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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1⃣ Greenland is the world’s largest island that’s not a continent. It’s 3x Texas but 80% ice—2.85M sq km of frozen wildness. If that ice melts? Say goodbye to Florida.
2⃣ Greenland is big…but not THAT big. Thanks to the Mercator projection, on a map, it looks like it’s about the size of Africa or 3-4 times the size of Australia when, in fact, it is only one-fourteenth the size of the former and one-quarter the size of the latter.
3⃣ Population: 56,000. More polar bears (2,500) than towns (just 17). You’re more likely to meet a bear than a traffic jam.