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Out-of-this-world galaxy

Post 821

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bbc.co.uk/news/science-environment-28421201

I want to live theresmiley - smileybloody cheaper on birthday gift buyingsmiley - laugh704 day yearsmiley - cool


Out-of-this-world galaxy

Post 822

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bbc.co.uk/news/science-environment-28640787


smiley - rofl THIS has all the markings of a Yorkshire project! smiley - laugh 10 million mile to catch 67psmiley - laugh


Out-of-this-world galaxy

Post 823

ITIWBS

A Kleopatra or Icarus class object, two snowballs stuck together with a neck of landslide debris between, only with a third object stuck on the kids of the larger.

If it calves (unlikely), has a potential to split to three.


Out-of-this-world galaxy

Post 824

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bis-space.com/2014/08/12/13468/techdemosat-1-captures-spectacular-views

http://www.youtube.com/watch?v=Oaq0CtesItg&feature=youtu.be

Hello earth! anyone at home ?


Out-of-this-world galaxy

Post 825

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.nasa.gov/ames/kepler/nasas-kepler-discovers-first-earth-size-planet-in-the-habitable-zone-of-another-star/#.U_ZuUKMXOJc


bags that plot of land near that riversmiley - laugh


Out-of-this-world galaxy

Post 826

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.nasa.gov/mission_pages/kepler/multimedia/images/Kepler_FOV_300.html
holding your hand out in front of you towards the sky and what it covers is what the "21 squares grid" kepler covers


Out-of-this-world galaxy

Post 827

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

"based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of sun-like stars and red dwarf stars within the Milky Way Galaxy. 11 billion of these estimated planets may be orbiting sun-like stars. The nearest such planet may be 12 light-years away"

and "they" say we're alone in the universe - HA! no chance, someone IS out theresmiley - smiley


Out-of-this-world galaxy

Post 828

ITIWBS

On Kepler 186f, with a gravity and low solar constant like its got, it may well have enough greenhouse potential to produce a truly Earthlike environment, though this depends also on its diurnal rate of rotation and whether it has an active magnetic field.

If it proves eventually to have a substantial moon (chance about 1 in 4 at my best guess), that nearly cinches the possibility of an active magnetic field.

Its solar constant on the other hand is less than that of Mars, but given a diurnal period only twice what its got,~49 hours, instead of ~24 1/2 hours, Mars could have a very Earth-like climate.

Evrn if Kepler 186f has a very slow diurnal period, comparable to those of Mercury, Venus, or the Moon, its solar constant is just barely low enough it may be below the tipping point where a low diurnal rate will precipitate a runaway greenhouse effect, with super-hurricane force winds sweeping around the planet becoming the main force distributing heat within the planetary environment.




On the effect of diurnal period on climate, its easy to understand.

The sun rises, temperature begins rising till mid-day, at which point it continues rise, though with a slowing rate of increase, till midafternoon, when the temperature begins to decline, slowly at first, then more rapidly with sunset, evening and nightfall, until it begins rising again with the first light of dawn, prior to sunrise.

So lets say one doubles the length of the day, plotting temperature rise (and fall) over a 48 hour day.*

All other things remaining equal, temperature will continue rising twice as long, at the same rate.

Correspondingly, it will also get colder in the more protracted night.




The principle has long been recognized in astronautics to the purpose of regulating temperature with satellites and other space vehicles so that they don't develop a potentially mechanically destructive temperature differential from the sunward side of the vehicle to its dark side.




At any rate, though I wouldn't be willing to bet that Kepler 186f is a life bearing terrestrial world, it definitely could be one, and that is something of a first!smiley - smiley




*Another thought problem, suppose the diuranal periods of the Earth and Moon were reversed.

What would climate conditions be like?


Out-of-this-world galaxy

Post 829

ITIWBS

I've already found a point on which I could refine the model above.

However, as a first essay, near enough for now.


Out-of-this-world galaxy

Post 830

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.esa.int/Our_Activities/Space_Science/Rosetta

apparently ? someone has said that if it were possible, it could float on the sea, as in it's make up so far detected ?


Out-of-this-world galaxy

Post 831

Galaxy Babe - eclectic editor

doesn't surprise me. If you could create a bathtub large enough, the planet Saturn would float.

smiley - planet

I still marvel that huge ships can float and aeroplanes can fly. smiley - zoom





Out-of-this-world galaxy

Post 832

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

I'm NOT amazed smiley - biggrinI float on cloud 9+ ALL the timesmiley - laugh


Out-of-this-world galaxy

Post 833

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bbc.co.uk/news/science-environment-28923010

interstellar sat nav smiley - laughsmiley - laughsmiley - laughturn left in 200 yards


Out-of-this-world galaxy

Post 834

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bbc.co.uk/news/science-environment-28927311

last one to leave the planet, please turn the lights off smiley - ok

smiley - biggrin


Out-of-this-world galaxy

Post 835

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

passed over New Zealand Sunday 7th Sept'

http://www.jpl.nasa.gov/asteroidwat...h/newsfeatures.cfm?release=2014-295



a bit "fell" offsmiley - laugh

http://www.bbc.co.uk/news/world-latin-america-29106843
smiley - laugh


Out-of-this-world galaxy

Post 836

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bbc.com/news/science-environment-29203284


http://en.wikipedia.org/wiki/The_Golden_Shot
NOW! if they use "The Golden Shot" tactics = left a bit! down a bit!
no problem in landing thensmiley - laughsmiley - laugh


Out-of-this-world galaxy

Post 837

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bbc.co.uk/news/science-environment-29368984

WE ARE NOT ALONE! smiley - laugh there's a lego kit out there to make more of us smiley - laughsmiley - laugh


Out-of-this-world galaxy

Post 838

Prof Animal Chaos.C.E.O..err! C.E.Idiot of H2G2 Fools Guild (Official).... A recipient of S.F.L and S.S.J.A.D.D...plus...S.N.A.F.U.

http://www.bbc.co.uk/news/science-environment-29343987

at that distancesmiley - biggrinno point in asking them to put the kettle on then


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