The Earth’s magnetic field can really mess up your run. One minute your Garmin is spitting out your pace, the next it’s recalculating. You look again, it’s still freakin’ recalculating.
While a blank spot in workout data is one thing, a city’s power grid is another. When our magnetic field is disrupted by electric currents, for example, the reliability of GPS devices and radio transmissions, not to mention multi-billion-dollar satellites, can be thrown for a loop. A solar storm in 1989, for example, plunged a Canadian province into darkness for nine hours. But what exactly is at play up there?
Last year, a group of BU students landed the opportunity to find out. In 2017, NASA plans to launch a BU-developed satellite into orbit. That satellite will deploy another eight satellites (imagine a toaster deploying toast). The plan: to study changes in Earth’s magnetic field caused by space weather. This is a first for the eight-year-old BU Student-satellite for Applications and Training (BUSAT) group, which brings together undergrads, graduate students, and professors to design and operate small satellites.
“The entire idea of cube satellites,” says Osi Van Dessel (ENG’16), “is to shrink everything that a big satellite does and fit it onto a little board, so it doesn’t cost as much to get it up into space.”
Unlike the behemoths one usually pictures, the BUSAT minis are the size of DVD boxes. A NASA mule satellite will drop them roughly 280 miles above the Earth. Traveling at a speed of six miles per second, each one will measure variations in electrical currents flowing in and out of the upper atmosphere and relay the data back to NASA scientists on Earth.
Which will, among other things, we hope, lead to a cure for the Garmin hiccups.