Iceberg Alley is a region in the western Weddell Sea, Antarctica, where a large concentration of icebergs moves in a north-northeast direction following the clockwise circulation around the Weddell Sea gyre. Large old icebergs contain centuries of windblown sediment and minerals, visible as layers when they roll over. Scientists have analyzed the relationship between iron and nutrient...
A starburst anemone war News.science360.gov.org
A starburst anemone war is just beginning in this photo. Starburst anemone fight with their neighbors, using the tentacles with the rounded white ends called acrorhagi. As they fight the white areas of the acrorhagi become tattered. The white is a concentration of stinging cells and when touched by an enemy, it will slough off and continue stinging the enemy again and again. Eventuall...
Photographer: Nebojsa Novakovic
Summary Authors: Nebojsa Novakovic; Jim Foster
Shown above is another look at the spectacular St. Patrick's Day, 2015, aurora. This colorful photo was captured from Pinawa Dam, Manitoba, Canada. A powerful coronal mass ejection on the Sun triggered a severe geomagnetic storm on March 15/16, 2015, allowing auroras to be observed in the middle latitudes of both th...
Fault Scarp at Lone Pine, California Epod.usra.edu
Photographer: Cindy Todd Summary Author: Cindy Todd On March 26, 1872, the small eastern Sierra Nevada town of Lone Pine, California experienced a 7.4 to 7.9-magnitude earthquake. It was reported to have shaken people out of bed all the way to Sacramento -- some 222 mi (357 km) away. There were 27 confirmed deaths. A fault scarp formed from the vertical and right lateral movement of this tem...
Summer Triangles over Japan Epod.usra.edu
Have you ever seen the Summer Triangle?
Gravitational Anomalies of Mercury Epod.usra.edu
What's that under the surface of Mercury?
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The universe is incredibly big. But how do astronomers know that? Billion-mile-long tape measures can't be found at the hardware store. Instead, astronomers use the expansion of the universe itself to establish milepost markers. The light from remote objects is attenuated and weakened as space stretches like a rubber band. The consequences are that starlight will...
Hubble Space Telescope Celebrates 25 Years of Unveiling the Universe Epod.usra.edu
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NASA and ESA are celebrating the Hubble Space Telescope's silver anniversary of 25 years in space by unveiling some of nature's own fireworks a giant cluster of about 3,000 stars called Westerlund 2. The cluster resides inside a vibrant stellar breeding ground known as Gum 29, located 20,000 light-years away in the constellation Carina. The comparatively young...
NASA Earth Observatory Image of the Day
Plume in Moreton Bay, Australia Epod.usra.edu
When the rainstorm ended in southeast Australia, a brown plume emerged from the Brisbane River.
Landslide in Langtang Valley Epod.usra.edu
The powerful earthquake in Nepal triggered a destructive landslide that completely buried a village.
Pacific White-sided Dolphin - Acrobat of the Pacific Thewebsiteofeverything.com
Today's photo features Lepanthes dewildei, taken by Sebastian Moreno (aka J. Sebastian Moreno @Flickr) at the Reserva Natural Comunitaria Cerro El Inglés, Colombia. This photo is one of a set of the first photos ever taken of this intriguing and beautiful species. Thank you Sebastian!
Lepanthes dewildei is one of about 800 species in the Lepanthes, most of which we know very little about. An ...
Pinus thunbergii BotanicalGarden.ubc.ca
The stately Pinus thunbergii is deserving of attention any day, but last week the male cones were resplendently releasing pollen, and I thought it made for a good opportunity to discuss reproduction in the Pinaceae . It took me a while to get a good photo of the pollen grains blowing away, as I had to use one hand to brush the male cone while holding the camera steady with my other hand. I did...