Close any browser pages or applications that do heavy-duty
graphics. Do this the first few times you use the
Planetarium, until you feel confident that your system doesn't
have a problem running the Planetarium.
Refer to the Quick Reference to
find how to do what you want to do.
If Your System Has Problems
If the Planetarium doesn't work on your device, see
the Requirements page to find out
if your system is supported. If it should be supported but still
has problems, look at
Troubleshooting,
further down on that page.
A Note on Privacy
The Planetarium is a static web page,
running a large Javascript application. It does not communicate
with the web server using cookies. It uses the browser's
persistent storage to save your control settings between sessions.