This week in science

NASA’s Lucy mission launches and more: Understand the world through 8 images

NASA

A trip to the Trojan asteroids begins as an unconventional crew returns to Earth...

Here are the biggest science stories of October 14–20, told in 8 amazing images.

Elizabeth Clark and Javier Luque

8. Cretaceous crab

Javier Luque and Lida Xing