How many kilometers across is the solar system?
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Answer:
The user jhstha is WRONG, and the user MPV is RIGHT after all both in his figures and his conversion. The "Oort cloud" is said on its web page to be 3 light years in radius. That's approximately 100,000,000 light-seconds. The Earth is one AU from the sun, whose light takes just over 8 minutes to reach us. Say that's 500 seconds, so in round figures the Oort cloud goes out to 200,000 AU, or 30,000,000,000,000 kilometres from the sun.
The nearest star is only four light years away, but it does not capture part of the Oort cloud, so it must be rather smaller than the Sun.
50,000 to 100,000 AU if you include the Oort cloud (trillions icy objects which still are in the Sun's gravity influence).
1 AU=150,000,000km, so 100,000 AU=
15,000,000,000,000km.
Depends on what you care to include. The orbit of Neptune is about 5.5 billion miles in diameter. But there are other objects, both known and unknown, which revolve around the sun, so the total diameter is probably ten times that -- or more.
The user MPV is telling complete nonsense !!
First of all, the solar system is about 45 to 60 AU across, including the Oort cloud ...
Besides, he should explain what AU is: 1 AU is the distance Earth to the Sun. Furthermore, his conversion of 100,000 AU is wrong .. he forgot one time a zero hahahaha LOL how stupid ... and such one is allowed to be on level 4 ? I can't believe that.
You have to define what you mean as the Solar System. If you just mean the diameter of the orbit of the most distant planet, that now is Neptune. If you include the most distant known object, that is Eris. The Oort cloud is not proven to exist, certainly not beyond Eris.
Check wikipedia for the size of the orbits mentioned.
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