26.3m Members

This community is a place to share and discuss new scientific research. Read about the latest advances in astronomy, biology, medicine, physics, social science, and more. Find and submit new publications and popular science coverage of current research.

20.7m Members

Ask a science question, get a science answer.

All Futurism
18.5m Members

Share & discuss informative content on: * Astrophysics * Cosmology * Space Exploration * Planetary Science * Astrobiology

Space Sciences Aerospace
15.3m Members

Welcome to r/Futurology, a subreddit devoted to the field of Future(s) Studies and speculation about the development of humanity, technology, and civilization.

Machine Learning/Deep Learning Futurism All
3.6m Members

A place for the best guides, pictures, and discussions of all things related to plants and their care.

Gardening Botany General farming/Agriculture Agricultural
2.3m Members

A subreddit for discussing the Raspberry Pi ARM computer and all things related to it.

Computer Science / Engineering Electrical Programming Robotics Computer Science Embedded Systems
2.3m Members

Biology Botany
2.2m Members

A subreddit for all questions related to programming in any language.

Computer Science Robotics Technology Programming Web Development/webdev Computer Science / Engineering
1.9m Members

The amateur hobby of humanity since the dawn of time and scientific study of celestial objects.

Space Sciences
1.9m Members

Machine Learning/Deep Learning Industrial Python Futurism Computer Science / Engineering AI Programming Robotics Computer Science
1.8m Members

r/NASA is for anything related to the National Aeronautics and Space Administration; the latest news, events, current and future missions, and more.

Space Sciences Futurism
1.7m Members

SpacePorn is a subreddit devoted to beautiful space images 🚀🌌. As long as the focus of the image is related to space in some way, it is allowed. This includes photographs, composites, photoshops, simulation renders, artist's depictions, and artwork.

Nature Space Sciences
1.7m Members

The aim of /r/Physics is to build a subreddit frequented by physicists, scientists, and those with a passion for physics. Papers from physics journals (free or otherwise) are encouraged. Posts should be pertinent, meme-free, and generate a discussion about physics. Please report trolls and incorrect/misleading comments.

Futurism Physics
1.6m Members

Gifs are great at getting quick to digest info, and /r/educationalgifs strives to give you educational info in this quick to digest format. From chemical processes, to how plants work, to how machines work, /r/educationalgifs will explain many processes in the quick to see format of gifs.

All Science/Gadgets
1.6m Members

Images of space, taken by amateurs.

Space Sciences
1.4m Members

News and discussion about economics, from the perspective of economists.

Economics General
1.4m Members

A community for chemists and those who love chemistry

1.4m Members

Computer Science Theory and Application. We share and discuss any content that computer scientists find interesting. People from all walks of life welcome, including hackers, hobbyists, professionals, and academics.

Computer Science / Engineering Programming AI Technology Computer Science Embedded Systems
1.3m Members

High quality images of machines and machinery.

Mechanical Things/Man Made
980.9k Members

Welcome to r/SpaceX, the premier SpaceX discussion community and the largest fan-run board on the American aerospace company SpaceX. We recommend using r/SpaceX with Old Reddit. This board is not an official outlet for SpaceX information.

Aerospace Space Sciences Futurism
883.4k Members

A Reddit community for sharing and discussing science-based psychological material.

Personal Issues Relationships General Mental Health Other Self Help
840.8k Members

And they said math has no real world applications

823.4k Members

Anything related to aircraft, airplanes, aviation and flying. Helicopters & rotorcraft, airships, balloons, paragliders, winged suits and anything that sustains you in the air is acceptable to post here.

732.6k Members

Current news, information and issues related to the environment.

Earth Sciences farming/Agriculture General Botany Climate Change
707.7k Members

575.0k Members

A subreddit showcasing the complexity of those lovely little atoms, as well as other interesting science topics in gif form.

Chemistry Science/Gadgets
530.9k Members

A subreddit for the identification of plants. Visitors are encouraged to submit requests as well as help out with identification.

General Botany Gardening Agricultural
515.8k Members

A subreddit for those with questions about working in the tech industry or in a computer-science-related job.

Career Related Technology Computer Science Computer Science / Engineering Programming
482.5k Members

A place for data science practitioners and professionals to discuss and debate data science career questions.

Computer Science Computer Science / Engineering AI Programming Machine Learning/Deep Learning Big Data/Data Analytics
386.6k Members

This is a place for engineering students of any discipline to discuss study methods, get homework help, get job search advice, and find a compassionate ear when you get a 40% on your midterm after studying all night.

General Civil
366.7k Members

r/engineering is a forum for engineering professionals to share information, knowledge, experience related to the principles & practices of the numerous engineering disciplines. r/engineering is **NOT** for students to ask for guidance on selecting their major, or for homework / project help. Read the sidebar BEFORE posting.

Robotics Embedded Systems Civil General
349.2k Members

/r/medicine is a virtual lounge for physicians and other medical professionals from around the world to talk about the latest advances, controversies, ask questions of each other, have a laugh, or share a difficult moment. This is a highly moderated subreddit. Please read the rules carefully before posting or commenting.

Healthcare Med School Pharmacology
309.8k Members

/r/EverythingScience is the sister subreddit to /r/science. With a broader rule set than /r/science, it is the place for high quality scientific content that doesn't necessarily reference a peer-reviewed paper from the last 6 months.

307.8k Members

for the love of fungi :: hunting, foraging, cultivation, images( mycoporn ), research, questions & general discussion

General Botany Specific Food Gardening Agricultural
290.5k Members

Geopolitics is focused on the relationship between politics and territory. Through geopolitics we attempt to analyze and predict the actions and decisions of nations, or other forms of political power, by means of their geographical characteristics and location in the world. In a broader sense, geopolitics studies the general relations between countries on a global scale. Here we analyse local events in terms of the bigger, global picture.

General Earth Sciences Terrorism
289.1k Members

Got lab stories? Experiments gone wrong? PIs gone AWOL? Need help with your experiments? Share your stories!

PHD/Academia Genetics All
287.8k Members

A place for all things Arduino!

Electrical Programming Computer Science / Engineering Computer Science Embedded Systems
264.5k Members

/r/WeatherGifs is a sub for gifs and videos of all naturally-occurring meteorological phenomena.

Earth Sciences
247.4k Members

This is a technical ELECTRONIC ENGINEERING subreddit, covering practical, component-level circuit design and repair questions, electronics theory, electronic components, tools and equipment. We don't cover the setup or purchase of commercial, off-the-shelf electrical or electronic goods, computers, computing equipment, spares for domestic appliances, batteries and chargers, power adapters or mains/low voltage lighting (including LED) - see below.

Robotics Embedded Systems Electrical Gadgets
235.4k Members

A subreddit dedicated to news, articles and general discussions related to electronic circuits, with a specific emphasis on component-level circuit design. NOTE: *Questions* about components, circuits and tools should be posted in /r/AskElectronics .

Embedded Systems Electrical
234.7k Members

Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines.

Embedded Systems Robotics General
221.4k Members

Post all of your math-learning resources here. Questions, no matter how basic, will be answered (to the best ability of the online subscribers).

169.5k Members

GIFs that show physics principles at work in the real world or in a simulation.

Physics Science/Gadgets
161.9k Members

This community is for discussion among pilots, students, instructors and aviation professionals.

153.4k Members

The official subreddit of Kurzgesagt.

144.2k Members

A place for discussing and learning about Robotics

AI Electrical Industrial Robotics Drones Embedded Systems Futurism Computer Science / Engineering
140.2k Members

Reddit's home for Artificial Intelligence

Computer Science Machine Learning/Deep Learning Futurism Programming Computer Science / Engineering Robotics
136.6k Members

For all those who love to fly the virtual skies. Please note, accounts less than 4 days old cannot post or comment.

Genre-specific Aerospace
131.6k Members

Biology Reptiles
124.1k Members

Sustainability is the ability of system to endure. While most people associate the term with the environment, true longevity requires social and economical sustainability as well as ecological sustainability.

Earth Sciences Biology General Climate Change