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Showing posts from 2015

Cultural Diversity: A Problem for Extraterrestrial Contact

What is the wisest method to approach an extraterrestrial civilization?

C U L T U R A L    C O N V E R G E N CE

If convergent evolution on Earth is an indication of what we might find in planets with conditions like ours, we can predict the existence of a species on a twin Earth with metacognition (self-awareness), an analog to the prefrontal cortex and manual dexterity. This article tries to predict how would an alien,"warp-capable" civilisation approach humanity if they found us. As it turns out, supposing they were not all that similar to us or possessed different kinds of intellect, all life as we know it, shares something primordial: the survival instinct, and intelligent life, most likely, survival logic. This last one is fundamental for the hypotheses presented here.

W H E N   W I L L  W E   '' P H I S I C A L L Y ''   M E E T   T H E M ?

Are we centuries or millennia away from building a ''faster'' than light spaceship? Consider the recent…

The Fascinating Worlds of the Milky Way

With over 100 billion Earth-like planets now thought to exist in the Milky Way, the possibilities for worlds that escape our imagination seem endless. These are some of the fascinating, naturally occurring and physically possible habitable worlds of our galaxy, some of which writers have imagined and others which scientists have predicted:

1. Rocheworlds
Two planets so close together they share a common atmosphere.

How? Ever seen that scene from The Time Machine movie (2002) in which the lunar demolitions set our Moon off orbit and is it approaches the Earth it starts breaking up? It disintegrates as a result of having reached the Roche limit: the point in which the Moon's gravity (83.3% less than Earth's) is no longer sufficient to make it hold itself together due our planet's stronger gravity exceeding that of the Moon, ripping it off.

However, in theory, if you had two planets with roughly the same gravity (same mass and density), their Roche limit would be sufficiently sma…