Walkabout the Galaxy Posts

February 2, 2015 / Episodes

Josh, Addie and Tracy discuss the new SMAP (Soil Moisture Active Passive) satellite orbiting the Earth to map the changes in the moisture content in the upper 5 cm of soil around the world. In…

January 25, 2015 / Space Exploration

The ill-fated Beagle 2 Mars lander has been spotted by the Mars Reconnaissance Orbiter. The European Space Agency lander was successfully deployed from Mars Express orbiter in December 2003, but was not heard from after…

January 20, 2015 / Astrophysics

Josh, Addie and Tracy look ahead to the violent merger of supermassive black holes, the kind of event that would send out a large ripple of gravitational waves. These waves in space-time are a consequence…

January 14, 2015 / Episodes

We kick off the new year with a look back at the 2014 Fall meeting of the American Geophysical Union, featuring some 25,000 scientists and at least a handful of not-so-scientists. In episode 27, “Geoengineering…

November 18, 2014 / Episodes

Josh, Addie and Tracy welcome J├╝rgen Blum from the University of Braunschweig to discuss the exciting landing of the ESA Philae probe on the comet 67/P Churyomov-Gerasimenko. Philae, carried to the comet by the ESA…

November 4, 2014 / Astrophysics

This week’s episode is dedicated to the late Tom Magliozzi, one of the Car Talk brothers, whose infectious laughter livened up the airwaves for 25 years. In his honor, while discussing the discovery of “ghost…