Sun's activity in 18th century was similar to that now
Monday, February 9, 2015 - 14:30
in Astronomy & Space
Counting sunspots over time helps in knowing the activity of our star but the two indices used by scientists disagree on dates prior to 1885. Now an international team of researchers has tried to standardise the historical results and has discovered that, contrary to what one may think, the solar activity of our times is very similar to that of other times, such as the Enlightenment.