506: It's not Aliens, Unless it's Aliens

AstronomyCast 171: Solar System Movements & Positions

10 Helmi 201036min

AstronomyCast 170: Coordinate Systems

2 Helmi 201035min

AstronomyCast 169: The Fermi Mission

1 Helmi 201031min

26 Tammi 201032min

We finally get organized enough deal with several listener questions: isn�t dark matter just regular stuff we can�t see? how can parts of the Universe be expanding faster than the speed of light? ...

18 Joulu 200629min