Climbing Athabasca Glacier in Jasper National Park, Alberta, Canada as the Aurora Borealis glows
© Paul Zizka/Aurora Photo
Ice climbing at Athabasca. Up on the glacier
Athabasca Glacier is the most-visited glacier in North America. Located in Canada’s Jasper National Park, it’s one of the six ‘toes’ of the Columbia Icefield, a natural feature of the Canadian Rockies. Athabasca has receded by nearly a mile in the past 125 years, losing about 16 feet of ice each year.
Composite image of the moon
Montage of images of Jupiter and its volcanic moon Io
Stars reflecting in Totensee, a mountain lake at Grimsel Pass, Kanton Bern, Switzerland
Earthrise across Mare Smythii on the moon
The Large Magellanic Cloud, photographed by the Hubble Space Telescope
Pluto's crescent imaged by NASA's New Horizons interplanetary space probe
Moons of Jupiter—Io, Europa, Ganymede, and Callisto
Bubble Nebula (NGC 7635)
