WOULD BE GOOD!
2007-02-05 05:33:40 · 5 answers · asked by ? 1 in Science & Mathematics ➔ Astronomy & Space
I HAVE TRIED GOOGLE, AND WIKIPEDIA DOESN'T WORK EITHER
2007-02-05 05:37:47 · update #1
The nine planets web site in the answer above is good. Also, check the source below.
2007-02-05 05:47:17 · answer #1 · answered by campbelp2002 7 · 0⤊ 0⤋
If this is for a story, then some readers are going to be put off by how close the planets are. (1) It is not possible for 9 planets - or even 3 - to orbit around each other in stable orbits. After a few 100 years, some of the planets either are going to collide, or escape the system. Stable orbits require a central sun, at least 2x bigger than all the planets put together. (2) When planets form around a sun, only 1 planet is formed at each distance. The next planet forms at a distance at least 1.5X further away. If one planets forms at a distance of 100 million km, the next is at least 150 million km away. (3) For such large planets, 2000 km is much much too close to each other. Even for a small planet such as Earth, the Roche limit is about 18,000 km. The tidal forces on the planets would rip them apart. ... Therefor, in order to have several large planets so close to each other, there must be some magic or alien super-technology involved.
2016-03-29 06:08:42 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Wikipedia is excellent in that regard.
2007-02-05 05:36:19 · answer #3 · answered by Jerry P 6 · 0⤊ 0⤋
google and or wikipedia
2007-02-05 05:36:40 · answer #4 · answered by mark a 3 · 0⤊ 0⤋
Try this one:
http://www.nineplanets.org/
2007-02-05 05:43:20 · answer #5 · answered by Dr Dave P 7 · 1⤊ 0⤋