Astronomy Cast Ep. 522: Judging Age & Origins, part 1 – Earth Rocks

People always want to know how old everything is. And more specifically, they want to know how we know how old everything is. Well, here at Astronomy Cast, it’s our job to tell you now only what we know, but how we know what we know. And today we’ll begin a series on how we know how old everything is.

This is part one of a double episode.
Continue reading “Astronomy Cast Ep. 522: Judging Age & Origins, part 1 – Earth Rocks”

Weekly Space Hangout: Mar 13, 2019 – Dr. Luisa Rebull, Spitzer, and Star Formation

Hosts:
Fraser Cain (universetoday.com / @fcain)
Dr. Paul M. Sutter (pmsutter.com / @PaulMattSutter)
Dr. Kimberly Cartier (KimberlyCartier.org / @AstroKimCartier )
Dr. Morgan Rehnberg (MorganRehnberg.com / @MorganRehnberg & ChartYourWorld.org)

Dr. Luisa Rebull is an astronomer studying the properties of young stars, specifically evolution of rotation rates, disks, accretion rates, and Li abundances.

Continue reading “Weekly Space Hangout: Mar 13, 2019 – Dr. Luisa Rebull, Spitzer, and Star Formation”

Weekly Space Hangout: Mar 06, 2019 – Dr. Jeff Morgenthaler of the Planetary Science Institute

Hosts:
Dr. Morgan Rehnberg (MorganRehnberg.com / @MorganRehnberg & ChartYourWorld.org)
Dr. Kimberly Cartier (KimberlyCartier.org / @AstroKimCartier )
Dr. Pamela Gay (astronomycast.com / cosmoquest.org / @starstryder)

Jeff Morgenthaler, a senior scientist at the Planetary Science Institute, likes to think of himself as an experimental physicist whose laboratory opens to the sky. He has used a comet to measure the ionization lifetime of carbon, is using Io’s atmosphere as a probe of conditions in Jupiter’s magnetosphere and has constructed a small-aperture coronagraph to monitor measure Jupiter’s magnetospheric response to a large volcanic eruption on Io.

Continue reading “Weekly Space Hangout: Mar 06, 2019 – Dr. Jeff Morgenthaler of the Planetary Science Institute”