Planck Standard

Topic

Sun

10 stories from Planck Standard. Latest: October 17, 2026.

  1. Science

    The Sun's 1947 Sunspot Was 40 Earths Across

    Max Planck and University of Colorado researchers tied the energy of the 300 strongest flares of 2010–2016 to the size of the active regions that produced them, then applied the relationship to 400 years of sunspot records. The biggest spot ever logged could, statistically, have fired a burst beyond anything ever measured on our star.

    4 min read