01-21-2015, 07:21 AM
(This post was last modified: 01-21-2015, 01:46 PM by dreamliner.)
Since there are 250 billion stars in milky way (as mentioned by Ra), 335 million planets looks quite low compared to the total number of stars. Considering that solar system has 9/10 planets, one would expect at least 250 billion planets in milky way.
Perhaps "one-fifth" was a misspelling/mispronunciation or mishearing of "one-fiftieth". Or, the low quantity of planets is because of the young stars being the majority in milky way.
However, astronomers'/scientists' predictions are towards a figure between 100-400 billion planets, which is way too high than 335 million (or even higher than 67x50):
https://en.wikipedia.org/wiki/Milky_Way#...nd_planets
https://web.archive.org/web/201407232130...2/07/full/
It seems that the microlensing technique they use to survey the number of planets is quite sensitive; "it can detect a planet which is as far from its star as Saturn is from Sun, or as close as Mercury is to Sun, and it is also sensitive to detecting planets as small as Mercury".
In this case, it can also be claimed that 67 million could also have been misspelled; perhaps Ra forgot to add 3 more zeros while spelling the number of inhabited planets. If it was/is so, then the number of planets containing the awareness of one or more densities would be 67 billion and the total number of planets in milky way would be 335 billion.
Perhaps "one-fifth" was a misspelling/mispronunciation or mishearing of "one-fiftieth". Or, the low quantity of planets is because of the young stars being the majority in milky way.
However, astronomers'/scientists' predictions are towards a figure between 100-400 billion planets, which is way too high than 335 million (or even higher than 67x50):
https://en.wikipedia.org/wiki/Milky_Way#...nd_planets
https://web.archive.org/web/201407232130...2/07/full/
It seems that the microlensing technique they use to survey the number of planets is quite sensitive; "it can detect a planet which is as far from its star as Saturn is from Sun, or as close as Mercury is to Sun, and it is also sensitive to detecting planets as small as Mercury".
In this case, it can also be claimed that 67 million could also have been misspelled; perhaps Ra forgot to add 3 more zeros while spelling the number of inhabited planets. If it was/is so, then the number of planets containing the awareness of one or more densities would be 67 billion and the total number of planets in milky way would be 335 billion.