Sun. Jun 20th, 2021
solar minumum

Solar minimum is the period of least solar activity in the 11-year solar cycle of the Sun. During this time, sunspot and solar flare activity diminishes, and often does not occur for days at a time.

During solar minimum, the effects of Earth’s upper atmosphere on satellites in low Earth orbit changes too. Normally Earth’s upper atmosphere is heated and puffed up by ultraviolet radiation from the sun. Satellites in low Earth orbit experience friction as they skim through the outskirts of our atmosphere

The Sun is currently going through a less active phase called a solar minimum.

That’s when the sun is much quieter, meaning fewer sunspots and energy.

Scientists at NASA say we’re in a “grand solar minimum,” the last time that happened was between 1650 and 1715.

During that time, there was the little ice age in earth’s northern hemisphere.

Scientists say this solar minimum won’t spark another mini ice age because of climate change.

And they knew this one was coming because it’s a regular aspect of the Sun’s cycle.

Scientists at NASA say we’re currently in a “Grand Solar Minimum.” The last time this occurred was between 1650 and 1715, during what’s known as the Little Ice Age in Earth’s Northern Hemisphere, “when combination of cooling from volcanic aerosols and low solar activity produced lower surface temperatures,” according to NASA’s Global Climate Change blog.

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