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#11
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Pics of planets in other star systems???
dh@. wrote:
A friend recently told me that people now know of many planets in other star systems, and that they have excelent photos of them from the Hubble 2. One in particular is supposedly a lot like Earth but the size of Jupiter. I have nothing but doubts so far, and have not been able to find any. If there are some, can anyone post links to them? Many planets (around 400) are now known to exist in other solar systems, but nearly all are giants similar to Jupiter or larger. Most have been found by the "doppler wobble" method or by small dips in light caused by planetary transits. A few have been found by microlensing and a very small number by direct imaging as points of light. There is no "Hubble 2", it's still under construction on Earth (the James Webb Space Telescope). Some giant planets appear to have been detected optically or in infrared, orbiting around some young A-type stars, but they are seen as spots of light, not as "excellent images" and they are not Earthlike. I would need to check for details but I think there have been some detections of "superEarths" from microlensing and possibly from planetary transit observations. That is, the planets found appear to have masses only a few times that of Earth (e.g., about 5-10 times)and thus may be rocky rather than gaseous. Again, none of these yielded an image, only an "existence" result. There are various plans for a large and fairly expensive project to find terrestrial planets that involve space instruments (The NASA Terrestrial Planet Finder and the European Darwin Project) but economic problems mean these are either abandoned or postponed indefinitely while money is poured into various wars and bailouts of banks, General Motors, etc. There are some efforts aimed at examining known transiting giant planets for the presence of moons that might be Earthlike in size. It's a bit technical to describe, but would not produce an image, and as far as I know none have yet been found. In any case, if it's "the size of Jupiter" it won't be Earthlike. So your friend is wrong. Get him to reveal the source of his information. -- Mike Dworetsky (Remove pants sp*mbl*ck to reply) |
#12
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Pics of planets in other star systems???
"Nightcrawler" wrote in message ... "HVAC" wrote in message ... Next time you see him, beat the bag out of him and tell him he's a cocksucking liar. Has the holiday season got you down? No. I love the holiday season. If appears as if you are a bit more edgy of late. Ya, welll..... I've been too easy on the kooks lately and I thought they needed some shaking up. Since I have brought my show to alt.astronomy, you'll notice that the volume of posts is way down. That is my goal. Though, you are providing good filler in Saul's absence. LMJFAO |
#13
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Pics of planets in other star systems???
In uk.sci.astronomy dh@. wrote:
On Tue, 1 Dec 2009 17:26:22 -0000, "Androcles" wrote: dh@. wrote in message ... A friend recently told me that people now know of many planets in other star systems, and that they have excelent photos of them from the Hubble 2. One in particular is supposedly a lot like Earth but the size of Jupiter. I have nothing but doubts so far, and have not been able to find any. If there are some, can anyone post links to them? If there were pix available you'd see them in newspapers, on TV, all over the internet. I don't get any broadcast TV and don't read the papers, but figured I would have heard about it somewhere if it were true. The last time I looked into it was years ago and scientists were trying to determine how many planets the closest stars *might* have by studying the wobble of the star due to the gravitational influence of possible planets. AFAIK it hasn't gone any farther than that yet...or at least not much. There's also the occultation technique - detecting when a planet passes in front of the star and even when the star passes in front of a planet. Using the spectrum shift during an orbit, and the orbital period, scientists can calculate mass/density of the planet. I believe there have now been some measurements, through spectography, of atmospheric constituents of extrasolar planets. Catalog of extrasolar planets: http://www.planetary.org/exoplanets/list.php First picture of an extrasolar planet: http://www.msnbc.msn.com/id/27702538/ P.S: I've been enjoying being a member of The Planetary Society. Being able to contribute to the building of a private lightsail spacecraft has the little ten-year-old that still lives inside me very excited. Some societies like to talk about the future. These guys do stuff to arrange it. FoFP |
#14
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Pics of planets in other star systems???
In uk.sci.astronomy Androcles wrote:
http://www.planetary.org/news/2008/1...t_Planets.html Any cheapskate publication that refers to "scientists" is bull****ting, anthonybucklandALLspam. Yes, but the kind of bull****ters who will actually discover extrasolar planets: http://www.planetary.org/programs/projects/finds/ I'll take an ounce of their bull**** over a ton of your cynicism any day of the week. FoFP -- "The new theology demands respect not just for the person but for also his or her beliefs [...] The result is an auction of victimhood as every group attempts to outbid all others as the one feeling most offended." -- Bergens Tidende |
#15
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Pics of planets in other star systems???
"M Holmes" wrote in message ... In uk.sci.astronomy Androcles wrote: http://www.planetary.org/news/2008/1...t_Planets.html Any cheapskate publication that refers to "scientists" is bull****ting, anthonybucklandALLspam. Yes, but the kind of bull****ters who will actually discover extrasolar planets: http://www.planetary.org/programs/projects/finds/ I'll take an ounce of their bull**** over a ton of your cynicism any day of the week. FoFP -- "The new theology demands respect not just for the person but for also his or her beliefs [...] The result is an auction of victimhood as every group attempts to outbid all others as the one feeling most offended." -- Bergens Tidende Then you are a fool. I have the first extrasolar planet, discovered in 1987. By me. http://www.androcles01.pwp.blueyonde...lgol/Algol.htm Go and bid on your new theology. |
#16
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Pics of planets in other star systems???
"HVAC" wrote in message ... "Nightcrawler" wrote in message ... "HVAC" wrote in message ... Next time you see him, beat the bag out of him and tell him he's a cocksucking liar. Has the holiday season got you down? No. I love the holiday season. If appears as if you are a bit more edgy of late. Ya, welll..... I've been too easy on the kooks lately and I thought they needed some shaking up. Since I have brought my show to alt.astronomy, you'll notice that the volume of posts is way down. That is my goal. Though, you are providing good filler in Saul's absence. LMJFAO Speaking of Saul ... wtf is he ??? Stuffed himself with turkey and exploded, or did the War Piggy get him ???? |
#17
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 Saul's indisposed at the moment.

Saul's wife caught him cheating, so she beat him with his telescope. Saul got away on his tricycle but passed out and fell into a wash. |
#18
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Pics of planets in other star systems???
On Dec 2, 6:56*am, "Hagar" wrote:
"HVAC" wrote in message ... "Nightcrawler" wrote in message m... "HVAC" wrote in message ... Next time you see him, beat the bag out of him and tell him he's a cocksucking liar. Has the holiday season got you down? No. I love the holiday season. If appears as if you are a bit more edgy of late. Ya, welll..... I've been too easy on the kooks lately and I thought they needed some shaking up. Since I have brought my show to alt.astronomy, you'll notice that the volume of posts is way down. That is my goal. Though, you are providing good filler in Saul's absence. LMJFAO Speaking of Saul ... wtf is he ??? Stuffed himself with turkey and exploded, or did the War Piggy get him ???? Even spooks and moles get vacation, public funded of course. Warhol is looking after his lake of fire. ~ BG ~ BG |
#19
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Pics of planets in other star systems???
dh@. wrote:
A friend recently told me that people now know of many planets in other star systems, and that they have excelent photos of them from the Hubble 2. One in particular is supposedly a lot like Earth but the size of Jupiter. I have nothing but doubts so far, and have not been able to find any. If there are some, can anyone post links to them? There are now more than 400 known exoplanets. They weren't discovered with direct photography though. There is no Hubble 2, just the original Hubble. There are photographs of just a few of them now, maybe 3 out of the 400 known. Moreover, they are hardly "excellent" pictures, they are just dots in noisy photographs that moved after a time lapse. I think somebody may have already posted links for you. Something the size of Jupiter can't be anything like Earth. The upper limit of rocky planets is believed to be about 5 Earth masses. Jupiter is more like 300 Earth masses. Yousuf Khan |
#20
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Pics of planets in other star systems???
On Dec 1, 8:48*am, dh@. wrote:
A friend recently told me that people now know of many planets in other star systems, and that they have excelent photos of them from the Hubble 2. One in particular is supposedly a lot like Earth but the size of Jupiter. I have nothing but doubts so far, and have not been able to find any. If there are some, can anyone post links to them? We do have a resolved (sort of) image of the star Betelgeuse and the clouds of gas surrounding it. http://www.astronet.ru/db/xware/msg/...o_big.jpg.html Double-A |
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