How to fly

• Hold Fly out to travel. Let go and you coast to a stop.
• Press Fly to hold the throttle open and travel hands-free. Press it again to stop.
• Hold Fly back, or S, to return toward Earth
• The arrows turn your view, and the flight leans with it — up to fifteen degrees. A journey is always a line out from Earth, so you can lean it, never turn it around.
• Every button is a key: Fly out is Space, Fly back is S, the arrows are the arrow keys.
• The scroll wheel is a throttle: forward speeds up, back flies home
• Names appear as you pass things — tap one to read about it
• A chevron on the edge means something named is out of view — turn that way to see it.

The big number is how far you are from Earth. Its units change as you climb.

The number under the distance is how fast you are going. Holding one steady throttle in log-space means the real speed climbs the whole way out.

The dots on the right are the milestones of the journey you chose. Click one to fly there — any input on the way takes the controls back.

Free flight unlocks at the edge: every named star gets a label you can click.