If you should want to observe a Toba or Yellowstone supervolcano exploding from 10 parsecs away.
Ostberg et al. 2024, "The Prospect of Detecting Volcanic Signatures on an ExoEarth Using Direct Imaging" - https://www.hou.usra.edu/meetings/lpsc2024/pdf/2494.pdf
via @fraser
("Direct Imaging" is a term of art here. It refers to planets being imaged separately from stars, but still appearing as dots - just very interesting ones. The aerosols & gas from an eruption would show up in disc-integrated spectra.)











