TY  - GEN
AU  - Petersen, Carolyn Collins 
TI  - Astronomy 101	: from the Sun and Moon to wormholes and warp drive, key theories, discoveries and facts about the Universe
SN  - 9781440563591
PY  - 2013///	
CY  - Massachusetts
PB  - Adams media
KW  - Astronomy
ER  -