And some stars have none. In other words, it's not entirely realistic for anyone to "predict" how many hospitable planets there are in the universe, since we're just starting to understand the planets in our own galaxy. As there are about 100 billion stars in the Milky Way, and in general they have planets, there could easily be 200 billion planets in our own galaxy. Along this line, an August 2019 study estimated that there are between 5 billion and 10 billion exoplanets in the Milky Way that reside in the habitable zone about their respective stars. 0 0 Mutya P Lv 7 1 decade ago The only known planets at the ones that could be seen by the telescope. How many potentially habitable planets are there? Astronomers estimate that there is roughly one exoplanet per star in our galaxy. Data from the Kepler Space Observatory have been used to suggest that there may be more than two billion planets in our galaxy capable of supporting life. Co-author Jeff Coughlin, who is a scientist that studies exoplanets at the SETI Institute revealed that “This is the first time that all of the pieces have been put together to provide a reliable measurement of the number of potentially habitable planets in the galaxy.” Maybe planets with up to … There are eight planets in the universe tsyonmakedabrown777 is waiting for your help. The study is based on observations taken over six years by the PLANET (Probing Lensing Anomalies NETwork) collaboration, using a technique called microlensing to survey the galaxy for planets. Researchers have found there may be as many as 300 million potentially habitable planets in our galaxy alone. MOUNTAIN VIEW, Calif. (SETI Institute PR) – Thanks to new research using data from the Kepler space telescope, it’s estimated that there could be as many as 300 million potentially habitable planets in our galaxy. how many planets in the universe are in the habitable zone ? There may be more Earth-like planets than grains of sand on all our beaches New research contends that the Milky Way alone is flush with billions of potentially habitable planets -- … In the observable universe, some say there are 7 x 10^22 stars, so if the stars out there ALSO mostly have planets, there could be 10^23 planets. tbrown2380 tbrown2380 Answer: there are eight planets, not including pluto. just wondering . from www.planetary.org "By extrapolating from the more than 200 planets discovered so far, the authors conclude that there are a Again, the point being that mathematically speaking, there may be a lot of habitable planets out there. But there are many ways we could have altered Venus’ atmosphere to have had the planet beneath it be habitable, just like Earth is, for 4+ billion years. Most of the time, water can only occur in the goldilocks zone.We narrow the planets down to the 10 most potentially habitable ones known to date based on their So there you have it folks, as far as habitable worlds go, we've only just begun. And it shows that unless the odds of advanced life evolving on a habitable planet are astonishingly low, then human kind is not the universe’s first technological, or advanced, civilization. Thanks to new research using data from the Kepler space telescope, it's estimated that there could be as many as 300 million potentially habitable planets in … The Virgo Supercluster is then one of about 10 million superclusters in the observable universe ( source ). With so many planets out there, the odds pretty good that at least some of them are hospitable at least for extremophile bacteria or things like those. Habitable alien planets similar to Earth may not be that rare in the universe, a new study suggests. Maybe there are only represented by what we’ve found in the habitable zone (pessimistic), or maybe there are as many as 100 times as many (optimistic). An evaluation is made of the role of such greenhouse gases as CO2 in the creation of circumstances habitable to life-forms in planets whose position relative to their star is comparable to that of Venus and Mars to the sun. First of all, we will use our previous estimations to arrive at an answer, or really more of a guess, to this question. How many habitable planets are there in the Universe? When we look up at the night … Among other things, researchers have focused microwave antennas and other receptors at these exoplanets, on the off chance that something might be heard at one of these locations. To keep going with our estimates, this would make the number of planets in the universe 10 million times 2 quadrillion (the estimate of the number of planets in the Virgo Supercluster), which comes to 21.6 sextillion . Of course, some stars have many planets – our own Sun has eight. There are about ten thousand billion billion habitable planets in the observable universe, and some of these Earth-like worlds could be found soon. We sincerely don't know. Habitable zones potentially capable of hosting life-bearing planets are wider for hotter stars. A new study suggests that the number of habitable exoplanets within the Milky Way alone may reach 60 billion. The universe (observable), on the other hand, is home to at least 125 billion galaxies. In order for complex life to survive, there has to be liquid water. Even if my numbers are way off, there could be as few as hundreds of millions of planets, or as many as maybe hundreds of billions in our galaxy alone that we could live on! There are at least 300 million habitable planets in the Milky Way, new NASA research has shown - hinting that it’s less likely that humanity is alone in the universe. The paper, published in Astrobiology , also shows for the first time just what “pessimism” or “optimism” mean when it comes to estimating the likelihood of advanced extraterrestrial life. There is an equation to calculate the number of existing civilizations, but I will not focus on those aspects, since I am not a mathematician, and in that equation there are many unknown parameters and they are only suppositions, that equation is the Drake equation . There is ongoing research. But it's also not entirely unrealistic for me to hope that one of them is made of Play-Doh . Previous research performed by a team at Harvard University suggested that there … Add your answer and earn points. There are lower estimates of 50 million Habitable Planets in the MilkyWay. 3 or 4 years from now NASA's Kepler telescope will help give us a far more accurate estimate. We arrived at a conservative estimate of 160 sextillion, or how many planets there will be, and we also wonder, how many have living beings. Many scientists would like to know the answer to that question. The universe is so big that we can't even begin to imagine how many planets there are. The number comes from extrapolating from selection of Sun-like stars studied by the telescope, which found that 22% of them have planets that are potentially Earth-like. Scientists work out how many planets like Earth are in the universe, marking breakthrough in search for alien life Andrew Griffin @_andrew_griffin Thursday 15 August 2019 13:00 even with out life i want to know how many planets that look like earth even if there … The PHL's Habitable Universe web page provides estimates on the number of habitable worlds in the universe. Earth is in the first 8 percent, and who knows what the next 100 trillion years, and the other 92 percent of habitable planets… Here we use the latest data and models to estimate the number of potentially habitable exoplanets, those Earth-size planets orbiting within the habitable zone of stars , starting from the nearby stars, our home galaxy, to the whole observable universe . This means that it's likely there is a minimum of 1,500 planets within just 50 light-years of Earth. The three really big … Smaller, dimmer red dwarfs, the most common type in our Milky Way galaxy, have much tighter habitable zones as in the TRAPPIST-1 system. The size of planets is also noted to play a role, in that larger planets will possess tectonic activity associated with atmosphere- and ocean-enhancing weathering chemistries. 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