This is an easy listening astronomy podcast that talks about much of the stuff we see in game and puts it in a wider context. Kind of like Power Play, but for explorers 
It's fun to listen to while you are out scanning these objects in the deep black. If you go to gamer or sci-fi conventions, you might even recognize the Astrophysicist Pamela Gay, who is a frequent panelist at places like Dragon Con. Great voice. They have hundreds of episodes over the last 7 years, but here are few that are very game related...
Interstellar Travel:
http://www.astronomycast.com/2009/07/ep-145-interstellar-travel/
How Galaxies Form:
http://www.astronomycast.com/2007/02/episode-25-the-story-of-galaxy-evolution/
The Universe Is Trying to Kill You (Phil Plait):
http://www.astronomycast.com/2014/05/ep-343-the-universe-is-trying-to-kill-you/
Milky Way Mysteries P1:
http://www.astronomycast.com/2010/03/ep-176-mysteries-of-the-milky-way-part-1/
Milky Way Mystery Part 2:
http://www.astronomycast.com/2010/03/ep-177-mysteries-of-the-milky-way-part-2/
Nebulae:
http://www.astronomycast.com/2007/07/episode-46-stellar-nurseries/
Neutron Stars & Black Holes:
http://www.astronomycast.com/2007/05/episode-38-neutron-stars-and-their-exotic-cousins
Stellar Populations:
http://www.astronomycast.com/2008/02/ep-75-stellar-populations/
Accretions Disks:
http://www.astronomycast.com/2013/07/ep-306-accretion-discs/
Planetary Collisions:
http://www.astronomycast.com/2014/02/ep-333-when-worlds-collide/
Sun Diving Comets:
http://www.astronomycast.com/2013/12/ep-324-sun-grazers/
Stellar Classification:
http://www.astronomycast.com/2011/04/ep-217-stellar-classification/
Aliens:
http://www.astronomycast.com/2012/10/ep-273-solutions-to-the-fermi-paradox/
It's fun to listen to while you are out scanning these objects in the deep black. If you go to gamer or sci-fi conventions, you might even recognize the Astrophysicist Pamela Gay, who is a frequent panelist at places like Dragon Con. Great voice. They have hundreds of episodes over the last 7 years, but here are few that are very game related...
Interstellar Travel:
http://www.astronomycast.com/2009/07/ep-145-interstellar-travel/
How Galaxies Form:
http://www.astronomycast.com/2007/02/episode-25-the-story-of-galaxy-evolution/
The Universe Is Trying to Kill You (Phil Plait):
http://www.astronomycast.com/2014/05/ep-343-the-universe-is-trying-to-kill-you/
Milky Way Mysteries P1:
http://www.astronomycast.com/2010/03/ep-176-mysteries-of-the-milky-way-part-1/
Milky Way Mystery Part 2:
http://www.astronomycast.com/2010/03/ep-177-mysteries-of-the-milky-way-part-2/
Nebulae:
http://www.astronomycast.com/2007/07/episode-46-stellar-nurseries/
Neutron Stars & Black Holes:
http://www.astronomycast.com/2007/05/episode-38-neutron-stars-and-their-exotic-cousins
Stellar Populations:
http://www.astronomycast.com/2008/02/ep-75-stellar-populations/
Accretions Disks:
http://www.astronomycast.com/2013/07/ep-306-accretion-discs/
Planetary Collisions:
http://www.astronomycast.com/2014/02/ep-333-when-worlds-collide/
Sun Diving Comets:
http://www.astronomycast.com/2013/12/ep-324-sun-grazers/
Stellar Classification:
http://www.astronomycast.com/2011/04/ep-217-stellar-classification/
Aliens:
http://www.astronomycast.com/2012/10/ep-273-solutions-to-the-fermi-paradox/