This clears the builder and starts from scratch. Any changes you haven't saved to the planet you're working on will be lost.
Open any planet's surface view on your phone and look around just by moving it: hold it up, turn on the spot, and the view turns with you. In Chrome on Android you also get a VR button, in the row along the bottom:
Tap it, drop your phone into a headset viewer, and you're standing on the ground under a star that isn't ours. It only appears where your browser can do VR.
We're still building out the best experience we can — and we'd love your input. Tell us about features you enjoy, ideas you'd like to see, or pain points where something feels off, and we'll know where to look next.