Probably Your web browser, graphic card or operating system doesn't support WebGL technology. You can get more information at Technical requirements
page and at Get WebGL
Moons are only visible at speed lower than 40 days per second and with scale bigger than "small".
Probably Your browser blocks popup windows. Allow to open popup windows by planetoweb.net and try again.
Just press space. Press space again to return to previous speed. You can also change speed with slider to disable pause.
Unfortunately it depends on browser. The furthest date you can set in Google Chrome is 13 September 275760
. However if you change speed, planets will still move, you just won't be able to see current date.
It's a security measure taken by your web browser. If you enable or disable fullscreen via F11 key on your keyboard, browser can block this feature for the application.
If you get this error every time, probably Your graphic card doesn't support WebGL good enough for Planetoweb.
If you get this error only sometimes, it can mean:
- temporary lack of RAM memory
- unstable graphic card drivers
- unstable web browser
Describe your problem and contact us via contact form