OK

These diaries are the most Recommended for all time for this tag:
Star Trek-style "warp" drive allowing faster-than-light (FTL) travel was shown to be theoretically possible in 1994, but the energy requirements were enormous: The entire mass-energy of a planet the ...
by Troubadour
Comment Count 355 comments on Thu Sep 20, 2012 at 09:53 PM PDT with 238 Recommends
NASA has released two of the highest-resolution images ever obtained of the entire Earth, far exceeding the famous Blue Marble photograph taken from Apollo 17. I compare all three below - the Blue ...
by Troubadour
Comment Count 76 comments on Fri Feb 03, 2012 at 01:05 PM PST with 197 Recommends
There's really nothing to say about this other than, cheers to a future where someone someday sees this with their own eyes: We're all in that picture. Every one of us.
by Troubadour
Comment Count 76 comments on Tue Jul 23, 2013 at 01:40 PM PDT with 167 Recommends
(Photo: Brandon Clifford) From The Independent (UK): More than five centuries after Christopher Columbus’s flagship, the Santa Maria, was wrecked in the Caribbean, archaeological investigators ...
by ericlewis0
Comment Count 97 comments on Mon May 12, 2014 at 05:45 PM PDT with 157 Recommends
According to popular myth, the Europeans, benighted by religious fervor and faith in the Bible, thought the world was flat until Christopher Columbus proved them all wrong in 1492. In reality, the ...
by Lenny Flank
Comment Count 192 comments on Tue Sep 23, 2014 at 08:36 AM PDT with 133 Recommends
Very cool geology news, from our sister planet ... NASA Mars rover finds key evidence for lake at landing site by Irene Klotz, CAPE CANAVERAL, Fla. -- Dec 8, 2014 (Reuters) - Billions of years ...
by jamess
Comment Count 80 comments on Mon Dec 08, 2014 at 06:14 PM PST with 127 Recommends
In part 2 of our adventure cruise around the solar system, we visit the innermost and smallest planet, Mercury . Its severe landscape, ...
by Troubadour
Comment Count 93 comments on Tue Aug 16, 2011 at 05:27 PM PDT with 119 Recommends
by Paper Cup
Comment Count 84 comments on Fri Jun 30, 2006 at 01:04 PM PDT with 82 Recommends
One popular misconception is that Lewis-and-Clark (referring to the U.S. Corps of Discovery under the leadership of Meriwether Lewis and William Clark) were the first to travel across North America. ...
by Ojibwa
Comment Count 30 comments on Mon Sep 09, 2013 at 07:14 AM PDT with 81 Recommends
The red wanderer in our sky, Mars - once an omen of strife and misfortune due to its color, now a beacon to the hopes and dreams of mankind - holds the promise of a second home, a "boundless" ...
by Troubadour
Comment Count 38 comments on Sun Mar 18, 2012 at 06:08 PM PDT with 79 Recommends
I've taken an interest in some light day-hiking lately, and it started crossing over to my other nature-inspired passion, space. Although it's hardly new for a space enthusiast to imagine the ...
by Troubadour
Comment Count 106 comments on Fri Jan 06, 2012 at 08:51 PM PST with 79 Recommends
For part 3 of our celestial safari, we visit the second planet from the Sun, Venus - a caustic, hellish, cloud-choked nightmare whose ...
by Troubadour
Comment Count 54 comments on Sun Aug 28, 2011 at 10:09 AM PDT with 78 Recommends
People seemed to like my earlier diary introducing the first images ...
by Troubadour
Comment Count 45 comments on Tue Aug 09, 2011 at 07:50 AM PDT with 65 Recommends
Children for 1,000 generations grew up exploring fields, itching with poison oak and discovering the hard way what a wasp nest looks like. That’s no longer true. As I ...
by teacherken
Comment Count 143 comments on Sun Aug 02, 2009 at 04:08 AM PDT with 58 Recommends
There has never been a science fiction movie or TV show explaining the one overwhelming obstacle we face today to a spacefaring future: The impractical economics of having to build an entirely new ...
by Troubadour
Comment Count 56 comments on Sun Jul 07, 2013 at 06:51 PM PDT with 56 Recommends
The moons of Mars are not only potential stepping stones to the Red Planet itself, but interesting objects in their own right: Two relatively large, irregularly-shaped, asteroid-like bodies in close ...
by Troubadour
Comment Count 33 comments on Sat May 26, 2012 at 07:16 PM PDT with 51 Recommends
by Marcel F. Williams With the end of the Space Shuttle era, there has been much focus on the emerging commercial crew industry in America with the hope that these ...
by newpapyrus
Comment Count 82 comments on Tue Jul 12, 2011 at 07:57 PM PDT with 46 Recommends
When we set our sights on the stars there is nothing withing physical laws that we cannot achieve if we have enough commitment, determination and skill. The successive missions to the Hubble ...
by FishOutofWater
Comment Count 20 comments on Wed Sep 09, 2009 at 04:11 PM PDT with 42 Recommends
The term globalization came into use in academic circles during the 1950s. By the 1990s it had entered the mainstream vocabulary. Today it is thought of as something that is almost inseparable from ...
by Richard Lyon
Comment Count 32 comments on Wed Jun 02, 2010 at 02:10 PM PDT with 41 Recommends
Just heard this for the first time tonight. (... or the first time since a very long time ago). It speak volumes in such an understated, simple way. Carl Sagan's famous 'The Pale Blue Dot' speech.
by jamess
Comment Count 29 comments on Fri Dec 26, 2014 at 09:24 PM PST with 40 Recommends