A mysterious, 100-year solar cycle may have just restarted — and it could mean decades of dangerous space weather

New research suggests that the unexpected intensity of the ongoing solar maximum may be partly tied to a lesser-known, 100-year solar cycle. If true, solar activity could spike further in the coming decades. But some experts are skeptical.

Apr 17, 2025 - 16:04
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A mysterious, 100-year solar cycle may have just restarted — and it could mean decades of dangerous space weather
New research suggests that the unexpected intensity of the ongoing solar maximum may be partly tied to a lesser-known, 100-year solar cycle. If true, solar activity could spike further in the coming decades. But some experts are skeptical.