The gravitational waves they emitted were fiercely powerful, but where did the black holes come from?
10 January 2022 Issue #391
13 January 2022 Issue #392
Plus: the chance of the Milky Way and Andromeda colliding just went up. Maybe.
May 30, 2019 Issue #118
8 November 2021 Issue #373
Combining images from Hubble and JWST provides an incredible view of a gorgeous galaxy cluster
At a redshift of 15, that would be trouble for our understanding of the Universe. But it might just be a closer galaxy trying to fool us.
