A famous crossed lunar selfie: Alan Bean's picture of Pete Conrad taking Alan's picture during #Apollo12's extravehicular activity, 52 years ago #Todaygo.nasa.gov/2g6SmjS
At Pete's left wrist, his checklist open to one of the pages on which the backup crew pasted pics of Playboy Playmates bit.ly/2fgFrhS#Apollo12, #52YearsAgoToday
The only time humans visited a probe landed before them on another world: the Apollo 12 crew visited the landing site of Surveyor 3, 52 years ago #Today during their second extra-vehicular activity go.nasa.gov/2g6SmjS
52 years ago #Today, Alan Bean and Pete Conrad walked on the Moon for the second time in human history. After the extraveicular activities, they returned back to the command module: this is a sped up video of the docking buff.ly/344KMzL#Apollo12
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52 years ago #Today, the Apollo 12 crew landed on the Moon. This is the Intrepid Lunar Module prior to the descent. The largest crater is Ptolemaeus go.nasa.gov/2fV0eoE
The Apollo 12 crew prepare for undocking and TV coverage of the event, followed by the second lunar landing attempt on the Ocean of Storms, 52 years ago #Todaybuff.ly/2D12Zly
Pete Conrad was the first to exit the Apollo 12 Intrepid Lunar Module 52 years ago #Today, starting the first lunar extravehicular activity after Apollo 11 go.nasa.gov/2fs41dh
One of the best series of photos taken during the Apollo 15's third extravehicular activity, 50 years ago #Todaygo.nasa.gov/2aKCzsh [5 photos stitched with MS ICE] #Apollo50
The Apollo 15's Lunar Module liftoff and ascent from the rover camera was the first televised liftoff of a Lunar Module, 50 years ago #Todaybit.ly/2aKKO7Y#Apollo50
This impressive photo by Keri Lee Nelson shows us a mushroom-shaped iceberg. Part of a larger iceberg that's slowly shedding weight via calving, as it loses weight the smooth part (which has been submerged for some time) is rising out the water [source: buff.ly/2QLLvRd]
This mushroom iceberg was observed in 1912 by Frank Hurley, who visited Antarctica as a member of the First Australasian Antarctic Expedition, 1911-1914 [source: buff.ly/3jDM9wI]
Sometimes mushroom-shaped icebergs can look like something else. This is an iceberg shaped like a dragon, towering ~ 15 feet above the waters of Muir Inlet, Glacier Bay National Park, Alaska [source: buff.ly/2EUK7cj]
41 years ago #Today, Mount St. Helens erupted: the deadliest and most destructive volcanic event in the history of the U.S. [read more: bit.ly/1L0dKzT] [video: buff.ly/3yi2RK7]
A red Ford Pinto with a blue dirt bike before the hell. The story behind one of the most puzzling photos of Mount St Helens' May 1980 eruption, happened 41 years ago #Todayow.ly/2aJK50vujyW
In these two pictures, Mount St. Helens is showed before and after the devastating 1980 eruption, happened 41 years ago #Todayow.ly/D9hG50wpiJN
They didn't make it to the Moon, but through their efforts and sacrifice we all did. The Apollo1 tragedy happened 54 years ago #Today [source, read more: buff.ly/2jvXRwW]
«If we die we want people to accept it. We are in a risky business, and we hope that if anything happens to us, it will not delay the program. The conquest of space is worth the risk of life» - Virgil "Gus" Grissom, died on the #Apollo1 54 years ago #Todaybit.ly/2Bx5UiV
54 years ago #Today, president Lyndon Johnson received this memorandum announcing the tragedy of mission later known as #Apollo1buff.ly/2jmgSP1