TWO YOUTUBE CHANNELS
Our latest videos
Watch videos from both channels, or explore one of our free simulations.
Explore our free simulations ↓INTERACTIVE SCIENCE
Free simulations
Explore Earth, gravity, planetary motion and impact physics.
All simulations ↗FEATURED SIMULATION
Spacetime explorer
Explore the solar system in a 3D grid. Select a planet, move around it and adjust the orbit speed.
THE SOLAR SYSTEM
Sun-centered view. Drag to rotate.
Drag to rotate. Tap a planet to follow it. Use + and − to zoom. On phones, drag sideways; swipe up or down to scroll the page.
The grid illustrates gravity. Planet sizes, distances and bending are exaggerated for visibility.
THE COSMIC DISPATCH / EVERY SUNDAY
Join our newsletter
Our latest video, a popular Short, a discovery, a science fact and a simulation to explore. Free, every Sunday.
THE DAILY BRIEFING /
Daily news
astronomy
JWST Tracks Over One Hundred Magnified Stellar Events in the Dragon Galaxy
Using the James Webb Space Telescope, astronomers identified 104 magnified stellar events in the distant Dragon galaxy, more than doubling previous records for a single system.
Read the story ↗space physics
Space Weather Substorms Link Auroras to Rapid Ground Power Grid Disturbances
Researchers analyzing data from NASA and NOAA spacecraft alongside Canadian magnetometers found that magnetotail energy releases during substorms impact Earth's surface within minutes.
Read the story ↗spaceflight
ESA Cubesat Executes First Orbital Voice Command to Launch Game of Doom
Radio amateur operators successfully transmitted a voice command to the ESA-linked PRETTY cubesat in orbit, marking a milestone in spacecraft voice control.
Read the story ↗Science news with source links. Previous editions are available in the news archive.
FROM BOTH CHANNELS
Short videos
COSMOKNOWLEDGE MERCH
T-shirts, hoodies
and art prints
Original designs from Cosmoknowledge. Purchases help fund our videos and simulations.
Shop the collection ↗
Cosmoknowledge Logo Tee
From $25 USD
I Can See Uranus From Here Hoodie
From $45 USD
I Can See Uranus From Here Art Print
From $18 USDMade to order. Shipping and taxes calculated at checkout.
YOUTUBE MEMBERSHIP
Support Cosmoknowledge
Membership helps fund our free videos and simulations. Type 1 includes early access and channel perks. Type 2 also includes full researcher interviews.
Become a member ↗Type 1 Civilization: $3.99/moType 2 Civilization: $7.99/mo
USD. YouTube shows local pricing before joining. Full interviews require Type 2.
ABOUT COSMOKNOWLEDGE
Our channels
and community
We explain space and science through videos, animation and interactive simulations.
About us ↗CosmoknowledgeChecked 827KCosmoknowledge AnimatedChecked 16.6KFacebook2.1MTikTok1.2MInstagram543.7KX2.3K
Other platforms checked 2026-10-16. Audiences may overlap.