This Is Inside Card, I Call This: Cycle Of Life.

Hun Ahau, 11.2, Eleven Uruz

Andrew Chumbley

CO-ROTATING INTERACTION REGION: A co-rotating interaction region (CIR) hit Earth on March 8th, setting the stage for a possible G1-class geomagnetic storm. CIRs are transition zones between fast- and slow-moving streams of solar wind. They contain magnetic fields and shock waves akin to those of CMEs. 

HIGH INTEREST" REENTRY: In 1972, the Soviet Union's Kosmos 482 spacecraft was supposed to land on Venus. Instead, it's about to return to Earth. ETA: May 10th, give or take a few days.

"The reentry of the Kosmos 482 Descent Craft will not be your standard reentry," says satellite analyst Marco Langbroek, who has been tracking the object for years. "The Descent Craft was designed to survive entry through the dense atmosphere of Venus. It will therefore likely survive reentry into the Earth’s atmosphere intact and make a crash landing. This will therefore be a high-interest reentry."



A museum replica of Venera 8, launched just days before Kosmos 482. Credit: NASA

This spacecraft was part of the Soviet Union's sucessful Venera program to explore Venus. Between 1961 and 1984, thirteen Venera probes successfully entered Venus's atmosphere, with ten landing on the planet's surface. Kosmos 482, however, never left Earth. The upper stage of its rocket shut down prematurely, leaving it in a 206 x 9802 kilometer orbit that has been decaying ever since.

"With an orbital inclination of 52 degrees, the Kosmos 482 Descent Craft could come down anywhere between 52 degrees north and 52 degrees south latitude," says Langbroek. "This includes much of south and mid-latitude Europe and Asia, as well as the Americas, Africa and Australia. (An ocean landing is most likely.)"



Above: A picture of Venus from Kosmos 482's sister craft Venera 13 [more]

It is unlikely that the parachute system will work after more than 50 years in space, so this will be a crash landing. How bad will it be? Details of the descent craft have been lost to history. Langbroek believes it is about 1 meter in diameter with a mass of ~495 kg. It won't do major damage, but you wouldn't want to be standing where it lands.

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