[__ Science __ ] Are We Ready for a Conversation with ET?

[AIG.com]

How should we communicate with extraterrestrials if we make direct contact with some distant species? This was discussed during an event sponsored by Harvard.

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[Who Me]

Scientific requirements for life on a planet:-
These are just a few of the things you need in order to get a planet that supports life.

Here are a few of the more well-known ones:

• a solar system with a single massive Sun than can serve as a long-lived, stable source of energy
• a terrestrial planet (non-gaseous)
• the planet must be the right distance from the sun in order to preserve liquid water at the surface – if it’s too close, the water is burnt off in a runaway greenhouse effect, if it’s too far, the water is permanently frozen in a runaway glaciation
• the solar system must be placed at the right place in the galaxy – not too near dangerous radiation, but close enough to other stars to be able to absorb heavy elements after neighboring stars die
• a moon of sufficient mass to stabilize the tilt of the planet’s rotation
• plate tectonics
• an oxygen-rich atmosphere
• a sweeper planet to deflect comets, etc.
• planetary neighbors must have non-eccentric orbits

read more @

New study: model of 700 quintillion terrestrial exoplanets suggests Earth is special

This is from Scientific American. (H/T William) Excerpt: More than 400 years ago Renaissance scientist Nicolaus Copernicus reduced us to near nothingness by showing that our planet is not the cente…

winteryknight.com

Spoiler alert.
No planet found so far meets all of the above, so the current facts are, no e.t.

 

[Edward]

Short thread, lol.