The Sun has just shown a peculiarity not seen for several years: its surface has become completely uniform again, devoid of the usual dark zones that are sunspots.
These shadow regions, colder than the rest of the solar surface, result from intense magnetic fields. By preventing internal heat from rising, they create these visible marks. Their disappearance, even temporary, represents a notable indicator of our star's behavior.
A Sun without any spots, observed on February 22, 2026 by NASA's Solar Dynamics Observatory.
Credit: NASA/SDO and the AIA, EVE, HMI scientific teams
Our star goes through phases of intense agitation and relative calm during a cycle of approximately eleven years. When activity is at its maximum, sunspots multiply, accompanied by eruptions that project particles into space. Conversely, during the minimum, the surface can remain perfectly smooth for long weeks.
The calm period observed in early 2026 is remarkable because it had not occurred since June 2022. According to available data, this solar cycle therefore seems to be gradually heading towards a more tranquil phase. However, observers have reported the rapid appearance of new active zones, showing that the situation is constantly evolving.
Researchers indicate that solar activity should not reach its next low before 2030. The previous minimum, between 2018 and 2020, saw the Sun without spots for nearly two years.
These variations have concrete consequences for our planet. Solar eruptions can disrupt radio communications, affect satellites, and generate intense auroras. The reduction in the number of spots generally heralds a decrease in these phenomena.
Modern tools, such as space observatories, allow for continuous monitoring of the Sun. This capability is valuable for anticipating activity changes and understanding their mechanisms. The scientific community continues its analyses to refine prediction models.