Titlebook: Contact with Alien Civilizations; Our Hopes and Fears Michael A. G. Michaud Book 2007 Springer-Verlag New York 2007 Alien.Aliens.Contact.I

degradation

Funktionsst?rungen des unteren Harntraktesgs across interplanetary distances. Now we know that such journeys are possible for a civilization at our level of technological development. We already have landed men on Earth’s moon and are planning to transport humans to Mars. We also know that the home planets of alien civilizations, if they ex

CONE

Hans Palmtag,Mark Goepel,Helmut Heidlerumption that technological civilizations do not expand beyond their home systems. The density of such civilizations was determined by the number of separate evolutions to life and intelligence. The equation did not take into account the possibility of interstellar exploration, interstellar colonizat

不愿

fatuity

Temporal-Lobe

牛馬之尿

978-1-4419-2107-9Springer-Verlag New York 2007

OREX

大氣層

察覺

颶風(fēng)

The Drake Equation, Take Three,umption that technological civilizations do not expand beyond their home systems. The density of such civilizations was determined by the number of separate evolutions to life and intelligence. The equation did not take into account the possibility of interstellar exploration, interstellar colonization, and direct contact.