A New World
My ramblings about science….

Well this is something that annoys me somewhat, because there is no need for it.

I’m going to discuss some aspects of stellar sized black holes, these are formed after supernova, from stars of about 20 Solar masses and themselves are about 10 Solar masses (between 5 and 15 depending on which you look at).

Their event horizons are governed by the equation:

So we get something that is upwards of 15km.

Beyond this point (which is quite small) the black hole as the SAME gravitational effect as any other object with that mass.

So you can have steady orbits.

If the sun magically became a black hole, we would carry on orbiting it, in the same way.

This entry was posted on Friday, March 21st, 2008 at 11:14 pm and is filed under Astrophysics, Some Myths. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.