#ClarkVision: This is a 2013 image of Comet PanSTARRS (C/2011 L4). Later this month (Apr. 26-27), another PanSTARRS comet (C/2025 R3) will be visible with binoculars & possibly with the naked eye under dark skies.
PSI's Roger Clark captured this image in the Colorado Rocky Mountains.
#ClarkVision: In honor of the lunar eclipse earlier this week, we're sharing a photo of the event snapped by PSI Senior Scientist Roger Clark. Learn more: buff.ly/iZYSw7P
#ClarkVision: The Maroon Bells, two peaks in Colorado's Elk Mountains, are always stunning, but even moreso with the Milky Way draping behind it. This natural light image was captured by PSI Senior Scientist Roger Clark over ten years ago.
#ClarkVision: Comet Lemmon photographed by PSI's Roger Clark. This natural color image was obtained October 21, 2025 in the Colorado Rocky Mountains at 11,170 feet elevation, above much atmospheric absorption and light pollution from the Denver metro area.
#ClarkVision: PSI's Roger Clark captures this setting full moon early one morning in the Serengeti of Tanzania. Don't forget to catch the full moon tonight!
#ClarkVision: On an early evening in May, the Milky Way and the constellation of Orion set in Canyonlands National Park, Utah, making a stunning rainbow nightscape.
#ClarkVision: ✨ The galaxy rises over Bryce Canyon National Park one spring morning in 2020
📸: Roger Clark
#ClarkVision: The night sky over the central Serengeti in Tanzania early one February morning. The light in this scene is all natural light from the night sky.
📸: Roger Clark
#ClarkVision: The Perseid meteor shower 2025 peaks August 12-13. To celebrate, we're sharing an image shot by PSI's Roger Clark from August 2015. It was taken in southern Colorado. In the early morning, the airglow to the north (left side of the image) appeared green in the sky.
📸: Roger Clark
Introducing #ClarkVision: PSI Senior Scientist Roger Clark is also a professional photographer, snapping awe-inspiring images of the natural work since 1976. We'll be sharing some of his images once a month across our social channels!
📸: Roger Clark
