Skip to comments.Nine Exoplanets Discovered in Solar System's 'Twin'
Posted on 04/08/2012 12:09:45 PM PDT by BenLurkin
In 2010, a star 127 light-years away stunned the world -- it had become the largest star system beyond our own, playing host to five, possibly seven, alien worlds. Now, the star (called HD 10180) is back in the headlines; it may actually have nine exoplanets orbiting it.
Interestingly, HD 10180 is a yellow dwarf star very much like the sun, so this discovery has drawn many parallels with our own Solar System. It is a multi-planetary system surrounding a sun-like star. But it is also a very alien place with an assortment of worlds spread over wildly different orbits.
It is believed that one of HD 10180's exoplanets is small -- although astronomers only know the planets' masses, not their physical size or composition. The smallest world weighs-in at 1.4 times the mass of Earth, making it a "super-Earth."
When it was first revealed that HD 10180 was a multi-planetary system, astronomers of the European Southern Observatory (ESO) detected six exoplanets gravitationally "tugging" on their host star. Using the "radial velocity" exoplanet detection method, the astronomers watched the star's wobble to decipher up to seven worlds measuring between 1.4 to 65 times the mass of Earth.
Five exoplanets were found to be 12-to-25 times the mass of Earth -- "Neptune-like" masses -- while another was detected orbiting in the outermost reaches of the system with a mass of 65 Earth masses (a "Saturn-like" world), taking around 2,200 days to complete one orbit.
But now, in addition to verifying the signal of the small 1.4 Earth-mass world, there appears to be another two small alien worlds.
(Excerpt) Read more at news.discovery.com ...
Hopefully not repetitive info.... ping.
Thanks for the post; these are turning into exciting times with all the discoveries.
When I was born, there was zero proof of any exoplanets. Today, they are finding them faster than I can keep up. What an amazing time to be alive.
Kirk: Warp 5 now.
Scotty: Nay Cap’n, she'll no hold together that long at Warp 5.
I love these discoveries. It is simply amazing how technology has developed to the point we can identify the existence of planets at such an incredible distance!
It wouldn’t take that long at warp 5. And warp 5 is just below the cruise speed on the TOS Enterprise (warp 6).
Somewhere, Carl Sagan is smiling...
“According to the Star Trek episode writer’s guide for The Original Series, warp factors are converted to multiples of c with the cubic function , where w is the warp factor, is the velocity, and c is the speed of light. Accordingly, “warp 1” is equivalent to the speed of light, “warp 2” is 8 times the speed of light, “warp 3” is 27 times the speed of light, etc.” (Wikipedia)
Thus, warp 5 = 125 times the speed of light. Just over a year to travel 127 light years. (I know they messed with this formula for NG, and Voyager.)
The Enterprise maxed out at warp factor 6 (unless the plot called for higher speeds) — but, Scotty would have objected (he always under-promised, and over-delivered).
Next, you’ll be telling me that the Enterprise couldn’t have obliterated the Death Star. :-)
127 light-years is one long trek
If anyone is there, it won't be long now that they start getting our radio broadcasts. First voice broadcast was in 1906, but wireless Morse was used for 10 or so years before that. It will be 2033 before that first voice broadcast reaches there, again with Morse signals maybe 10 years sooner.
Somewhere in that solar system is a website very much like FR.
But you have to look at the monitor in a mirror in order to read what the SRepeerf are posting.
I read somewhere that radio signals turn into indistinguishable background noise at around 5 light years. Depressing, yes, but it makes sense. It also explains why we have never picked up any aritficial radio signals from space (unless we truly are alone, which just seems impossible).
Zefram Cochrane will be born next year.
BTW, have you seen the price of dilithium crystals these days! That’s another good reason to ease off the throtle captain.
I'm sure it's only a matter of time before astronomers reclassify one of them as an "ex-exo-planet".
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You take the slow boat - TOS Enterprise, I’ll take the fast boat - the Culture’s “Sleeper Service” with assist from a superlifter and be there in a day. We’ll keep the lights on ...
Good Lord those Star Trek ships are slow - Culture ships routinely do over 90 lights and hour ...
I wonder what they'll think of "The Village People"?
paging Dr. Alcubierre, paging Dr. Miguel Alcubierre.
I think it will be funny when in 200 years or so, everything accepted today as science fact will be demolished as foolish and dangerously stupid.
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