By Seth Shostak, Senior Astronomer, Director of SETI Research
Originally published on HuffingtonPost.com
Expedia's galaxy-wide website must be offering Earth at a major discount. In one movie after another, aliens decide to pass up competing Milky Way attractions -- including neutron stars, antimatter clouds, hot Jupiters, and a 4 billion-trillion-trillion-ton central black hole -- in favor of our planet. The small speck of rock we inhabit is more popular with tourists than Disneyland.