects exiting our star system is something that makes me goosebumpily.
For some perspective, Voyager 2 is so far away from Earth that it takes nearly 13 hours for commands sent from Earth to reach the probe.
After decades of travel, the NASA spacecraft continues to relay data back to us, making it one of the most profound and exciting space missions ever launched. Perhaps unsurprisingly, the aging explorer and the data received by NASA was rather garbled.
Naturally, the conspiracy theorists were out in force quickly pointing their sticky fingers at a possible encounter of the 3rd kind. How these 鈥榓liens鈥� found the probe in the first place and reprogrammed the transmission for it to appear corrupt Earth-side is beyond me, but according to an 鈥榚xpert鈥� in Germany, aliens (with an aptitude for reprogramming 30 year old Earth hardware, presumably) were obviously to blame.
One of the alien implication articles came from yet another classic 鈥檚cience鈥� post where they decided to take the word of a UFO expert (obviously a viable source) without any kind of counter-argument from a real expert of real science. (But this is the same publication that brought us other classics such as and , so it鈥檚 not too surprising.)
As I discussed in a recent CRI English radio debate with , the Voyager-alien implication is beyond funny; an entertaining sideline to poke fun at while NASA worked out what actually went wrong. But the big difference was that Chris and Xu had invited Seth Shostak (from the SETI Institute) and Douglas C. Lin (from the Kavli Institute for Astronomy and Astrophysics at Peking University) to join the fun. No UFO expert in sight, so the discussion was biased toward science and logic, not crazy talk.
(It was an awesome show by the way, .)
So what did happen to Voyager 2? It turns out that aliens are not required to answer this cosmic mystery.
On Tuesday, NASA announced that the wrong way. 鈥�A value in a single memory location was changed from a 0 to a 1,鈥� said JPL鈥檚 Veronia McGregor.
This glitch was thought to occur in the flight data system, which formats information for transmission to Earth. Should something go wonky in its memory allocation, the stuff it transmits can be turned into gibberish.
Although it isn鈥檛 known how this single bit was flipped (and we may never know, as Voyager 2 is an awful long way from home), it sounds very much like a cosmic ray event interfering with the onboard electronics. As cosmic rays are highly energetic charged particles, they can penetrate deep into computer systems, .
And this situation isn鈥檛 without precedent either. Recently, , causing the onboard computer to switch to 鈥渟afe mode.鈥� Also, Voyager 2 is beginning to exit the Sun鈥檚 outermost sphere of influence, where turbulence and confused magnetic fields rule. If I had to guess, I鈥檇 say 鈥� statistically-speaking 鈥� the probe might have a greater chance of being hit by the most energetic cosmic rays from deep space.
Just because something 鈥渕ysterious鈥� happens in space doesn鈥檛 mean aliens, the Illuminati or some half-baked doomsday phenomenon caused it. Before jumping to conclusions it would be nice if certain newspapers and UFO experts alike could look at the most likely explanation before pulling the alien card.
Alas, I suspect that some things will never change.
Ian O'Neill blogs at AstroEngine.
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