astronomy-picture-of-the-day-in-the-classroom

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APOD Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss Astronomy Picture of the Day (APOD) is being used as an educational resource in classrooms from elementary school to graduate school. Below, some teachers share how they have used APOD in their classrooms. If you have found APOD usefulContinue Reading

100th-anniversary-of-the-shapley-–-curtis-great-debate

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APOD Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss 1920: Scale of the Universe Debate  History & brief summaries: About the 1920 Greate Debate | Wikipedia | This Month in Astronomical History | Astronomy’s Great Remembrance Virginia Trimble: History of the Scale of the Universe Debate Deborah Shapley (Granddaughter): Harlow Shapley: Discovering Our Place in theContinue Reading

rjn’s-more-digits-of-irrational-numbers-page

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APOD Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss All digits accessible here were computed by Robert Nemiroff and Jerry Bonnell on a VMS Alpha. They are not copyrighted and we do not think it is legally justifiable to copyright such a basic thing as the digitsContinue Reading

astronomy-picture-of-the-day’s-frequently-asked-questions-(faq)

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APOD Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss Q1: What does APOD stand for? A1: APOD stands for the Astronomy Picture of the Day. We abbreviate this as APOD instead of ApotD because APOD sounds better (spoken: AYE-pod).  Q2: How can I easily see yesterday’s APOD? A2: Click theContinue Reading

glossary-of-commonly-used-terms-and-abbreviations-in-the-100th-anniversary-debate

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biosignature:  A biological marker of life. For example, DNA.  Drake Equation:  A simple equation used to estimate the abundance of intelligent and communicative life in our galaxy exoplanet:  A planet orbiting a distant star. HabEx:  Habitable Exoplanet Imaging Mission IR:  Infrared JWST:  James Webb Space Telescope Kepler:  Kepler space telescope LUVOIR:  LargeContinue Reading

NASA, Boeing to Provide Update on Starliner Development

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Lauren E. Low Sep 25, 2026 During a news conference at 3 p.m. EDT on Monday, Sept. 28, NASA and Boeing leadership will discuss Starliner’s development and plans for regular crew flights to and from the International Space Station. Learn where to watch online: https://www.nasa.gov/live The briefing participants include: NASA Administrator Jared Isaacman Dana WeigelContinue Reading

Let’s Do Some Leaf-Peeping From Space

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Fall is officially here. Thanks to the roughly 23-degree tilt in Earth’s axis, the days are now growing shorter and colder in the northern hemisphere. That means deciduous trees are shedding their green chlorophyll and giving us a peek at the reds, oranges, golds, and browns they’ve been hiding all year.  While peak leaf-peeping seasonContinue Reading