Astronomy and cosmology
StarTalk: Neil deGrasse Tyson explains achieving orbit - video
StarTalk: why rockets don't fly straight up - video
StarTalk: Neil deGrasse Tyson explains the three levels of Earth orbit - video
COSMOS: The death of stars - video
Hubble's field guide to nebulae - video
The Hertzsprung-Russell diagram - worksheet
The Hertzsprung-Russell diagram - answers
Stellar evolution quiz - worksheet
Stellar evolution quiz - answers
Stars and their evolution - worksheet
Stars and their evolution - answers
Astronomically correct Twinkle Twinkle - video
Astronomically correct Twinkle Twinkle - worksheet
Astronomically correct Twinkle Twinkle - answers
Neil deGrasse Tyson on The Starry Night - video
Laniakea: our home supercluster - video
Brian Cox & Tim Minchin: The Galaxy Song - video
Intelligent life in our galaxy - notes
Life on other worlds: using the Drake equation - worksheet
Cosmology and the Big Bang - notes
Sloan Digital Sky Survey - video
The elements: forged in stars - video
Observing the universe quiz - worksheet
Observing the universe quiz - answers
Brian Cox: Lecture on the Universe - video
Brian Cox: Lecture on the Universe - worksheet
Brian Cox: Lecture on the Universe - answers
The changing universe quiz - worksheet
The changing universe quiz - answers
Big Bang breakdown - Science with Heen video
Big Bang breakdown - worksheet
Michelle Thaller: The Big Bang wasn't an explosion - video
Minute Physics: Science, religion, and the Big Bang - video
How the Universe Works: The Big Bang - video
How the Universe Works: The Big Bang - worksheet
How the Universe Works: The Big Bang - answers