Timeline for Number of stars & planets in Milky Way Galaxy?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 25, 2016 at 1:17 | comment | added | Jack R. Woods | There are exactly 221,560,742,983 stars in the Milky Way, with one exploding tomorrow, and 576,980,702,675 planets not counting dwarfs. I asked God. | |
| Mar 24, 2016 at 7:31 | comment | added | ProfRob | @WayfaringStranger That was my point. Simply stating how many planets have been discovered does not answer the question. The first number you quote in your comment is simply made up since we know almost nothing about the frequency of planets around the most common type of star. The second is hugely uncertain (2 sig figs is absurd). Both are dependent on how many stars are assumed to be present! | |
| Mar 24, 2016 at 2:09 | comment | added | Wayfaring Stranger | @RobJeffries One can only build up a statistically useful estimate by sampling. Of course the sampling method used, light curves or stellar wobbling makes a difference in how you have to do the calculation. 100 billion planets nasa.gov/multimedia/imagegallery/image_feature_2233.html or 8.8 billion earth like planets nbcnews.com/science/… I expect those numbers will be considerably refined over the next couple decades. | |
| Mar 23, 2016 at 7:12 | comment | added | ProfRob | Obviously, this number keeps increasing. It is irrelevant in answering this question, since it is a vanishingly small fraction of the total number. | |
| Mar 23, 2016 at 6:16 | history | edited | Astrofun | CC BY-SA 3.0 |
added 1 character in body
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| Mar 23, 2016 at 6:07 | comment | added | Wayfaring Stranger | exoplanets.org claims 5428. exoplanet.eu has 2097 | |
| Mar 23, 2016 at 5:09 | comment | added | Astrofun | I got that number from wikipedia! <en.wikipedia.org/wiki/Planetary_system> | |
| Mar 22, 2016 at 9:45 | comment | added | SE - stop firing the good guys | I think you may have made up the number when you say 1337. Too much of a coinsidence. | |
| Mar 22, 2016 at 7:08 | review | Late answers | |||
| Mar 22, 2016 at 9:45 | |||||
| Mar 22, 2016 at 6:50 | history | answered | Astrofun | CC BY-SA 3.0 |