Education
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Space NOW Blog
The National Space Centre's blog with news from space and the facts behind space science, missions and people, written b…
Spacehack
A directory of ways ordinary people can take part in space exploration, from classifying galaxies and black holes to map…
spaceprob.es
A catalog of the active human-made machines scattered across our solar system, with their distance, launch and mission d…
SpanishDict
A popular English-Spanish dictionary and translator with over a million words and phrases, plus conjugations and learnin…
Speak Pashto
A practical online guide to learning Pashto, the language spoken in Pakistan's Khyber Pakhtunkhwa region, written for En…
Speaking of Geoscience
The official blog of the Geological Society of America, with posts from geoscientists on research, field work, and Earth…
Specialized Signs
A specialized American Sign Language dictionary from Austin Community College Interpreter Services, covering technical a…
Spectacles in the Roman World
A free open textbook collecting ancient writings on Roman spectacles - gladiators, chariot races, theatres and beast hun…
Spectral Codex
Photo essays, road trips and a geospatial atlas of temples, ruins and odd places across Taiwan and East Asia, organised…
SpeedCubeDB
A free speedcubing database of algorithms and solve reconstructions for every puzzle from 2x2 to 6x6, Square-1, Pyraminx…
Sphere Computers
A deep archive of the Sphere, a forgotten 1975 Motorola 6800 personal computer, with its history, photos, scanned manual…
Spheres of Influence
A volunteer-powered, youth-led journalism site on international relations that centers underreported voices and perspect…
Sphinx
Classicist Neville Morley's blog exploring antiquity and modernity, with essays linking the ancient world to modern poli…
Spiral
The Rubin Museum's online journal on the meeting of art, science, and Himalayan cultures, with videos, articles, and pod…
Spite Work
A reconsideration of the Fatty Arbuckle case of 1921-22 and of the life and death of Virginia Rappe, the victim, told th…
Split Lip Magazine
A literary journal devoted to voice-driven writing, pop culture, and unvarnished honesty, publishing new fiction and cre…
Spoon Graphics
Chris Spooner's graphic design blog with Photoshop and Illustrator tutorials, design articles, and free resources for bu…
Spread the Sign
A multilingual online sign language dictionary covering dozens of national sign languages with video demonstrations for…
Spreadsheets Are All You Need
Learn how large language models and other AI work by following along with real spreadsheets, using familiar formulas ins…
SPUR
A San Francisco Bay Area nonprofit publishing research, policy analysis, and articles on housing, transportation, and ur…
Squeaky's Recorder Playhouse
A charming old-web tutorial on playing the recorder, covering fingering, blowing and tonguing basics with linked lessons…
Standard Ebooks
A volunteer project producing beautifully typeset, carefully proofread, and completely free ebook editions of public dom…
Stanford CS224d
Course site for Stanford's deep learning for natural language processing class, with lecture slides, notes, and assignme…
Stanford CS231n
The public home of Stanford's deep learning for computer vision course, with lecture notes, slides, and assignments wide…
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