Learn space, simply
Everything you see in Cosmik, explained in plain language — from why stars shine to how we still talk to Voyager. Each explainer links straight to the live 3D view.
- What is a star?A star is a giant sphere of plasma held together by gravity and powered by nuclear fusion. How stars ignite, live for millions to trillions of years, and die — explained simply.
- What is the Deep Space Network?The Deep Space Network (DSN) is NASA's system of giant radio antennas in California, Spain and Australia that communicates with every deep-space probe — including Voyager 1, 25 billion km away.
- What is an orbit?An orbit is a continuous fall around a planet: satellites move sideways so fast (7.7 km/s in LEO) that they keep missing the Earth. LEO, MEO, GEO and how trackers predict positions, explained.
- What is the ISS?The International Space Station is a football-field-sized laboratory orbiting 400 km up at 28,000 km/h, crewed continuously since November 2000. What it does and how to spot it with your eyes.
- What is a satellite constellation?A satellite constellation is a coordinated fleet working as one system: Starlink's 10,000+ satellites for internet, GPS's 31 for navigation. How they work and why they're transforming the sky.
- How do rocket launches work?Why launches have exact windows, why they scrub, and what happens from T-0 to orbit — the 8-minute journey from the pad to 28,000 km/h, explained simply.
- What happens when a satellite falls?Dead satellites don't stay up forever: atmospheric drag pulls them down until they re-enter at 28,000 km/h and mostly burn up as artificial meteors. When they fall and what survives.
- What is space debris?Over 36,000 tracked debris objects and an estimated 130 million fragments too small to track orbit Earth at bullet speeds. Where junk comes from, conjunction warnings, and Kessler syndrome.