#Solar cycle 25 is here. NASA, NOAA scientists explain what that means
“#Solar cycle 25 is here. NASA, NOAA scientists explain what that means” This split image shows the difference between an active Sun during solar maximum (on the left, captured in April 2014) and a quiet Sun during solar minimum (on the right, captured in December 2019). December 2019 marks the beginning of Solar Cycle 25,…