Readers react to cosmic smashups and tricky spacecraft landings

A smash hit

In “A complete collection of cosmic smashups” (SN: 1/30/21, p. 30), Emily Conover and Nadieh Bremer visualized every gravitational wave event spotted so far.

Freelance data visualization designer Nadieh Bremer “reduced an excruciatingly complex subject, gravitational waves produced by cosmic collisions, into a very interesting graphic.