People in Earth’s northern hemisphere witnessed an annular eclipse on Thursday, with parts of Canada and Siberia having the best view of the celestial event.
The eclipse was partially visible to observers in North America, parts of Europe including France and the UK, and part of northern Asia.
In London, where the moon covered 20 percent of the sun as the eclipse reached totality, skygazers glimpsed the event through cloud cover.
Observers on the east coast of the United States were treated to a rare eclipsed sunrise.
In northern Canada, northern Russia, northwestern Greenland and the Arctic, the sun was 88 percent eclipsed by the moon.
Many live stream views from various locations broadcast on YouTube were also subject to cloud cover.
However, those with maximum visibility — and the necessary protective eyewear — would have seen the moon’s silhouette through the sun for a few minutes of the two-hour event.
Prior to the eclipse, experts warned people not to try to look directly at the sun, even through the clouds.
“Retinal burns can be irreversible,” Florent Delfie of the Paris Observatory recalled before the event.
Some observers used pieces of cardboard punched with a hole to view the eclipse as a shadow projected onto paper and post images to social media.
The eclipse was the first annular — meaning “ring-like” —eclipse of 2021 and the 16th century.
Annular eclipses occur when the diameter of the moon visible from Earth is smaller than that of the sun, leaving a “ring of fire” visible around the silhouette.
A total solar eclipse occurs when the moon completely blocks the sun’s disk, temporarily plunging part of the Earth into complete darkness.
The next total solar eclipse will occur on December 4, but will only be visible from Antarctica.