W.M. Keck Observatory imagery of star system HR 8799 have been time-lapsed. The system hosts four planets that are more massive than Jupiter. Video making & motion interpolation: Jason Wang (UC ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

The planetary parade in February 2025 will see five bright planets in clear view and a special alignment of Mercury and ...