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Eight new planets found in 'Goldilocks' zone
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Topic: Eight new planets found in 'Goldilocks' zone (Read 111 times)
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Sea Dragon
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Posts: 3038
Re: Eight new planets found in 'Goldilocks' zone
«
on:
January 09, 2015, 10:51:30 pm »
Kepler marks five years in space
Mar 07, 2014
(Phys.org) —Five years ago today, on March 6, 2009, NASA's Kepler Space Telescope rocketed into the night skies above Cape Canaveral Air Force Station in Florida to find planets around other stars, called ...
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Vignesh R P
1.5 / 5 (6) Jan 06, 2015
I really have a doubt for a long time. According to their observations, Kepler-438b is located 470 light-years and Kepler-442b is 1,100 light-years away from the earth. If we are observing the planet now, that means we are observing the planet which is 1,100 years ago, i.e., we are looking at the past. Then what would be the probability of life that exist in those planets? Or what is the major advantage of exploring those habitable planets? The life may be completely destroyed, if it was so.
Surly
5 / 5 (7) Jan 06, 2015
@Vignesh: Life on Earth has existed for ~3.8 billion years. If there is life on one of those planets, it is unlikely that it would go extinct in the relatively short period that light took to get here from there.
We can't make a very good estimate of how likely it is that life exists on those planets, because we don't know much about those planets except their size and location. To have more information, we'd need to use spectroscopy to see what their atmosphere is made of. That would give us evidence as to whether photosynthesis is happening there.
Kepler is too small to do spectroscopy on a planet's atmosphere. But the James Webb telescope (which should launch in 2018) should be able to.
Zenmaster
5 / 5 (2) Jan 06, 2015
@Surly: "Kepler is too small to do spectroscopy on a planet's atmosphere. But the James Webb telescope (which should launch in 2018) should be able to."
Isn't James Webb designed to detect wavelengths much longer than required to determine composition of planet atmospheres? Elements are in the visible range ~300-900nm correct?
Uncle Ira
4.3 / 5 (6) Jan 06, 2015
Or what is the major advantage of exploring those habitable planets? The life may be completely destroyed, if it was so.
@ Vignish-Skippy. How you are? I'm fine and dandy thanks.
Well I'm not the real scientist-Skippy so what I say about why probably doesn't count for much. But for ol Ira-Skippy (that's me) the major big advantage of exploring them is just to learn more about them. Because I know if it is interesting to me it's got to be really big interesting to the real scientist-Skippys. Maybe learning something about them will tell something more about us.
AlienOverlord
1 / 5 (6) Jan 06, 2015
What's the point? Say a lightyear equals one mile...Then the earth is one inch from the Sun and Pluto is six feet from the Sun. The closest star is four miles. The only possible way for us to get there without warp drive is if the area between solar systems run at a different time speed. So, my question is; when a star warps space, does it speed time up or slow it down?
michael_draut
3.2 / 5 (5) Jan 07, 2015
Other than just shear science satisfaction, practically speaking this all has little application for us earthlings. Why not ramp up and put as much energy into creating habitat on planets in our own solar system? Like Venus, Mars or our own Moon? Seems to be a waste of money.
ScottyB
4.2 / 5 (5) Jan 07, 2015
Seems to be a waste of money.
Finding out weather we are alone in the universe is a waste of money??? Okay then
CreepyD
not rated yet Jan 07, 2015
@AlienOverlord..
I believe Einstein's theory shows that as you approach the speed of light, time for those going that fast slows down.
To the point that if you were moving at 0.99c you would be able to travel to the edge of the visible universe within your lifetime.
Of course, getting to that speed is another matter entirely.
Torbjorn_Larsson_OM
5 / 5 (5) Jan 07, 2015
@Surly: "Kepler is too small to do spectroscopy on a planet's atmosphere. But the James Webb telescope (which should launch in 2018) should be able to."
As I remember it, unfortunately only on gas giants and quite close at that.
The plan is that, starting with TESS 2017-2019, find out close habitable terrestrial planets, then start to characterize atmospheres, starting with the 30 m telescopes that starts in the early 20's, on those around dwarfs (red and white) were the signal-to-noise ratio means it isn't as demanding.
@AlienLord, michael_draut: "What's the point?", "Seems to be a waste of money."
Assuming you aren't just trolling (a common troll plain) and are genuinely intersted in the science, let me point to the NASA papers that reserached if science is well spent money. It is, it has one of the best ROI there is.
The problem is that no one can predict what gives the R on I. But it is mitigated by that it is all reinforcing.
hurricane25
not rated yet Jan 07, 2015
What's the point? Say a lightyear equals one mile...Then the earth is one inch from the Sun and Pluto is six feet from the Sun. The closest star is four miles. The only possible way for us to get there without warp drive is if the area between solar systems run at a different time speed. So, my question is; when a star warps space, does it speed time up or slow it down?
Knowledge
The Abiity to understand our place
Possible future exploration.
Worth every cent! Science normally is. Oh'yess, you're one of those small government people that hate science and exploration.
michael_draut
1 / 5 (1) Jan 08, 2015
@hurricane25, @Torbjorn_Larsson_OM, @ScottyB
Knowledge
The Abiity to understand our place
Possible future exploration.
Worth every cent! Science normally is. Oh'yess, you're one of those small government people that hate science and exploration.
It is typical in the liberal academia not to acknowledge that there may just be other ventures that would be as useful if not more so, producing better understanding of our own planet and significantly more knowledge for existing generations to apply. Several of you must be Star Wars freaks salivating over your own personal agenda.
Why not look within our own solar system? Venus? Mars? Our own moon for God's sake! Colonizing them, Our oceans... quit chasing Darth Vader and do something that will be useful and practical. And yes, spending untold millions for what? More theory, more money? Shame on you...
Torbjorn_Larsson_OM
5 / 5 (2) Jan 08, 2015
@michael_draut: "Oh'yess, you're one of those small government people that hate science and exploration."
Did you even read my comment?
BTW, you comment is half loutish ("small"), half conspiracy theory ("government").
Besides that, you didn't respond to the reference (except by unsubstantiated handwaving).
I think we are done here, there is no ground for a further discussion on the usefulness of science and especially astrobiology. Meanwhile, astrobiology is enormously successful (exponential increase in found planets, ...) and enormously marketable. (See e.g. the new antibiotic that is just found, that will means billion less in costs and billions over the years in gained income. That is the use of science, and as per the ref astrobiology.)
Benni
1 / 5 (3) 5 hours ago
We've known for a long time there are other planets orbiting other stars, but please, save it (the repetitive announcements).......wake me up when they've discovered life on one of'em.
Benni
1 / 5 (2) 2 hours ago
We've known for a long time there are other planets orbiting other stars, but please, save it (the repetitive announcements).......wake me up when they've discovered life on one of'em.
Maggie, ira: I don't mean you ROCs, I'm referring to real life.
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