Space Now - Real-time Solar System with 526k asteroids and all tracked satellites
Space Now is a real-time 3D visualization of our solar system, featuring 526,000 asteroids and 35,164 satellites and spacecraft. It includes 837 solar system bodies, from planets and moons to dwarf planets and comets, with accurate orbits from CelesTrak. Users can explore the heliosphere, Kuiper Belt, and Oort Cloud, and track constellations like Starlink and OneWeb. The interactive interface allows drag-to-rotate, zoom, click for info, and fly-through navigation with WASD controls. It's an educational and awe-inspiring tool for space enthusiasts, offering a comprehensive view of near-Earth objects and space debris.
Drag to rotate, wheel to zoom, click for info and orbit, double-click to fly to a body. WASD to fly, R/F up/down, Q/E and arrows to turn, Shift for speed. Click a group name to highlight it, 👁 for orbits.
- wanick
Author here. It's a browser view of the Solar System at real scale, with its current state, plus the objects around Earth from the CelesTrak catalog.
Data: CelesTrak TLEs (SGP4), asteroids and comets from JPL SBDB, spacecraft positions from JPL Horizons. Updated daily.
Rendering is WebGL2, orbit propagation runs in web workers. The asteroid set (~30 MB) loads in the background.
The time slider runs forwards and backwards; satellites appear and disappear by launch date.
- waylandsmithers
I did some star gazing at an official "dark place" and was really amazed at just how much constant motion you can see from satellites flying around
- FlowingRiver
Brilliant project and very well done.
That aside, it is just astounding that even a moderate laptop just plows through this as thought it is nothing.
I remember doing orbital calculations on a 486DX with about 30 objects at just barely 30fps thanks to the FPU. That was pretty good for me. Without the FPU you would get maybe 2FPS. Now, you can just throw a half million around at 60fps+ in a web browser. Crazy!
- marcd35
this is awesome! website is extremely fast and responsive, well done.
crazy to think how much technology is orbiting around the planet and not bumping into each other.
question - is James Webb intentionally making a heart shaped orbit? :)
- karim79
Beautiful site. I love how tranquil the scene becomes when satellites and spacecraft is unchecked. Thanks for that SpaceX (and others).
- climech
Just spent a little time following Europa Clipper, it will fly by Earth very soon! If you zoom out from Earth, it's already pretty close. This will be its second gravity assist after Mars. Very cool site!
- smusamashah
I had no idea that we there are SO many aesteroids that we keeping track of. How are we even doing that? How do we recognize one aesteroid from another?
- ev0lv
As of September 29, 2026, there are 16,613 active satellites in Earth orbit, 11,128 of them Starlink.
A fun fact: Kessler syndrome is a runaway chain reaction in orbit. Collisions create debris, and that debris causes more collisions, and when something breaks into pieces, its mass stays the same but its total surface area goes up, and reflected sunlight scales with area.
I submit to you that our kids' kids won't be able to see the milky way galaxy because of this litter.