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Is the universe infinite, or does it have a limit?

By a425couple on Tue Oct 14 07:31:36 2025

Latest reply by a425couple on Tue Oct 14 07:31:36 2025
=?UTF-8?Q?Lynn=E2=80=99s_six_star_list_=28or_top_ten_list=29_in_Oct?= =?UTF-8?Q?ober_2025?=

By Lynn McGuire on Sun Oct 12 21:35:27 2025

Latest reply by Lynn McGuire on Sun Oct 12 21:35:27 2025
obit, George Smoot, a Nobel Prize-winning physicist

By a425couple on Sun Oct 12 07:36:08 2025

Latest reply by a425couple on Sun Oct 12 07:36:08 2025
Re: Pearls Before Swine: Rat has a new job in Hell

By a425couple on Fri Oct 3 10:22:12 2025

Latest reply by William Hyde on Sat Oct 4 16:30:33 2025
Interstellar Object 3I/Atlas Measured To Be Over 33 Billion Tons

By a425couple on Thu Sep 25 08:58:58 2025

Latest reply by a425couple on Thu Sep 25 08:58:58 2025
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By a425couple on Sun Sep 21 12:03:58 2025

Latest reply by a425couple on Sun Sep 21 12:03:58 2025
=?UTF-8?Q?Lynn=E2=80=99s_six_star_list_=28or_top_ten_list=29_in_Aug?= =?UTF-8?Q?ust_2025?=

By Lynn McGuire on Thu Aug 7 17:19:59 2025

Latest reply by Lynn McGuire on Fri Sep 19 21:22:33 2025
We've officially found 6,000 exoplanets, NASA says

By a425couple on Thu Sep 18 10:59:26 2025

Latest reply by a425couple on Thu Sep 18 10:59:26 2025
NASA discovery-is-closest-we-have-ever-come-to-finding-life-on-mars/

By a425couple on Thu Sep 18 08:36:03 2025

Latest reply by a425couple on Thu Sep 18 08:36:03 2025
a Quora about forming the moon

By a425couple on Sat Sep 6 07:15:54 2025

Latest reply by a425couple on Sat Sep 6 07:15:54 2025
Harassment at Antarctic research bases could spell problems for moon, Mars outposts

By a425couple on Wed Aug 27 09:44:17 2025

Latest reply by a425couple on Wed Aug 27 09:44:17 2025
Perhaps an animated version of Heinlein's "Citizen of the Galaxy".

By a425couple on Sat Aug 23 07:47:27 2025

Latest reply by Cryptoengineer on Wed Aug 27 09:03:34 2025
Re: (Worst) Robert A. Heinlein by William H. Patterson

By Lynn McGuire on Thu Aug 21 17:31:22 2025

Latest reply by Lynn McGuire on Thu Aug 21 17:31:22 2025
Re: (ReacTor) Five SF Works About Repurposing Organs and Other Body Parts

By Lynn McGuire on Thu Aug 21 17:30:33 2025

Latest reply by Lynn McGuire on Thu Aug 21 17:30:33 2025
TRAPPIST-1d isn't the Earth-like planet scientists had hoped

By a425couple on Fri Aug 15 10:16:22 2025

Latest reply by a425couple on Fri Aug 15 10:16:22 2025
new exoplanet just 4 light-years away from Earth

By a425couple on Fri Aug 8 08:41:58 2025

Latest reply by a425couple on Fri Aug 8 08:41:58 2025
bright planets in August's night sky: How to see them

By a425couple on Mon Aug 4 08:22:48 2025

Latest reply by a425couple on Mon Aug 4 08:22:48 2025
Astronomers capture the birth of planets around a baby sun outside our solar system

By a425couple on Thu Jul 17 06:51:31 2025

Latest reply by a425couple on Sun Jul 20 19:59:15 2025
more opinions on 3I/Atlas by Loeb

By a425couple on Wed Jul 16 15:48:21 2025

Latest reply by Jim Wilkins on Thu Jul 17 06:30:28 2025
Re: We May Have Our Third Interstellar Visitor

By Jim Wilkins on Wed Jul 2 18:24:35 2025

Latest reply by Jim Wilkins on Wed Jul 2 18:24:35 2025