Primitive planets? – Space/Science – HabitableZone

Space/Science

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

Log in
Register

Space/Science » in reply to Cool Green Hills of Earth an Anomoly?

Primitive planets?

podrock — 4/12/2007 8:40:03 PM (archived)

Early Earth was Purple, Study Suggests from LiveScience.

Log in or register to post.

The whole thread (7 posts)

Cool Green Hills of Earth an Anomoly? - phil - 4/11/2007 8:41:17 PM
- re: Cool Green Hills of Earth an Anomoly? - nick hoffman - 4/14/2007 2:34:44 PM
  - re: Cool Green Hills of Earth an Anomoly? - phil - 4/14/2007 6:42:24 PM
- Primitive planets? - podrock - 4/12/2007 8:40:03 PM
  - Speaking of photosynthethis...quantum effects - phil - 4/13/2007 2:39:01 PM
- more charts & commentary - phil - 4/11/2007 9:06:02 PM
  - re: tsk... - Marcia - 4/12/2007 6:54:24 AM

HabitableZone — be civil, or at least entertaining.