Photo credits (creative commons/flickr.com)
Cover: Michael Estigny, pg 2: Mr. Nixter, pg 3: Guiseppe Milo, pg 4: Nasa Goddard Space Flight Center, pg 5: Pancit Tinola, pg 7: Kirill Ignatyer
Cover: Michael Estigny, pg 2: Mr. Nixter, pg 3: Guiseppe Milo, pg 4: Nasa Goddard Space Flight Center, pg 5: Pancit Tinola, pg 7: Kirill Ignatyer