The worlds first artificial satellite sputnik ____ by the Soviet Union on October 4, 1957. It ____ four months later by the US satellite, Explorer 1. The race for space was on, and with it came a new way of looking at the Earth. The fires ariel photographs were taken a century earlier by a French hot air balloonist. Balloons were ____ to gather military intelligence during the US civil war and other attempts to view the ground ____ by attaching tiny cameras to kites and even pigeons. Jump forward to the end of the 20th century and thousands of satellites ____ the planet, many of them providing a steady stream of scientific data, along with views of the Earth that ____ of before. Satellite imagery has revolutionized our lives: images are regularly being brought to us from around the globe: it ____ us to produce accurate maps of the Earth and even to predict the weather. Over 6,500 satellites ____ to have been put into orbit since the beginning or satellite technology, of which only about 1000 ____ The rest are basically just space rubbish now.

ACET Perspectives advanced unit 4

by
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?