The European mission will scan the skies so we can understand the structure of the Universe. It also makes for some danged pretty pictures.
December 17, 2018 Issue #71
October 10, 2022 Issue #471
24 May 2021 Issue #325
15 February 2021 Issue #297
Dark matter makes up about 80% of all known matter. Except in NGC 1277, for some reason.
Answer: Pretty danged hard. Also: The origin story of ultra compact dwarf galaxies.
April 15, 2019 Issue #105
May 13, 2019 Issue #113
06 January 2020 Issue #181
It’s a weird galaxy, but it may be even weirder than we thought