[ExI] Milky Way escape velocity

Stefano Vaj stefano.vaj at gmail.com
Tue May 1 14:39:51 UTC 2012

On 1 May 2012 16:17, spike <spike66 at att.net> wrote:

> BOTECs in round numbers that I can recall, the distance from the sun to
> the center of the Milky Way is about 27,000 years, and the orbit period is
> about 250 million years, so the orbit speed is about 0.1 milli-c, and
> escape velocity from any round orbit is square root 2 times the tangential
> velocity so escape velocity from here would be about 140 micro-c, and a
> micro-c is about .3 km/sec so escape is about 40 km/sec.

I love those who speak Latin for us lazy lawyers... :-)

This makes it what, four orders of magnitude higher than escape velocity
from earth?

Stefano Vaj
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