Multiple witnesses in Guatemala recently captured video of a UFO. The sighting was so mysterious that not even the Director ...

Bay Area astronomers say a severe geomagnetic storm could cause the northern lights to appear over the Bay Area again.

NBC Bay Area's Rob Mayeda shares viewing tips and some of the science behind what makes the aurora borealis aka northern ...

peak brightness is critical to ensure good readability under strong ambient light. As discussed in the section of ‘CR and ACR’, high brightness leads to a high ACR, except that the power ...