Summer solstice marks the year's longest day and the official start of astronomical summer.

This week's science news.

For all of human history, the Sun has served as a great constant in daily life. As this brilliant orb blazes across the sky, it sustaind life, provides harmonious rhythms to our world, and marks the ...

Beautiful curtains of pink and green light swirled in night skies around the world in May during one of the strongest displays of auroras in half a millennium. The source of that light show was the ...

Parker's instruments are gathering measurements while the Sun is in an active phase of its 11-year solar cycle, a period ...

The summer solstice doesn’t arrive with a visual cue you can easily notice from a rooftop or a backyard. In New York City, ...

Scientists have uncovered previously hidden changes in the Sun's solar activity over the last 40 years, which could affect ...

For many years now, the activity of the Sun’s 11-year solar cycle has been gauged through visible indications like sunspots, ...

In August last year, the Sun began to throw a tantrum. Clusters of dark spots appeared on its face, marking regions where magnetic fields were knotting and twisting its surface. By early September, ...

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Almost every day the Sun is out, keeping us warm and illuminating our days, giving us the energy to be living beings on Earth. (Well, OK, some places are cloudier than others, but the Sun occasionally ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.