#OnThisDay 13 March 1855 #PercivalLowell was born He established the observatory where #Pluto was discovered (Lowell Observatory) 14yrs after he died He also studied #Mars extensively & made intricate drawings of its surface markings & ‘canals’ as he perceived them #space #astronomy

It's time to celebrate Pluto! ❤️ ✨ Our I Heart Pluto Festival runs from Feb 18-20 this year and is jam-packed with exciting events and an exceptional keynote speaker. Learn more and get your tickets now at iheartpluto.org! 📷: NASA

Happy Women’s History Month! Check out our Women in Astronomy exhibit linked here to learn more about the amazing women of Lowell Observatory’s history! 🔭🪐✨ collectionslowellobservatory.omeka.net/exhibits/show/…

Happy #ArchivesHashtagParty !🥳 This month’s theme is #ArchivesMusic so we’ve chosen to highlight this letter from Percival Lowell to the Regina Music Box Company ordering a a Regina Corona No. 35 music box for his home in Flagstaff and songs he ordered from their catalog. 🎵

March is National Reading Month! In addition to our repository of historic artifacts, we also have a collection of space-tacular books, magazines, and scientific journals. Let us know what your favorite book is in the comments below! 📚

Spyder Webb Lowell Observatory NASA New Horizons Alan Stern Alice Bowman Marc Buie Laurel Kornfeld Spaceflash News The Pluto Diaries plutotoday Let's hear it for Percival! He gets a decent shout in our Mars book thanks to Lowell Observatory Archives as he elevated the Red Planet to the very toppermost of the poppermost in public perceptions. The work engendered in Flagstaff since then has never really been acknowledged as it should

Happy Birthday to our founder, Percival Lowell! Percival was born on this day in 1855 in Boston, Massachusetts. He studied mathematics at Harvard University and was fascinated by astronomy, especially the planet Mars. Percival also set in motion the search for Pluto🎈🎂🔭

Are You a Woman in Astronomy? Consider Donating Your Papers to an Archivist! asignalfrommars.wordpress.com/2023/03/21/are…

Happy Birthday to the former director of Lowell Observatory and mayor of Flagstaff, Earl Carl “E.C.” Slipher! He was born on this day in 1885 and is the younger brother of fellow astronomer, Vesto Melvin Slipher. E.C. began his lifelong career as a planetary astronomer in 1907🎈

Happy #ArchivesHashtagParty ! This month's theme is #ArchivesfortheBirds so enjoy this birds eye view of our Pluto walk taken in December of 1993 🕊️🪐

On Tuesday, a moon globe made by NASA’s Aeronautical Chart and Information Center (ACIC) in 1969 made its way back to our archives! The ACIC had an office at Lowell Observatory throughout the 1960s that served as an important site for the lunar mapping project🌒

Happy #ArchivesHashtagParty ! This month’s theme is #ArchivesBabies 👶🏼 Enjoy these pictures of Percival Lowell and our archives staff as babies!

May is National Preservation Month, and here in the archives we’re thinking about why digitization matters. Read all about it in our newest blog post! asignalfrommars.wordpress.com/2023/05/22/why…

Archives assistant Melissa shared some exciting materials from our archives at last nights’ #ACM2023. Some of the materials on display included replicas of the Pluto discovery plates, a letter from Albert Einstein, and a letter from Ringo Starr!

Astronomer V.M. Slipher used this spectrograph in 1912 to observe "spiral nebulae," now known to be galaxies. His discovery that these objects were primarily moving away from us was the first step in determining the universe is expanding. #ArchivesHashtagParty #ArchivesScience

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