Ga pingin @mBoong? nTe ga salah kutip? --- In [email protected], "sunny" <am...@...> wrote: > > > Allah menjanjikan kalau mati syahid dihadiahkan 72 bidadari. Bukankah begitu? > > ----- Original Message ----- > From: ndeboost > To: [email protected] > Sent: Thursday, September 30, 2010 1:16 AM > Subject: [proletar] Re: Scientists find potentially habitable planet near Ear > > > > Dingin di Swedia @mBoong? Atau kesepian? Di Swedia kurang banyak > bidadari > yang representative ya? > > Rupanya nT kepingin lihat bidadari ya beneran? > Kalau demikian, nT meluk agama yang salah @mBoong > > --- In [email protected], "sunny" ambon@ wrote: > > > > Refleksi : Mungkin planet ini adalah tempat bersemayam bidadari nan > cantik-cantik, jadi bagi yang kesana tak usah repot. Semua service > tersedia. > > > > > http://www.gulf-times.com/site/topics/article.asp?cu_no=2&item_no=389074\ \ > &version=1&template_id=43&parent_id=19 > > > > > > > > Scientists find potentially habitable planet near Earth > > Publish Date: Thursday,30 September, 2010, at 12:19 PM > Doha Time > > > > > > AFP/Washington > > > > We had planets on both sides of the habitable zone - one > too hot and one too cold - and now we have one in the middle that's just > right > > US astronomers said yesterday they have discovered an > Earth-sized planet that they think might be habitable, orbiting a nearby > star, and believe there could be many more planets like it in space. > > > > The planet, found by astronomers at the University of > California, Santa Cruz, and the Carnegie Institution of Washington, is > orbiting in the middle of the "habitable zone" of the red dwarf star > Gliese 581, which means it could have water on its surface. > > > > Liquid water and an atmosphere are necessary for a planet to > possibly sustain life, even it it might not be a great place to live, > the scientists said. > > The scientists determined that the planet, which they have > called Gliese 581g, has a mass three to four times that of Earth and an > orbital period of just under 37 days. > > > > Its mass indicates that it is probably a rocky planet and has > enough gravity to hold on to an atmosphere, according to Steven Vogt, > professor of astronomy and astrophysics at the University of California, > Santa Cruz, and one of the leaders of the team that discovered the > planet. > > > > If Gliese 581g has a rocky composition similar to Earth's, its > diameter would be about 1.2 to 1.4 times that of the Earth, the > researchers said. The surface gravity would be about the same or > slightly higher than Earth's, so that a person could easily walk upright > on the planet, Vogt said. > > > > Gliese 581g was discovered by scientists working on the > Lick-Carnegie Exoplanet Survey, during 11 years of observing the red > dwarf star Gliese 581, which is only 20 light years from Earth. For > astronomers, eleven years of observation is considered a short time and > 20 light years, which is roughly 117.5tn miles, rather close. The sun is > around eight and a half light minutes from Earth. "The fact that we were > able to detect this planet so quickly and so nearby tells us that > planets like this must be really common," said Vogt. > > > > > > The planet is tidally locked to its star, meaning that one side > is always facing the star and basking in perpetual daylight, and the > other is in perpetual darkness because it faces away from the star. With > surface temperatures decreasing the further one goes toward the dark > side of the planet and increasing as one goes into the light side, the > most habitable part of the new planet would be the line between darkness > and light, which is known as the "terminator". > > > > The researchers estimate that the average surface temperature of > the planet would be between -24 and 10F (-31 to -12C). But actual > temperatures would range from "blazing hot on the side facing the star > to freezing cold on the dark side," they said.The findings, which will > be published in the Astrophysical Journal and posted online at > arXiv.org, "offer a very compelling case for a potentially habitable > planet," said Vogt. > > > > "Any emerging life forms on the new planet would have a wide > range of stable climates to choose from and to evolve around, depending > on their longitude," Vogt said. In their report, the scientists in fact > announce the discovery of two new planets around Gliese 581, bringing > the total number of known planets around this star to six. > > > > That is the most yet discovered in a planetary system other than > Earth's solar system. Like planet's in Earth's solar system, the planets > around Gliese 581 have nearly circular orbits. Two previously detected > planets around Gliese lie at the edges of the habitable zone, one on the > hot side and one on the cold side of the star, and are probably not > habitable.The newly discovered planet g, however, lies right in the > middle of the habitable zone. "We had planets on both sides of the > habitable zone - one too hot and one too cold - and now we have one in > the middle that's just right," Vogt said, recalling the porridge that > Goldilocks found in the children's story The Three Bears. > > > > > > Back to Article Homepage > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > [Non-text portions of this message have been removed] >
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