BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Four pears: green Bartlett (Williams), D'Anjou, Forelle, and red Bartlett (Williams)
gravitational lens was observed in 1979. English This picture shows gravitational lens G2237 + 0305 — sometimes referred to as the Einstein Cross. It shows four images
English Four-banded Longhorn Beetle Estonian Harilik kiitsaksikk German Vierbindiger Schmalbock author name string: Ivar Leidus Wikimedia username: Iifar