Science Friday Folgen

Do You Have The ‘Right Stuff’ To Be An Astronaut? If you’ve ever considered being an astronaut, this might be your chance to land that dream job. This week, NASA opened applications for a new class of astronaut candidates. It’s a full-time position based in Houston, Texas, paying over $104,000 per year. Job duties would include “conducting operations in space, including on the International Space Station (ISS) and in the development and testing of future spacecraft” and “performing extravehicular activities (EVA) and robotics operations using the remote manipulator system.” Please note that “substantial travel” is required.  How do you know if you have the ‘right stuff’ to apply?  Frank Rubio, a NASA astronaut who completed the most recent previous selection program in 2017, joins Ira to talk about what other qualities are valuable in an astronaut applicant—and the training program for those accepted.   Could A “Marsquake” Knock Down Your House? On April 6, 2019, NASA’s InSight Mars lander recorded a sound researchers had been waiting to hear for months. To the untrained listener, it may sound like someone had turned up the volume on the hum of Martian wind. But NASA researchers could hear the likely first-ever “marsquake” recorded by the mission. NASA’s InSight carries a suite of instruments to help study what’s happening deep within the Martian surface, including an ultra-sensitive seismometer (SEIS) for detecting suspected quakes on Mars. Now closing in on the end of it’s two-year primary mission, NASA scientists are studying the seismic data they’ve collected so far, comparing it to the well-known tectonic activity of Earth, and mapping out what to explore from here. Deputy principal investigator Suzanne Smrekar joins Ira to answer our pressing marsquake questions. New Insight Into Whales On The Go  Like the seasonal migrations of birds, whales are roamers. Every year, they travel thousands of miles, from the warm waters of the equatorial regions for breeding to the colder polar waters for feeding. But how do they find their way so consistently and precisely every year?  New research in Current Biology this month adds more weight to one idea of how whales stay on course: Similar to birds, whales may detect the Earth’s magnetic field lines. Duke University graduate student Jesse Granger explains why a strong connection between gray whale strandings and solar activity could boost the magnetoreception theory. Other research in Marine Mammal Science explores why whales leave the food-rich waters of the Arctic and Antarctic at all. Marine ecologist Robert Pitman of Oregon State University’s Marine Mammal Center explains why this annual movement may not be about breeding—but rather, allowing their skin to molt and remain healthy.  Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.