Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Stack Overflow
Q&A for professional and enthusiast programmers
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Astronomy
Q&A for astronomers and astrophysicists
Super User
Q&A for computer enthusiasts and power users
Photography
Q&A for professional, enthusiast and amateur photographers
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Physics
Q&A for active researchers, academics and students of physics
Mathematics
Q&A for people studying math at any level and professionals in related fields
Video Production
Q&A for engineers, producers, editors and enthusiasts spanning the fields of video and media creation
Engineering
Q&A for professionals and students of engineering
Software Recommendations
Q&A for people seeking specific software recommendations
Reverse Engineering
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
Arduino
Q&A for developers of open-source hardware and software that is compatible with Arduino
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
Mathematica
Q&A for users of Wolfram Mathematica
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Internet of Things
Q&A for builders and users of networked sensors and control devices in the contexts of smart homes, industry automation, or environmental sensors
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Earth Science
Q&A for those interested in the geology, meteorology, oceanography, and environmental sciences
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle