C. Gall

The Euclid space telescope, designed to study dark energy, accidentally detected 164 transient flashes. Astronomers measured brightness in different wavelengths to understand the nature of stellar explosions and discovered hidden galaxies.

Astronomers have searched for decades for the object left behind by supernova 1987A. Webb finally saw it: a neutron star that is accelerating gas and flying sideways. By measuring its displacement, scientists determined its speed — 500 km/s, as if someone gave it a stellar 'kick'.