Back to Home

Blackholes Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Blackholes I | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
It Is Ridiculously Huge..

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Bruce on August 26, 2001 02:00:23 UTC

M = [(2)3/2gshelldr1/2]-2

in geometric units.


M ~ 1.25x1031meters [the mass of the Sun in meters is 1477m so this black hole is ~8.47x1027Solar mass]


r = 2M ~ 2.5x1031meters

The average velocity for the freely falling astronaut from r=2M to r=0 is 3/2 c (this is something you can find by integrating this distance with an integral which eliminates the infinity at r=0).

So it takes 5.555x1022seconds of wristwatch time for the astronaut to fall from r=2M to r=0.

This is ~ 1.76x1015Earth years

Boy was I off and as you can see this is a black hole that most likely doesn't exist in this universe.

Follow Ups:

Login to Post
Additional Information
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2023 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins