A deep partial solar eclipse will be visible on Sunday, Sept. 21 — but don’t plan a watch party just yet. Only about 16 million people, or 0.2% of the Earth’s population, will be able to view the ...

The sun is not a static, tranquil sphere of gas, but an active, turbulent star with magnetic fields that twist and snap in powerful eruptions. Among the most striking and energetic of these eruptions ...

If you stop to think about it, it’s a marvel that we can harness energy from the sun. But we do, thanks to solar panels equipped with photovoltaic cells that convert sunlight to electricity. That’s no ...