The number of stars in a galaxy varies, but assuming an average of 100 billion stars per galaxy means that there are about 1,000,000,000,000,000,000,000 (thats 1 There are eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. how many planets are there Currently eight, but there is widespread belief that a previously unsuspected Planet Nine exists. In October 2016, an article in Science (based on deep-field images from the Hubble Space Telescope) suggested that there are about 2 trillion galaxies in the observable universe, or about 10 times more galaxies than previously suggested. ... How Many Planets are in the Solar System? Our own Sun has at least eight Their estimate of how many galaxies the observable universe has? - Saturday, August 12, 2017 at Toyota USA Automobile Museum, Torrance, CA. ... How Many Planets are in the Solar System? . What they do know is that based on measurements of portions of the sky and extrapolation, that there are about 100 billion stars in our galaxy and up to 10 trillion galaxies in the universe. There used to be nine planets. Originally Answered: How many planets are there in the universe? Find answers on: How many planets in the universe can support life? About 7.6% percent of those stars are class G stars (like our Sun). Jun 2, 2017 ... Now there are eight, or maybe nine after all. I find this odd. 2017. That means up to 1,000,000,000,000,000,000,000,000 stars. If we included those instead, the number of planets in our galaxy would likely increase by anywhere from a factor of a hundred to a million, meaning there are probably between 10^15 and 10^19 planetary bodies, total, within our galaxy. Again, lets take the middle position - 250 billion. Now there are ... are currently visible in the night sky in June 2017. More than 1000 tutors online! The Universe is out there, ... Science 10/07/2017 @ 10:00AM 3,346 views ... How many planets are there in our galaxy? The Milky Way is also believed to have a similar number of planets. Estimates for the Milky Way range from 100 billion to 400 billion. Some people get pretty grumpy when you ask: how many planets are in the Solar System? ... How many planets are there in our universe now aday? Jan 5, 2013 ... My point is this: if you want to accurately estimate how many planets there are in our ... And remember, our galaxy isn't alone in the Universe. 2018 How Many Planets Are in Our Solar System? 2018 How Many Planets Are in Our Solar System? (See How Many Stars Per Galaxy?). There also are estimation hurdles that must be overcome. how many planets are there Currently eight, but there is widespread belief that a previously unsuspected Planet Nine exists. How Many Galaxies Are There In The Universe? Jan 5, 2013 ... My point is this: if you want to accurately estimate how many planets there are in our ... And remember, our galaxy isn't alone in the Universe. Scientist wont be able to figure out the exact number. Solar System Planets: Order of the 8 (or 9) Planets. Im just going to warn you, this is a controversial topic. Jan 5, 2013 ... My point is this: if you want to accurately estimate how many planets there are in our ... And remember, our galaxy isn't alone in the Universe.