Economy 52,834 Posted February 7, 2019 Share Posted February 7, 2019 https://www.newsclick.in/antila-2-large-and-dim-new-galaxy-found-far-side-milky-way The Milky way has had a dwarf Galaxy (Antila 2) orbiting us the entire time and until recently we never saw it This galaxy is on the opposite end of the galaxy of where Earth currently is which made it difficult to see as the stars of our own galaxy were in the way and made it hard to make out In addition this galaxy is 10,000 times fainter than our own with its stars quite sparse from eachother in that galaxy making it even harder to make out But as it turns out we have another galaxy closer to us than Andromeda, it's literally right next to us as a next door neighbour and this whole time we didn't see Link to post Share on other sites More sharing options...
Economy 52,834 Posted February 7, 2019 Author Share Posted February 7, 2019 I always wondered if something similar could of happened in our own solar system... What if there's another planet that by sheer coincidence has the exact same orbit speed as the earth but it's 180 degrees across from the earth on the exact opposite end of the sun? If a planet was on the other side and had the exact same orbit as earth never giving a chance for one planet to circumvent the other, we'd never see it and know that it's there Link to post Share on other sites More sharing options...
nerdfacekillah 4,618 Posted February 7, 2019 Share Posted February 7, 2019 ok time to go there, im done with planet earth If you don’t have any shadows, you’re not standing in the light. Link to post Share on other sites More sharing options...
Guest Posted February 7, 2019 Share Posted February 7, 2019 Get ready for the conspiracy people saying IT'S COLLIDING WITH US!!!!!!!!! Link to post Share on other sites More sharing options...
Economy 52,834 Posted February 7, 2019 Author Share Posted February 7, 2019 Just now, nerdfacekillah said: ok time to go there, im done with planet earth I think our own Galaxy has a lot more planets to choose from... A galaxy 10,000 times fainter would suggest it has only 10 Million Stars (vs minimum estimates of 100 Billion in the milky Way) Given how many factors have to be just right to get an earth like planet... It's quite possible not a single planet in that galaxy could sustain human life In our own galaxy the odds of having at least 1 planet being super similar to ours increase significantly Link to post Share on other sites More sharing options...
Economy 52,834 Posted February 7, 2019 Author Share Posted February 7, 2019 3 minutes ago, hurricane326 said: Get ready for the conspiracy people saying IT'S COLLIDING WITH US!!!!!!!!! I mean galaxies do that... Andromeda which is even bigger than our galaxy is literally on a collision course towards the milky way... But orbits of solar systems will readjust themselves. Galaxies colliding isn't a physical impact like a car crash (tho I'm sure some individual solar systems that are in the wrong spot could be thrown into chaos) Space will look extremely different in a few billion years... Galaxies that are close enough to eachother are colliding (unless they are in orbit of eachother).... Galaxies that are further apart are getting further and further from eachother due to the expansion of space. Eventually space will be just large clumps of big galaxies and extremely huge empty spaces until the next clump I've read before that in several billion years the galaxies in our local group is all we will be able to observe... Every other galaxy will be out of visual range due to space expansion Link to post Share on other sites More sharing options...
Kimmo 82,283 Posted February 7, 2019 Share Posted February 7, 2019 Look beautiful!!! Antlia 2 (upper left), hidden on the Milky Way's far side, is as big as the Large Magellanic Cloud (lower right) but much dimmer. (A bright, artificial blob representing Antlia 2 was added to show its location.) Hottie Detector Link to post Share on other sites More sharing options...
TSUNAMI 21,297 Posted February 7, 2019 Share Posted February 7, 2019 12 minutes ago, Economy said: I always wondered if something similar could of happened in our own solar system... What if there's another planet that by sheer coincidence has the exact same orbit speed as the earth but it's 180 degrees across from the earth on the exact opposite end of the sun? If a planet was on the other side and had the exact same orbit as earth never giving a chance for one planet to circumvent the other, we'd never see it and know that it's there Voyager says hello from the deep cold space Link to post Share on other sites More sharing options...
calmar 22,766 Posted February 7, 2019 Share Posted February 7, 2019 13 minutes ago, Economy said: If a planet was on the other side and had the exact same orbit as earth never giving a chance for one planet to circumvent the other, we'd never see it and know that it's there We would know by now given that we have sent missions to inferior planets as well as the Sun (43 have been to to Venus, 2 to Mercury, over 60 to the Sun), and we have also parked things in the Sun-Earth Lagrangian points, which would easily have detected a planet such as the one you are describing by this point (since such a planet would be at the Sun-Earth L3.) In addition, Venus passes very, very close to the Sun-Earth L3 every 20 years, and so that combined with other gravitational forces means there's no way an object of any real size could be stable there. Link to post Share on other sites More sharing options...
Economy 52,834 Posted February 7, 2019 Author Share Posted February 7, 2019 6 minutes ago, JFK said: Voyager says hello from the deep cold space Voyager may not be scanning enough Into the solar system to guarantee it wouldn't miss it especially if it wasn't a large one The quality of Voyager photos is quite bad and it only takes snap shots a few times a day because the limited 1970s computer in it take a long time to process the data to then send it here limiting the amount of ground it can cover If we had the ability to send another Voyager now as far as we did with computers now, it would cover a lot more data Link to post Share on other sites More sharing options...
DiscoHeaven23 35,007 Posted February 7, 2019 Share Posted February 7, 2019 It really goes to show how much we don't know. And how much we think we know, but don't know. That excites me Link to post Share on other sites More sharing options...
River 127,310 Posted February 7, 2019 Share Posted February 7, 2019 It's like those neighbors that live next to you for 20 years but you never saw their faces for some reason until one sunny day you decide to turn your head and you see them and it's awkward as sh-t So sploosh your juice all over me you Riverboy Link to post Share on other sites More sharing options...
Economy 52,834 Posted February 7, 2019 Author Share Posted February 7, 2019 Just now, DiscoHeaven23 said: It really goes to show how much we don't know. And how much we think we know, but don't know. That excites me I was actually just reading an article now about this since I came across this topic Seems like dwarf galaxies close to our own are actually a challange to detect even tho they are so close Because they are small and faint it's hard to make them out and tell them apart from just another star in our sky Instruments have to be specifically analysing that area of space and computer compiling all the data to calculate distance etc Sometimes some of them cannot be seen with the naked eye even with telescopes and computers have to make them out but if you don't visually see anything it's hard to decide to have the computer analyse that area because you don't think you have reason to So it turns out that every so often new dwarf galaxies close to us are discovered and there may still be many more we aren't aware of at this time This one in the thread is particularly interesting because it's literally right beside us but because it's on the very opposite end of the galaxy that earth is currently in, our own stars got in the way and we never noticed it was there So far 55 galaxies have been found in our local group but only 3 of them are of any significance in terms of size and mass... Our own milkyway galaxy, Andromeda (the largest I believe) and M33 which is on the other end of the local group that the milkyway is in Also Andromeda is pretty close to M33 on the other side of the local group which means the milkyway doesn't have any large galaxies that are super close to us, only tiny dwarf galaxies, most of them are on a collision towards the milkyway and we will consume them and their stars will become part of the milkyway Andromeda which is a little farther is also on a collision course, so when that finally happens it will be a huge galaxy. I don't know if M33 is also being attracted or not tho Link to post Share on other sites More sharing options...
Guest Posted February 7, 2019 Share Posted February 7, 2019 41 minutes ago, Economy said: I mean galaxies do that... Andromeda which is even bigger than our galaxy is literally on a collision course towards the milky way... But orbits of solar systems will readjust themselves. Galaxies colliding isn't a physical impact like a car crash (tho I'm sure some individual solar systems that are in the wrong spot could be thrown into chaos) Space will look extremely different in a few billion years... Galaxies that are close enough to eachother are colliding (unless they are in orbit of eachother).... Galaxies that are further apart are getting further and further from eachother due to the expansion of space. Eventually space will be just large clumps of big galaxies and extremely huge empty spaces until the next clump I've read before that in several billion years the galaxies in our local group is all we will be able to observe... Every other galaxy will be out of visual range due to space expansion Sis I know I'm a nerd too lol . It's not happening NOW Link to post Share on other sites More sharing options...
Eggsy 8,280 Posted February 7, 2019 Share Posted February 7, 2019 54 minutes ago, Economy said: I always wondered if something similar could of happened in our own solar system... What if there's another planet that by sheer coincidence has the exact same orbit speed as the earth but it's 180 degrees across from the earth on the exact opposite end of the sun? If a planet was on the other side and had the exact same orbit as earth never giving a chance for one planet to circumvent the other, we'd never see it and know that it's there They have recent found another dwarf planet in our solar system https://www.universetoday.com/140152/new-dwarf-planet-found-in-the-outskirts-of-the-solar-system-giving-astronomers-more-ammunition-to-search-for-evidence-of-planet-9/ Link to post Share on other sites More sharing options...
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