TY - BOOK AU - SHARPE,Michael TI - Space: : The Ultimate Frontier SN - 978-1-84406-088-7 U1 - 520. PY - 2007/// CY - United Kingdom PB - TAJ Books KW - 0 KW - Grade 7-9 N2 - Human have always looked up into space and wondered what was out there. Astronomers have been able to track and predict the movements of celestial bodies for centuries, but it is only in the last 50 years that space trevel has become reality. ER -