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Space & Astronomy

Earth-like planet more than just 'noise'

March 8, 2015 | Comment icon 19 comments



Does planet GJ 581d exist or not ? Image Credit: PHL/UPR Arecibo/NASA
Scientists have argued that a nearby Earth-like world dismissed as 'noise' is actually a real planet.
Discovered in 2009, the planet GJ 581d was initially hailed as the first Earth-like extrasolar world to be located in its star's habitable zone, a factor that made it a prime candidate for finding life.

Not long afterwards however a separate study concluded that what the astronomer's had picked up was "stellar activity masquerading as planets" and that GJ 581d didn't actually exist at all. To confuse things even further, yet another study has now implied that the previous findings were wrong and that the planet really does exist.
"The existence (or not) of GJ 581d is significant because it was the first Earth-like planet discovered in the 'Goldilocks'-zone around another star and it is a benchmark case for the Doppler technique," said lead author Dr Guillem Anglada-Escudé.

"There are always discussions among scientists about the ways we interpret data but I'm confident that GJ 581d has been in orbit around Gliese 581 all along."

Source: UPI.com | Comments (19)


Recent comments on this story
Comment icon #10 Posted by Waspie_Dwarf 7 years ago
This is why I dislike scientists~ Me and a colleague wrote a paper about practical applications of dark energy back in the early 90's and all the "scientists" at the university of washington called us head cases because we did not hold a phd or a master in anything. I was not till the early 2000's after my friend got his masters and then paid homage to those old fart bags did they read it and go "oh neat ! mind if we rip this off and pass it off as our own" So let's get this straight. You wrote a paper about the practical uses of purely hypothetical, unproven, poorly understood, force? You fai... [More]
Comment icon #11 Posted by Wondering Soul 7 years ago
So let's get this straight. You wrote a paper about the practical uses of purely hypothetical, unproven, poorly understood, force? You failed to see that made it a worthless and meaningless paper (you might as well have written a paper on the practical uses of fairy dust). Now you don't like scientists because the scientists that were educated enough to know that your paper was worthless and meaningless pointed out to you that it was worthless and meaningless. Do you not see that it is YOU that has a problem with YOUR thinking, not scientists with theirs? Actually that last question is purely ... [More]
Comment icon #12 Posted by Merc14 7 years ago
From what you just said; then we should stop looking for the higgs boson. cause its fairy dust and everyone at cern are nut cases right ? This proves your complete lack of understanding and the sad part is you don't even realize why.
Comment icon #13 Posted by Waspie_Dwarf 7 years ago
From what you just said; then we should stop looking for the higgs boson. cause its fairy dust and everyone at cern are nut cases right ? I said no such thing. Once again you demonstrate an inability to think logically and rationally, a prerequisite for scientific understanding. There is a huge difference between trying to prove the existence of the hypothetical and claiming a practical use for the hypothetical. CERN are doing the former, you claim to have attempted the latter. If you can not see the difference then there is little hope of being able to have an intelligent conversation with yo... [More]
Comment icon #14 Posted by Wondering Soul 7 years ago
im not about to sit here on my day off going arguing with a person that clearly thinks they are right. im shocked that the "meaningless paper" me and my colleague wrote got us both jobs at the department of energy; but yeah magical fairy dust huh.... "worthless and meaningless paper" you wrote that not me; you started that flame war not me. last post in this area~
Comment icon #15 Posted by GreenmansGod 7 years ago
Ok, now that we got all that anti science nonsense out of the way. I got a stupid question. What do they mean by RV signal?
Comment icon #16 Posted by toast 7 years ago
Ok, now that we got all that anti science nonsense out of the way. I got a stupid question. What do they mean by RV signal? No stupid question. Look: http://en.wikipedia.org/wiki/Radial_velocity
Comment icon #17 Posted by GreenmansGod 7 years ago
Thanks, I tried to google it, but all I got were ads for land yachts.
Comment icon #18 Posted by Merc14 7 years ago
Thanks, I tried to google it, but all I got were ads for land yachts. I googled something space related with a very odd name (I'll remember sometime later and edit) and got links that would've set my security software off like a three alarm fire. Since then I add space or science after the word or term
Comment icon #19 Posted by Nefer-Ankhe 7 years ago
Ah I'm glad were all discussing about the possiblity of a Earth-like planet and not about how much we dislike scientists and their reliability!


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