Total solar eclipse taken in Todos Santos, Mexico on July 11, 1991. This is a composite of 9 different exposures to reveal subtle details that cannot be captured in a single exposure.
A meteor streaks across the sky over the red slave huts in Bonaire at 3:12 am on Thursday, August 13, 2015. The meteor was one of the many in the annual Perseid meteor shower. The huts are hundreds of years old and are remnants of the days when slave labor was used on the island.
The moon is silhouetted against the sun in this annular solar eclipse near McCloud, CA on Sunday, May 20, 2012. Unlike a total solar eclipse, the sun is not completely obscured due to the moon's greater distance from the earth.
A multiple exposure of the annular solar eclipse over Mt Shasta near McCloud on Sunday, May 20, 2012.
Lightning cracks through the sky over El Dorado in the early morning of Monday, July 23, 2012.
This image (derived from video, and in false color) is of the Sun seen in Hydrogen-alpha light on Friday June 17, 2016. The detail is the electromagnetic turbulence at the sun's surface. These details cannot be seen by just cutting down the sun's intense light by 100,000 times. Special filters limit the image to only the light from the hydrogen atoms.
Visitors line up to look through a telescope at Squaw Valley Resort on Friday July 13, 2007.
A silhouette of the planet Venus against the sun during the Transit of Venus viewing event at the El Dorado Observatory in Placerville, CA on Tuesday, June 5, 2012.
A flock of ducks flies past an ultralight pilot near White Rock Road in El Dorado Hills on Friday, March 14, 2014.
The night sky lightens as a total lunar eclipse sets in the western sky at 6:26 am, just before the sun rose in Placerville on Saturday, April 4, 2015.
A waxing crescent moon in close proximity in the sky to the planet Venus (bright star in the center of the frame) and Mars (the red speck between two) seen through the branches of a tree in Auburn on Friday, February 20, 2015.
Due the Earth's rotation during a four hour exposure, the stars appear to spin around Polaris (the north star) in Lincoln, CA.
The "Supermoon" rises over the Sacramento skyline on Tuesday, September 9, 2014. When the moon's orbit brings it closest to Earth, or perigee, when it is full it is called a "Supermoon."
SETI researchers monitor the heavens with a field of radio telescopes at the Allen Telescope Array at the Hat Creek Radio Observatory in Hat Creek northern California on Thursday, September 1, 2016.
Alu Vali covers his eyes during a total solar eclipse in Hula, Papua New Guinea on November 22, 1984. The Papuan government distributed leaflets warning remote villagers of the risks of looking directly at the sun. Although it would have been safe look during the total phase, Vali was unwilling to look. The total eclipse lasted only 51 seconds here.
The surface of the moon on Tuesday, May 17, 2016.
This timelapse video of the total lunar eclipse of October 8, 2014 was shot from my home in El Dorado, CA using a Nikon D4 camera and 840mm lens The camera was mounted on an equitorial mount to follow its movement across the sky. Shooting one frame every 40 seconds, the eclipse you see here actually spanned 3 hours 50 minutes.
This short video shows the International Space Station (ISS) passing in front of the Sun as it orbits the Earth on Tuesday, June 21, 2016.