Academic
Nick Cowan's group — PhD advisor, McGill University
Fred Rasio's group — PhD committee chair, Northwestern University
Trottier Space Institute — interdisciplinary center at McGill
Trottier Institute for Research on Exoplanets — Université de Montréal
CIERA — astrophysics center at Northwestern
International Space Science Institute — research host in Bern, Switzerland
Science
James Webb Space Telescope — flagship NASA/ESA/CSA observatory
The Extrasolar Planets Encyclopaedia — what it says
Exoplanets.org — archived home of the Exoplanet Orbit Database
The Exo-Cartography Inverse Problem — archived international project hosted at the ISSI
Publication
Astrophysical Data System (ADS) — digital library portal for astronomy and physics
Google Scholar — search engine for academic literature
arXiv — open archive for research articles, especially physics, math and computer science
Coding
GitHub — collaborative platform for developing code and more
Python — popular programming language with many libraries
Anaconda — common Python distribution for data science
Jupyter — flexible notebook-style environment based on IPython
Matplotlib — Python library for creating plots and figures
emcee — efficient MCMC ensemble sampler for Python (Dan Foreman-Mackey)
LMFIT — non-linear optimization and curve fitting suite for Python
Mathematica — Wolfram paid software for technical computing
VEXcode VR — online free and paid Virtual Robots coding from VEX
NetLogo — free agent-based programming and modeling for all skill levels
Outreach
NASA's Eyes — immersive apps on the Earth, Solar System and exoplanets
NASA Exoplanet Exploration — comprehensive background info and news
Reach for the Stars — former GK-12 program at Northwestern with free classroom materials
VEX Robotics — free and paid educational resource for robot building and competitions
If the Moon Were Only 1 Pixel — "a tediously accurate scale model of the Solar System" (Josh Worth)
Nicky Case — cool designer making stuff you can play, read and watch
How Global Warming Works — good, clear explanations from UC Berkeley scientists
PBS Space Time — web series about space, astrophysics, sci-fi and more (Matthew O'Dowd host)
3Blue1Brown — visualizing math and related fields with serene animations (Grant Sanderson)
TED-Ed — bite-sized questions, riddles and ideas to spark anyone's curiosity
Other
Astronomy and Astrophysics Outlist — I signed, for open [infinite LGBT acronym] and allies
Wolfram Alpha — dynamic computational answers, now connected with ChatGPT
CLEP Exams — like class-less AP tests, college credits for things you know
Jeff's Flickr — photo albums by my brother, a Grand Canyon backcountry ranger
Ambient — music channel that's one of my staples, great for working or relaxing
Seterra — fun quizzes to learn world geography, both online and mobile