Alexa's just a postdoc trying to understand the dynamics of the Earth's radiation belts. Currently she works at Dartmouth College and NASA's Goddard Space Flight Center on the Balloon Array for Radiation belt Relativistic Electron Loss, BARREL. They fly balloons into the stratosphere near the poles in order to observe particles being lost from the Earth's radiation belts.
(Taken from the NerdNite East Bay bio)
Alexa is a prime example of what happens when you go to college in MN to take up space. She became a space physicist, and because she got her PhD in Oz, some times says x, y, zed instead of x, y, zee. When not having way too animated discussions about plasma waves, she teaches figure skating… which also happens to have a lot of physics involved in it.
Follow her on twitter @PlasmaNerd or find her over at her website http://alexahalford.weebly.com
Augsburg First Decade Award 2013, Dartmouth Young Visiting Scientist 2012 - 2013