If An Elderly But Distinguished Scientist Says

Open The Pod Bay Doors, Hal.

Mars Is The Next Frontier, What The Wild West Was, What America Was 500 Years Ago. It's Time To Strike Out Anew....mars Is Where The Action Is For The Next Thousand Years....the Characteristic Of Human Nature, And Perhaps Our Simian Branch Of The Family, Is Curiosity And Exploration. When We Stop Doing That, We Won't Be Humans Anymore. I've Seen Far More In My Lifetime Than I Ever Dreamed. Many Of Our Problems On Earth Can Only Be Solved By Space Technology....the Next Step Is In Space. It's Inevitable.

No One Of Intelligence Resents The Inevitable.

Nowhere In Space Will We Rest Our Eyes Upon The Familiar Shapes Of Trees And Plants, Or Any Of The Animals That Share Our World. Whatsoever Life We Meet Will Be As Strange And Alien As The Nightmare Creatures Of The Ocean Abyss, Or Of The Insect Empire Whose Horrors Are Normally Hidden From Us By Their Microscopic Scale.

One Orbit, With A Radius Of 42,000 Kilometers, Has A Period Of Exactly 24 Hours. A Body In Such An Orbit, If Its Plane Coincided With That Of The Earth's Equator, Would Revolve With The Earth And Would Thus Be Stationary Above The Same Spot On The Planet. It Would Remain Fixed In The Sky Of A Whole Hemisphere ... [to] Provide Coverage To Half The Globe, And For A World Service Three Would Be Required, Though More Could Be Readily Utilized. (1945) [predidicting Geosynchronous Communication Satellites]