Continuous exposure to artificial light at nighttime can put people at an increased risk of stroke, new research warns. “We ...

18 degrees east of the sun and at a magnitude of –0.4. A celestial object’s stellar magnitude describes how bright that object looks in the night sky, with the brightest stars being seen at a ...

The unit has a pushbutton switch to toggle between settings (dim and bright) and a CdS photocell that turns off the device during the day. “I bought a pack of three of these night lights, made by ...

To make matters worse, modern society's electric light and bright screens at night trick our body clock into thinking it is ...

During the total lunar eclipse early Friday morning, the moon will still be visible in the night sky, but its color will change. Here's when and how to see the Blood Moon.