Space probe



Luna 1 (pictured left) wasn’t the first space probe to be built, but it was the first to successfully leave a geocentric orbit — the key criterion for classifying one today. The probe was built as part of the USSR’s Luna programme in 1959 and paved the way for a series of other Luna probes that would explore the Moon in unprecedented detail. Today, we have created space probes that are so advanced they can image alien worlds in high definition and travel to the farthest reaches of our Solar System and beyond.