When sunspots erupt at nearly the same time, it could be something known as "sympathetic solar flares." A double eruption ...

Sunspots are the most striking phenomenon of the solar magnetic field. After the invention of the telescope early in the 17th ...

After witnessing the array of Northern Lights as far south as Colorado, we discuss how Coronal Mass Ejections (CME) are formed and what impact they have on Earth.

Solar Maximum 2025 is the expected peak of solar activity in Solar Cycle 25, characterized by heightened sunspots, solar ...

Two spacecraft are currently directly observing the Sun: NASA's Parker Solar Probe (which will eventually approach to just 5% of the Earth-Sun distance), and ESA's Solar Orbiter, which is en route to ...

Sunspots are cooler, planet-size regions of strong magnetic fields on the surface of the sun. Explore sunspots in more detail with our comprehensive guide.

Sunspots, which on average are the size of Earth, appear darker than the rest of the sun because they’re cooler and can cause solar flares when magnetic field lines are crossed. Some of AR3576's ...

When sunspots waned, prices rose. He suggested that shifts in grain prices were a stand-in for shifts in climate. Large numbers of sunspots led to a warmer sun, he reasoned.

Sunspots are dark, cooler patches on the Sun’s surface that come and go in a roughly 11-year cycle, first noticed in 1843. They have gone away before.

Most sunspots are a few thousand kilometers across and too small to see without aid from binoculars or a telescope. But some grow to enormous size, tens of thousands of kilometers across or more.

*Sunspots. Differences in the rotation between the Sun's equator and poles amplify the solar magnetic field until it bursts through to the surface as "sunspots".