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Planet Hunters Report Record-Breaking Discovery, Search for other habitable planets
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KLiK Send message Joined: 31 Mar 14 Posts: 1304 Credit: 22,994,597 RAC: 60 |
I'm afraid a lot of what is being reported as facts about exo-planets is more like educated guesswork. Well, you can see those from articles on NASA web site: - planet is probably stone based - super Earth might be stone or gas giant... All others scripts are not scientific...and tend to go a little (or more) to the Yellow press... ;) non-profit org. Play4Life in Zagreb, Croatia, EU |
Larry Monske Send message Joined: 17 Sep 05 Posts: 281 Credit: 554,328 RAC: 0 |
these planets are predicted planets that are so far away they are lost in the stars glare. Many are so hot they could never hold life. |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
these planets are predicted planets that are so far away they are lost in the stars glare. Many are so hot they could never hold life. +10 |
Jorge Send message Joined: 20 Nov 03 Posts: 37 Credit: 14,722 RAC: 0 |
7 lightyears = 66,224,900,000,000,000 meters 1 lightyear = 9.4607 x (10^15) = 9,460,700,000,000,000 meters traveling at 22,000mph (849,733,632 meters per day) we could send a craft to the area in 77,936,070.206057231826737911204626 days or simply 213,523.5 years. How fast would a spacecrat have to travel to make it there in a human lifetime? |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
7 lightyears = 66,224,900,000,000,000 meters Somewhere well beyond the speed of light. And if it returned to earth thousands of years would have passed. Bob DeWoody My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events. |
Jorge Send message Joined: 20 Nov 03 Posts: 37 Credit: 14,722 RAC: 0 |
Well, i did a bit of math to figure out a speed to which a craft would have to travel to reach a planet 25ly away, to make it in ~15 earth years. 15 years = 131,487 hours 25 ly = 146,965,000,000,000 miles we would need to travel 1,117,715,059.2834272589685672347837 mph to make it in 15 years without hitting anything. Would anything survive at that speed. We would need to build a multi stage rocket in space, launch it from space (away from gravity), and figure out a way to slow it down so we dont fly by the planet. Probably by a rocket stage or two. Not to mention two mega radios, one on earth, one on the rocket, so we could communicate with it. It's doable, lets get a kickstarter going to fund it and have it powered by model rocket engines, hey thrust is thrust and they are cheep, well most are :) lol |
rob smith Send message Joined: 7 Mar 03 Posts: 22160 Credit: 416,307,556 RAC: 380 |
7 lightyears = 66,224,900,000,000,000 meters A human lifetime = let's say a "human working life time" of 50 years. So that means each half of a round trip needs to take 25 years. Thus, making no allowances for acceleration and deceleration that is (7/25)C (Where C = speed of light). So putting in the figures we get our space craft needs to average 302,190,840km/h - which is cracking on in anyone's book, but not several times the speed of light, so doable, just needs a massive amount of energy to do it. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
That's 1.6 times the speed of light, not doable as of today. And still many hundreds of years on earth would have passed by the time the astronauts returned to earth. Bob DeWoody My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events. |
rob smith Send message Joined: 7 Mar 03 Posts: 22160 Credit: 416,307,556 RAC: 380 |
Sorry Bob, 7/25C is between one quarter and one third the speed of light. I think folks are getting confused by doing too many units conversions early in problem - leave it until the end and its a much easier sum. Let's look it simply, instead of doing early conversions: You want to travel somewhere 7 light years away. You want to get there in 25 years. Speed = distance / time Distance is 7 light years Time is 25 years so speed = 7 / 25 And then change C into whatever units yo want to use. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
We are going to need a map, to find these exoplanets . Newly Discovered Exoplanet With Extreme Seasons Called A 'Real Maverick' Two groups of astronomers working independently in Germany have discovered a massive new exoplanet that's quite strange--for a few reasons. The newfound exoplanet, dubbed Kepler-432b, was monitored by NASA's Kepler space telescope from 2009 to 2013 and identified as a planetary candidate in 2011. Using the 2.2-meter telescope at Calar Alto Observatory in AndalucÃa, Spain and the Nordic Optical Telescope on La Palma in the Canary Islands, the researchers are now confirming that, indeed, it's a planet. (Story continues below image.) http://www.huffingtonpost.com/2015/02/15/kepler-432b-exoplanet-extreme-seasons_n_6672378.html |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
7 lightyears = 66,224,900,000,000,000 meters The underlined is the initial question. The answer is simply, the speed of light in 7 years. Maybe future techology, using nuclear power, will make this possible...... rOZZ Music Pictures |
betreger Send message Joined: 29 Jun 99 Posts: 11360 Credit: 29,581,041 RAC: 66 |
The underlined is the initial question. The answer is simply, the speed of light in 7 years. Maybe future techology, using nuclear power, will make this possible...... No even if light speed were possible it would take a lot of time to accelerate to that speed. |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
The underlined is the initial question. The answer is simply, the speed of light in 7 years. Maybe future techology, using nuclear power, will make this possible...... I remembered project Orion over night: http://en.wikipedia.org/wiki/Project_Orion_%28nuclear_propulsion%29 We still have a lot to learn when it comes to nuclear propulsion. rOZZ Music Pictures |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Just 136 light-years away. Massive Exoplanet Evolved in Extreme 4-Star System For only the second time, an exoplanet living with an expansive family of four stars has been revealed. The exoplanet, which is a huge gaseous world 10 times the mass of Jupiter, was previously known to occupy a 3-star system, but a fourth star (a red dwarf) has now been found, revealing quadruple star systems possessing planets are more common than we thought. http://news.discovery.com/space/alien-life-exoplanets/massive-exoplanet-evolved-in-extreme-4-star-system-150304.htm |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
Just 136 light-years away. Beautiful slideshow! Thanx for the link Lynn:) rOZZ Music Pictures |
Odysseus Send message Joined: 26 Jul 99 Posts: 1808 Credit: 6,701,347 RAC: 6 |
The Relativistic Rocket at the Physics FAQ posits an engine that can provide enough thrust for the occupants to experience a constant one-gee acceleration. (Ignoring practical considerations of fuel, collision avoidance, &c., of course!) Halfway to the destination you turn the ship around, and brake at one gee the rest of the way so as to arrive at a low speed. Plugging a destination 7 light-years away into the formulæ given there, I get the following:
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Cheng Fan Soon Send message Joined: 3 Oct 05 Posts: 76 Credit: 4,581,394 RAC: 15 |
Latest news (6 March 2015): Astronomers believe mysterious signals - previously dismissed as stellar bursts - are coming from an Earth-like planet. http://www.dailymail.co.uk/sciencetech/article-2983202/Alien-noise-Earth-like-world-Mystery-signals-suggest-habitable-planet-exists-22-light-years-away.html |
Odysseus Send message Joined: 26 Jul 99 Posts: 1808 Credit: 6,701,347 RAC: 6 |
A 22-LY round trip would take somewhat over 12 years on the Relativistic Rocket, with a peak speed of 0.997 c; meanwhile about 48 years would pass on Earth. |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Astronomers believe mysterious signals - previously dismissed as stellar bursts - are coming from an Earth-like planet. If so then: are they repeating in a cyclic manner? is the frequency on which received especially relevant to this premise?. Why don't they decode the message? Why do they think this might be an intelligent message? It seems to me to support the conjecture they would have to furnish reasons along the lines that I have suggested. I know the Daily Mail has a huge circulation; but in reading the article, it looks to me to be worse than our "Supermarket Tabloids" in content. Perhaps the planet doesn't even exist. The picture is obviously a fake, and I say again what makes them think that the emissions are from an intelligent civilization. |
Odysseus Send message Joined: 26 Jul 99 Posts: 1808 Credit: 6,701,347 RAC: 6 |
Nobody’s claimed to have detected “signals“ in the sense of messages AFAICT; the term is being used with the data-processing or statistical meaning—as opposed to “noiseâ€. What they’re talking about(*) is Doppler-shift observations of the primary’s motion, and specifically whether certain fluctuations represent the ‘fingerprint’ of an orbiting planet or some kind of pulsation or similar behaviour on the part of the star itself. *) “They“ meaning the astronomers, not necessarily the popular press. P.S. I believe this is the paper on which the above story was based; see also this rebuttal. |
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