My book has a cover! Publication expected Oct 2024 (UK) and Jan 2025 (US). For more info (including early reviews!) see: politybooks.com/bookdetail?boo…

For those who celebrate, may you find new meaning in the recounting of the Passover.

The #Jewish #calendar keeps both #lunar #months and #solar #years , so 15 Nissan is also #fullmoon .

#timekeeping #Pessach #astronomy

While Arcturus shines as the brightest star high in the east these evenings. Spica shines lower right of it — by about three fists at arm's length. To the right of Spica by half that distance, look for the distinctive four-star constellation of Corvus, the springtime Crow.

'this fragile earth, our island home' -- BCP 1979

#Earth from #Space Image by #Apollo17 taken Dec 7, 1972
#NASA #astronaut #photograph AS17-148-22727 #bluemarble (public domain)
#Earth Day #astronomy #spacetechnology #histsci

From the pages of a book to the vast expanse of space, libraries open doors to endless possibilities. Join Dr. Stephanie Jarmak in celebrating #NationalLibrarianDay and honoring those who cultivate curiosity and fuel imagination. s.si.edu/4aVP9iC

Sparks viewed endwise, possibly from a Van de Graaff generator. They are leaping some 20 feet from one terminal to the other and striking the rim of the two-porthole #ArchivesHastagParty #ArchivesSnapshot buff.ly/4a5L7Uz

Most of our time will be focused on Sun during the minutes of totality on April 8th, but consider tearing yourself away for a few seconds to put it all in context.
buff.ly/4awZLUU

From AAS Nova: Are you an astronomy graduate student who’s interested in science communication? Apply for the AAS Media Fellowship by June 21!
aasnova.org/2024/03/22/aas…

Astronomers have detected twisted, orderly magnetic fields near the event horizon of Sagittarius A*.
buff.ly/3IWueA4

This #WomensHistoryMonth , learn the story of the once-forgotten climate scientist, activist, and inventor, Eunice Foote, with help from the #InitialConditions podcast and Sir Roland Jackson (@rolandjackson in blue...).

🎧 Listen here: aip.org/initialconditi…

Educators! 📣 From Émilie du Châtelet and Laura Bassi to women's colleges and the Manhattan Project, celebrate #WomenInSTEM with your class this #WomensHistoryMonth using our collection of free teaching guides: aip.org/history-progra…

Thank you, Aura Satz, for sharing your inspiration for 'Her Luminous Distance' and other works with IGPG.
#Deaf #astronomer Henrietta Swan Leavitt and archival astronomical #photographicplates have much to reveal about perceiving the world differently.

iamanagram.com/HerLuminousDis…

New! 'Celebrating the Wonder of Science in the Shadow' -- a Special Issue of the Bulletin of the AAS, with dozens of articles documenting events, experiences, and engagements associated with the upcoming 2024 eclipse and the earlier 2023 annular eclipse: baas.aas.org/science-inthe-…

It's not every day that a giant volcano is discovered hiding in plain sight. By reviewing satellite imagery from many missions, scientists have spotted the remains of a colossal volcano on Mars.
buff.ly/3vll50D

For those who celebrate, may you find your #balance in #nature 's balance. Happy #VernalEquinox !

March 20, 2024 03:06 UTC
March 19, 2024 11:06 PM US EDT

The #Sun crosses the #celestialequator heading #north and marks the beginning of northern #Spring .

#astronomy #calendar

Every month has its #ides & kalends & nones.

When ancient #Roman #calendar retained a #lunar #month ,
kalends = 1st, #newmoon
nones ~ 7th, #1stquartermoon
ides ~ 15th, #fullmoon

Only #IdesOfMarch gets a bad rap.

#timekeeping #astronomy #moon #histsci #ancienthistory #classics

3.14159...

In 2022, Emma Haruka Iwao calculated 100 trillion digits of #pi surpassing her 2019 effort.
2024 record is 105 trillion digits by Ranous, O'Brien, & Beeler.

Emma Haruka Iwao #Piday #WomenInSTEM #womenshistorymonth #mathematics #stem

A new publication features the use of ADS as a best practice in establishing and maintaining bibliographies for observatories wishing to measure and evaluate the scientific output and overall impact of their facilities. Read the open access article here: s.si.edu/3IkO8V0