Solar Cycle 25 by NASA.
                     Solar Cycle 25 
by NASA
INTRODUCTION
•Solar Cycle 25 in now underway, 
as NASA and NOAA announced on 
September 15, 2020. 
•This means that our star, the Sun, has 
passed from one of its 11-year activity 
cycles into another.
Source: almanac.com/
WHAT IS SOLAR CYCLE?
•The solar cycle can be defined as the 
solar cycle is the cycle that the Sun’s 
magnetic field goes through 
approximately every 11 years.
• NASA’s forecast for the next solar 
cycle (25) reveals it will be the weakest 
of the last 200 years.
Source: NASA
MAGNETIC FLOW 
• There seems to be an ebb and flow or 
“cycle” to this magnetic flow and 
movement.
•In a solar cycle, there is a “minimum” 
when the Sun is least active and a 
“maximum” when the Sun is the most 
active. 
Source: Wikipedia
SUN SPOT
• In areas where the magnetic fields are 
particularly strong, we may see a black 
spot called a sunspot emerge on the 
surface of the Sun. 
•This is indicative of a sun storm and a 
lot of activity beneath the surface. 
•More sunspots means more solar 
activity.
Source: NASA
SOLAR CYCLE 24 
• Solar Cycle 24 was the most recent 
solar cycle, the 24th since 1755, when 
extensive recording of solar sunspot 
activity began.
•Solar Cycle 24 lasted 11 years, which is 
average, though it was the weakest 
cycle in 100 years. 
Source: almanac.com/
SOLAR CYCLE 25 
• As Solar Cycle 25 begins, we are 
coming out of the minimum or bottom 
of the cycles which happened in 
December 2019 when the sunspot 
numbers fell to its lowest in 13 month 
(with sunspots at only 1.8).
• Solar maximum occurred in April 2014 
with sunspots peaking at 114 for the 
solar cycle, well below average, which 
is 179. Source: spaceweatherlive.com/
SOLAR CYCLE 25 PREDICTIONS
PREDICTION: 1
• Cycle 25 will be similar in size to Cycle 
24, preceded by a long, deep minimum. 
•Solar Cycle 25 may have a slow start, 
but is anticipated to peak with solar 
maximum occurring between 2023 and 
2026, and a sunspot range of 95 to 
130. 
•This is well below the average number 
of sunspots, which typically ranges 
Source: spaceweatherlive.com/
from 140 to 220 sunspots per 
solar cycle.”
PREDICTION: 2
• Solar Maximum (Peak):   between 2023 
and 2026.
•Specifically, the experts predicted: a 
peak in July, 2025 (+/- 8 months), with 
a smoothed sunspot number (SSN) of 
115.
Source: NASA
PREDICTION: 3
• The panel agreed that Cycle 25 will be 
average in intensity and similar to 
Cycle 24, and its peak will be similar 
as well.
•Additionally, the panel concurred that 
solar minimum between Cycles 24 and 
25 will occur in April, 2020 (+/- 
6 months). 
Source: Earthsky
CONCLUSION
• In other words, expect the rest of 2020 
to be very quiet with low solar activity. 
•This is not to say there won’t be some 
solar storms, but it should be relatively 
uneventful.
Source: The Indian Express