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Friday
26
July
2024

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Apollo 15
Apollo 15 (July 26 – August 7, 1971) was the fourth crewed mission to land on the Moon. It was the first of three J missions, with a longer stay on the Moon, a greater focus on science, and the use of the first Lunar Roving Vehicle (LRV). David Scott and James Irwin landed near Hadley Rille and spent 18 and a half hours on extravehicular activity (EVA), collecting 170 pounds (77 kg) of surface material. During the return trip, Alfred Worden performed the first spacewalk in deep space. The mission included the collection of the Genesis Rock, thought to be part of the Moon's early crust, and Scott used a hammer and a feather to demonstrate Galileo's theory that, absent air resistance, objects fall at the same rate regardless of mass. The mission was later marred when it was found that the crew had carried unauthorized postal covers to the lunar surface, some of which were sold by a West German stamp dealer. The crew was reprimanded for poor judgment, and none flew in space again. This photograph, taken by Scott during an EVA on August 2, shows Irwin giving a military salute beside the U.S. flag. The Lunar Module Falcon is in the center, with the LRV on the right.Photograph credit: David Scott; restored by Bammesk and Basile Morin
Wikipedia's dozen most essential tips

And of course, it's a baker's dozen...

  1. Create a user account (how and why)
  2. Please sign your name on talk pages
  3. Look before you leap (check for existing articles before you create one on that topic)
  4. How to start a new article
  5. How to make links to articles
  6. How to insert a picture into an article
  7. Where on the page to put images
  8. A better wiki editor: wikEd
  9. Check your work before you save, using Preview
  10. Automatic edit summary reminder
  11. How to move/rename a page
  12. Redirects
  13. How to display daily tips on your userpage

If you know even more important tips than these, please come to Tip of the day and add them to our tip collection. Enlighten us with your wisdom, and make Wikipedia a better place for everyone.

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