Various molecules, atoms and particulates float around in the air, and these reflect light ... A decently dark site in a rural area has a sky background of about 21 mag/arcsec 2.

The appearance of an extraordinary spiral of blue light in the sky above New Zealand ... who runs star-gazing business Twinkle Dark Sky Tours, spotted the spectacle from the country's Stewart ...

Handzel is San Diego County chapter vice president of the International Dark Sky Association and lives ... American Medical Association’s 2016 blue light guidance which concluded lighting ...

A super treat is in store for sky watchers in August 2023: Two supermoons, including one “blue moon,” will be ... as many as 100 meteors per hour in dark locations, assuming the sky is clear.

Now, a new study has found that the night sky may actually be brightening ... "[And] when our eyes are dark adapted, they're more sensitive to blue light. So replacing that long-wavelength ...

On December 14, 2022, the district administration of Ladakh designated six hamlets within the Changthang Wildlife Sanctuary a “dark-sky reserve ... to ‘sense’ blue light emitted ...

Earlier this year, in a letter to the journal Science, two American astronomers introduced a new term to capture the loss of our ability to observe the night skies due to light pollution.