Dyson Spheres and Their Detection

Dyson Spheres > Additional Support/Evidence > Seeing Dyson Civilizations
 

 The Size of the Universe in the Hubble Ultra Deep Field P...

Facts About the Hubble Ultra Deep Field > Summary > Hubble Ultra Deep Field (UDF) photograph
The technical details followed by Chet Raymo's summary of how the photo demonstrates just how incredibly vast is our Cosmos.

 If Seeing the Stars was a Rarity

If the Stars Only Came Out One Night in 1,000 Years > Similarity > If We Only Saw the Stars One Night Every 100 Years
Emerson and Carson both imagine a world where the stars are not something perpetually overhead, where humanity would not take them so easily for granted.

 The Audacity of Kennedy's Mission to the Moon

Kennedy\'s Speech to Congress Requesting Funds for the Space Program > Emphasis > Carl Sagan on the Audacity of John F. Kennedy\'s Moon Mission Proposal
Looking at what Kennedy was asking for from the perspective of today's politics, it's amazing how different things were then and today.