Put on your Quest 3 and press Enter VR. On desktop, drag to look around and use the panels below.
Quest: hold Grip and twist your wrist to dial time · left stick scrubs · Grip on a planet / star / galaxy picks it up · Trigger selects galaxies, stars and buttons · right stick zooms/turns · A play · B back · X shrink info panel · Y help
Desktop: drag to look · wheel zoom · ←→ step eras · Space play · Esc back · G grid · M CMB · H help · C/I shrink panels · L hide labels · the — button on each panel shrinks it