The Orrery
Orrery User Guide
Earth Viewer
work in progress
Home
Space/Science
↳
Transient Alerts
Geek Speak
Science Fiction
Current Events
Off Topic
Flame
Guest Board
☰
Space/Science
Space/Science
Transient Alerts
Geek Speak
Science Fiction
Current Events
Off Topic
Flame
Guest Board
☰
Recent posts
Recent posts
Fewer Transient Alerts coming
BuckGalaxy
November 2, 2026 5:48 pm
(Space/Science)
This report from Congress came out last week...
podrock
November 1, 2026 11:22 pm
(Current Events)
Happy Halloween
podrock
October 31, 2026 3:03 am
(Off Topic)
Expect one hell of a recession/depression in 2027
Arrell
October 31, 2026 1:16 am
(Current Events)
Next week will get ugly....
Arrell
October 30, 2026 2:02 pm
(Current Events)
Sir Patrick Stewart.
podrock
October 30, 2026 11:52 am
(Off Topic)
Bernie Taupin. A great interview
podrock
October 30, 2026 3:05 am
(Off Topic)
A new Dwarf Planet?
Arrell
October 30, 2026 12:49 am
(Space/Science)
John Wheeler's philosophy: "Beyond the Black Hole"
RL
October 17, 2025 5:00 am
(Space/Science)
"Engage!"
BuckGalaxy
October 29, 2026 10:58 pm
(Off Topic)
On this day in Space/Science
1 year ago (that week)
New Glenn set for its second launch on November 9
7 replies · Nov 5, 2025
5 years ago (that week)
ZEISS Mineralogic 3D
1 reply · Nov 3, 2021
10 years ago (that week)
CO2 to ethanol
0 replies · Nov 1, 2016
Search the board
Go
Home
Guide
Resources
Orrery
Earth viewer
Sea ice
Log in
Register
Space/Science
» in reply to
Circles of Life
Re: Circles of Life
Paladin
—
2/20/2003 4:10:04 PM
(archived)
<
See a
paper
about the project.
Log in
or
register
to post.
The whole thread
(6 posts)
Circles of Life
-
Adam
-
2/20/2003 1:12:34 PM
Re: Circles of Life
-
Paladin
-
2/20/2003 4:10:04 PM
Re: Laser power, efficiency, operating lifetime, and Extraterrestrials
-
SM
-
2/20/2003 4:59:29 PM
Maybe ETs look before they speak.
-
Lee
-
2/21/2003 8:38:30 PM
Optical SETI
-
R.L.
-
2/21/2003 10:09:43 AM
Re: Circles of Life
-
Paladin
-
2/20/2003 3:58:32 PM
HabitableZone — be civil, or at least entertaining.
