Tiangong-1 lasted for twice its planned operational lifespan, but China can't control its descent.

Officials in China have conceded that Tiangong-1, the nation's first space station, has now settled into a decaying orbit. That's a sanitized, polite way of saying that the 18,753 pound craft is now hurtling towards Earth with no way of controlling its descent. The vessel is expected to begin burning up towards the end of 2017, although there's a couple of caveats that may not music to anyone's ears.

Reading between the lines, Popular Mechanics believes that China cannot anticipate where the burn up and re-entry will take place. The thinking goes that most controlled descents are planned to take place over the ocean, where there's little to no risk of harming people. An uncontrolled descent means that any debris that survives re-entry could strike a populated area, and if you've seen Armageddon, you know what that means.

At least Tiangong-1 has made its home nation proud up to this point, since it was only designed to operate for two years. It actually wound up being in operational orbit for 1,630 days -- more than twice the planned duration. Wu Ping, deputy director of China's manned space engineering office said that the station had "comprehensively fulfilled its historical mission." Let's just hope that all the components get turned into ash before they reach the ground.

Source:
courtesy of ENGADGET

by Daniel Cooper , @danielwcooper

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