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soap bubble

THIN ICE  A patchwork of ice crystals swirls across the surface of a soap bubble as it freezes. The glittery display is caused by a mismatch in surface tension in different regions of the soapy film.

satellite illustration

FREE-FALLIN’  Scientists compared the acceleration of two objects in free fall in a satellite orbiting 710 kilometers above Earth (illustrated).

Halszkaraptor escuilliei

DINO SWIMMER  This birdlike dinosaur, Halszkaraptor escuilliei, probably spent a lot of time in the water. It had flipperlike forelimbs, a long neck for snatching aquatic food, and its upright posture resembles that of short-tailed birds such as ducks.

illustration of 'Oumuamua

ALIEN ASTEROID  This artist’s representation of interstellar asteroid ‘Oumuamua shows its unusual shape: 400 meters long and just about 40 meters wide. No asteroids in the solar system are shaped like that. 



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