November 3, 1973. NASA launches Mariner 10 toward the planet Mercury. (On March 29, 1974, the Mariner would become the first space probe to reach that planet.) : r/50yearsago
Skylab | History, Discoveries, & Facts | Britannica
In Photos: The Most Jaw-Dropping Rocket Launch Since 1973 Is Now Just 12 Days Away As NASA Reveals New 'Mega Moon Rocket'
This Week in NASA History: First Crewed Skylab Mission – May 25, 1973 - NASA
Pioneer 11, launched 50 years ago, helped solve mysteries of the universe - UPI.com
[SKYLAB 4] LIFTOFF. VINTAGE NASA "RED NUMBER" PHOTOGRAPH, 16 NOVEMBER 1973. | Space Photography Online | Books & Manuscripts | Sotheby's
SKYLAB SATURN V ROCKET ON LAUNCH PAD IN APRIL 1973 - 8X10 NASA PHOTO (ZZ-960) | eBay
Space Launch System: NASA's Giant Rocket Explained (Infographic) | Space