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Planet Hunters Report Record-Breaking Discovery, Search for other habitable planets
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moomin Send message Joined: 21 Oct 17 Posts: 6204 Credit: 38,420 RAC: 0 |
Galaxy A is travelling at 3/4 Light speed, we on the Milky Way are travelling in the opposite direction at 1/2 light speed, neither breaking Einstein's law. Relative to each other they are moving away from us a 1 1/4 light speed.Eh? No. You forgot to use the Lorentz transformation to get the relativistic speed between them. 1. laws of physics are the same for different observers. 2. speed of light is the same for all observers. The result is that Galaxy A are moving away from us at almost the speed of light when comparing. But practically speaking, if an ET comes from a relatively near star system say 20 light years away, would they consider a 40 year journey worthwhile?Who knows? How long is a ET generation? We know nothing of a ET lifeform. |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
A "Super Earth" – a planet much bigger and colder than our world – has been discovered in orbit around a nearby star, scientists announced in a study published Wednesday. How big? Over three times the mass of the Earth. How cold? A chilly temperature of about 238 degrees below zero. The planet and its star are nearby in cosmic terms only: At 30 trillion miles from Earth, Barnard's star is the closest single star to our solar system. https://www.usatoday.com/story/tech/science/2018/11/14/super-earth-discovered-orbiting-nearby-star/2000136002/ |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
What a shame to use the term "Super Earth" to describe a planet with crushing gravity and a temperature that could not support any form of life. We should call them "Planets" or inhospitable worlds. |
Bob DeWoody Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 |
What will be extremely painful to some is the discovery of a planet orbiting a star, say 20LY away, and determining that it is virtually identical to earth with or without ET. Someplace to go and no way to get there. 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. |
Pierre A Renaud Send message Joined: 3 Apr 99 Posts: 998 Credit: 9,101,544 RAC: 65 |
Farewell, Kepler: NASA Shuts Down Prolific Planet-Hunting Space Telescope - Nov. 16 2018 https://www.space.com/42461-kepler-exoplanet-hunting-telescope-shuts-down.html[/s] Apr 3, 1999 - May 3, 2020 |
moomin Send message Joined: 21 Oct 17 Posts: 6204 Credit: 38,420 RAC: 0 |
The James Webb Space Telescope. https://jwst.nasa.gov/origins.html When? The telescope will be launched on an Ariane 5 rocket from French Guiana in 2021. Well, perhaps that is. There have been many delays so far... https://jwst.nasa.gov/recentaccomplish.html |
Pierre A Renaud Send message Joined: 3 Apr 99 Posts: 998 Credit: 9,101,544 RAC: 65 |
And when shouldered by the JWT, TESS will kick arse (1) even more than it already does since this summer ! * (1) Sorry for the vocabulary I acquired on these message boardsFarewell, Kepler: NASA Shuts Down Prolific Planet-Hunting Space Telescope - Nov. 16 2018so which one will be its successor ? and when it will be operational ? Apr 3, 1999 - May 3, 2020 |
Sirius B Send message Joined: 26 Dec 00 Posts: 24877 Credit: 3,081,182 RAC: 7 |
(1) It seems someone forgot their oft use of a well known term & spelt it his way - b****x. Frank Sinatra you are not. :-) |
moomin Send message Joined: 21 Oct 17 Posts: 6204 Credit: 38,420 RAC: 0 |
But does TESS look for anything more than to planets in a goldilock zone to a remote sun? I don't think TESS have instruments to detect an exoplanet's atmosphere for instance. |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
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moomin Send message Joined: 21 Oct 17 Posts: 6204 Credit: 38,420 RAC: 0 |
I don't know about replacing Kepler as such. But it seems like NASA now have two missions underway. TESS is one. https://www.nasa.gov/tess-transiting-exoplanet-survey-satellite Then JWST as mentioned before. Looking for exoplanets using the "transiting method" have a problem though. The explored Sun system has to be in angle that could observed from here. So many planets will not be found. Well. You have to start from something at very least. |
moomin Send message Joined: 21 Oct 17 Posts: 6204 Credit: 38,420 RAC: 0 |
NASA’s TESS Releases First Science Image Released on September 17, 2018 https://svs.gsfc.nasa.gov/13069 |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30608 Credit: 53,134,872 RAC: 32 |
how comes in 2020 years we still cannot take pictures and still get those bad artefacts (bad lines of light)? That is explainable. It uses a mirror as a lens. The light bounces back to the focus. You have to put something at the focus to see or direct the light to some other place. Unfortunately we can't levitate that thing in front of the mirror, so it has tubes to hold it in place. The tubes cause the light to have rays and the thing in the center also causes a hole in the middle which doesn't show up much in the stars, but you have seen it in nature telephoto photos. It is the nature of using mirror optics. Now TESS also uses a digital sensor. That can cause artifacts as well which wouldn't be on a film camera. |
bluestar Send message Joined: 5 Sep 12 Posts: 6995 Credit: 2,084,789 RAC: 3 |
https://en.wikipedia.org/wiki/Lens_flare https://en.wikipedia.org/wiki/Backscatter_(photography) Only a first quick glance here, by keying in just "lens artifact", but also a quite good point, in that this could also be a thing being experienced myself, for only spending a bit of time behind the telescope, in my earlier days. Possibly more references down each respective article, because they do not fill in with all the details either. |
bluestar Send message Joined: 5 Sep 12 Posts: 6995 Credit: 2,084,789 RAC: 3 |
Do you wear glasses like myself here Chris, for also Lynn making a good point for that of "Super Earth", for also Barnard's star as well? These are both such a thing for just telling about our surroundings, for just space for such a thing, except for not any axis of good, for also evil, when perhaps only the coordinates of space, for just the n-dimensional thing. Add to it a bit of lens flare, and it could be "lenticular" for just a galaxy, except for not all people interpreting this word either, for only catching its meaning. Making it any Idea about both past, present, and also the future, it could still be the space we could know of, for only its environment or structure, except no such thing as proving any science, for only the sake of extraterrestrial intelligence. Next it apparently becomes one of those needles in a haystack, if not any nutshell either, for only the things we could be carrying out, and next also practice, because at times, it could also flare up a little. |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Another weird exoplanet. (CNN) A newly discovered exoplanet 124 light-years away is just full of hot air, according to a new study. HAT-P-11b, about the size of Neptune and four times larger than Earth, was found in the Cygnus constellation. https://www.cnn.com/2018/12/06/world/helium-exoplanet-balloon-study/index.html |
Pierre A Renaud Send message Joined: 3 Apr 99 Posts: 998 Credit: 9,101,544 RAC: 65 |
The citizen science project Planet Hunters TESS continues the work Planet Hunters initiated with KEPLER's data. With your help, we can discover new planets around stars outside of our own Solar System. The recently launched Transiting Exoplanet Survey Satellite (TESS) is providing us with a huge amount of data that lets us look for planets outside of our own Solar System. Over the next two years TESS will be busy surveying two-hundred-thousand bright nearby stars, measuring and recording their brightness every two minutes. With your help, we hope to uncover lots of interesting planetary systems, allowing us to explore the formation and evolution of these worlds. Our findings may even bring us one step closer to answering the question that we all seek to answer: Are we alone in the Universe?More about the transition from the Planet Hunters project to the Planet Hunters TESS project https://blog.planethunters.org/2018/12/06/planet-hunters-tess/ ABOUT Â Â Â Â TUTORIAL & TASKS Apr 3, 1999 - May 3, 2020 |
Lynn Send message Joined: 20 Nov 00 Posts: 14162 Credit: 79,603,650 RAC: 123 |
Hubble finds a Exoplanet https://www.nasa.gov/feature/goddard/2018/in-search-of-missing-worlds-hubble-finds-a-fast-evaporating-exoplanet In Search of Missing Worlds, Hubble Finds a Fast Evaporating Exoplanet Fishermen would be puzzled if they netted only big and little fish, but few medium-sized fish. Astronomers likewise have been perplexed in conducting a census of star-hugging extrasolar planets. They have found hot Jupiter-sized planets and hot super-Earths (planets no more than 1.5 times Earth's diameter). These planets are scorching hot because they orbit very close to their star. But so-called "hot Neptunes," whose atmospheres are heated to more than 1,700 degrees Fahrenheit, have been much harder to find. In fact, only about a handful of hot Neptunes have been found so far. |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Because we have found many hot Jupiters suggests that our own Jupiter was once close in to the Sun. Probably an encounter with another large planet--maybe Saturn or Neptune or some other in close orbit with jupiter. Perhaps some other rogue planet flung our way. This suggests that we are more unique--here in our own Solar System--- than some would have us to believe. I list having a Jupiter-like planet far out from its star to protect Earth-like rocky planets as a requirement for life to survive on a prototypical Earth. |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
There is no evidence that it has ever been closer to the sun. There is substantial evidence in the theory of how solar systems are formed that the physics of this process favor close-in large gas planets. As further evidence I point to the proliferation of the close-in gas giants that have been found. |
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