This fortnight: damage to the Arecibo telescope in Puerto Rico, a Mars sample return proposal and the final two Mercury flights.
Stephen and Jason are back to discuss the end of Cassini and Jim Bridenstine, who appears to be Trump's pick for NASA Administrator. After that, they journey into orbit with John Glenn and Scott Carpenter.
Stephen and Jason both witnessed the 2017 total solar eclipse. They recorded throughout the event and sat down to compare notes the next day.
This fortnight, 2014 MU69 comes into focus, SLS has a new paint job and Stephen and Jason talk about the two rockets used in Project Mercury and the first two crewed American spaceflights.
After going over some last-minute eclipse planning notes, Stephen and Jason start a new series looking at NASA's pre-shuttle crewed missions, starting with testing for Project Mercury and America's first astronauts.
Jason and Stephen are joined by Dr. Katie Mack, a theoretical astrophysicist working at the University of Melbourne on dark matter and the potential it has to change our understanding of the universe, physics and more.
There are a bunch of milestones to celebrate this week: Juno's been at Jupiter for a year, Stephen built his LEGO Saturn V and Pathfinder landed on Mars 20 years ago.
This fortnight, our intrepid explorers talk about NEEMO, newly-discovered exoplanets and the Parker Solar Probe.
Jason and Stephen discuss the 2016 film Hidden Figures.
This week, Jason and Stephen talk about lunar and solar eclipses in preparation of a total solar eclipse in North America coming up in August.