a thoughtful web.
comments
posts
badges
Good ideas and conversation. No ads, no tracking.
Login
or
Take a Tour
!
#blackholes
followers: 0
activity
·
time
Measuring the Spin of Black Holes
user-inactivated
3
user-inactivated
sci-news.com
·
#space
·
#blackholes
Ayreon (featuring Bruce Dickinson): "Into the Black Hole"
0
demifiend
video
·
#blackholes
·
#spacemetal
about
tutorial
faq
rss
tmi
random
privacy & terms
weather
donate
login