1 posted on
12/21/2010 3:23:43 PM PST by
Dallas59
To: Dallas59
2011 preview: Expect Earth's Twin Planet OMG! Does that mean there are two Obamas?
2 posted on
12/21/2010 3:30:20 PM PST by
moovova
(Don't let Obama spoil the word "hope" for you...)
To: Dallas59
Steven Vogt of the University of California, Santa Cruz, inhabits a “Goldilocks” zone
I bet he does
3 posted on
12/21/2010 3:32:47 PM PST by
Jolla
To: Dallas59
If Gliese has a composition similar to earth and is 3.1 to 4.3 times the mass of Earth, the gravity would be pretty enormous. If so, it would be very difficult for humans to exist there. There might be some human-like creatures there who would be much like Superman to us. I also assume that the term “mass” used here means just that.
5 posted on
12/21/2010 3:35:33 PM PST by
davisfh
(Islam is a mental illness with global social consequences)
To: Dallas59
Wouldn't one expect to find the Goldilocks Zone in the constellation Ursa Minor?
7 posted on
12/21/2010 3:38:19 PM PST by
mikrofon
(Polaris Bears)
To: Dallas59
this from wiki: "It is estimated that the average global equilibrium temperature (the temperature in the absence of atmospheric effects) of Gliese 581 g ranges from 209 to 228 K (−64 to −45 °C, or −84 to −49 °F) for Bond albedos (reflectivities) from 0.5 to 0.3 (with the latter being more characteristic of the inner Solar System). Adding an Earth-like greenhouse effect yields an average surface temperature in the range of 236 to 261 K (−37 to −12 °C, or −35 to 10 °F).[1][20] So it's like antarctica with MAYBE some small warm spots warm enough for liquid water here and there.
10 posted on
12/21/2010 3:49:50 PM PST by
mamelukesabre
(Si Vis Pacem Para Bellum (If you want peace prepare for war))
To: Dallas59
Nibiru???
18 posted on
12/21/2010 5:11:30 PM PST by
Chode
(American Hedonist - *DTOM* -ww- NO Pity for the LAZY)
To: Dallas59
Nibiru???
19 posted on
12/21/2010 5:11:44 PM PST by
Chode
(American Hedonist - *DTOM* -ww- NO Pity for the LAZY)
To: Dallas59; KevinDavis; annie laurie; garbageseeker; Knitting A Conundrum; Viking2002; ...
In 2010, one new exoplanet appeared every four days or so; by the end of the year, the total topped 500. But in September, a truly exceptional find punctuated this steady drumbeat of discovery: the first alien planet that could host life on its surface. Gliese 581 g...
Thanks Dallas59! The rate of new discovery will jump as new capabilities become operational, and new techniques are tried.
23 posted on
12/21/2010 5:45:11 PM PST by
SunkenCiv
(The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
To: Dallas59
2011 preview: Expect Earth's Twin Planet
25 posted on
12/21/2010 6:24:17 PM PST by
Vaquero
("an armed society is a polite society" Robert A. Heinlein.)
To: Dallas59
Gliese 581 g, spotted by a team led by Steven Vogt of the University of California, Santa Cruz, inhabits a "Goldilocks" zone around its host star, a band just warm enough to boast liquid water. Two words: FLARE STAR.
Anything living there is going to get toasted, because the planet is going to be tidally locked, the warm side facing a star that fires mass ejections and hard radiation all the time.
The cold side is gonna be frozen.
Earth is rare in the galaxy, maybe unique. And I say this after 400+ star systems with planets discovered in our galaxy, NONE anything like ours. Keep looking, though.
To: Dallas59
Anybody remember the formula they made up for Star Trek to explain why there were so many alternate Earths?
30 posted on
12/22/2010 11:20:40 PM PST by
mrreaganaut
("All theory is against freedom of the will; all experience for it." - Samuel Johnson)
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