Sky Notes
Small notes for looking up.
Clear, sourced stories for curious skywatchers. A place to follow an idea from the page back to the night sky.
Research note
When a pattern is not a family
A new census of nearby stellar groups is a reminder that constellations are patterns in perspective: stars that look close together can be separated by immense distances.
Research note
Why some white dwarfs could look green—up close
A new study explores how exceptionally dense, metal-containing white dwarf atmospheres can make their resolved discs appear in surprising colours. It is not a claim that naked-eye stars are green.