Is Earth As An ‘Interesting’ Planet to a Alien Civilization?
The ideal ‘Earth 2.0’ will be an Earth-sized, Earth-mass planet at a similar Earth-Sun distance from… [+] NASA Ames/JPL-Cal-tech/T. Pyle All across the Universe, trillions of galaxies can be seen, with each one typically containing billions and billions of stars. Here on Earth, life not only arose, thrived, and became complex and differentiated, but …