By the numbers

Space travel

$3,500: Cost of a zero-g space tumble in a modified Boeing 727

$30 million: Cost of a 10-day excursion in outer space on the Russian Soyuz

$15 million: Extra cost for a space walk on the Soyuz trip

$100 million: Cost of a trip to the space station and a jaunt around the moon

$53: Cost of watching a Cape Kennedy launch from a causeway 6 miles from the launch pad

Source: Discover Magazine