During the day, the sky is so bright from this light that no stars (well, except the sun) can be seen ... sky brightness—what they call the sky background—they use a unit of brightness ...

Sounds like a bright idea. Scientists have received approval to soon test whether “dimming” the light from the sun will combat global warming — a strategy some critics have recently ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. “The sun never sets on the British empire.” Variations on the ...

The reversal could actually have a beneficial effect on Earth. The sun is on the verge of a significant event: a magnetic field reversal. The sun undergoes such a reversal every 11 years ...

A newly released image of the sun captured by the world’s largest solar telescope shows the surface of our nearest star in unprecedented detail, shedding light on its fiery complexity.

Use SPF 30+ sunscreen if you burn easily. 3—5: Moderate—Moderate risk of harm from unprotected sun exposure. Cover up, wear a hat and sunglasses. Use SPF 30+ sunscreen. Stay in the shade near ...

Writing in Physical Review Letters, An et al. present a search for proposed dark-matter particles called dark photons using radiation from the Sun ( H. An et al. Phys. Rev. Lett. 134, 171001 ...