Photo: Brian Skerry
A manatee swims in a freshwater spring in Crystal River, Florida. Manatees struggle for survival as the result of a gantlet of threats, from watercraft strikes to toxins in the water. The most serious threat, however, is the loss of warm water due to the habitat loss.
Peruvian surfer Domingo Pianetstsi rides a wave with his alpaca named Pisco at San Bartolo beach in Lima.
Australian Ph.D. student Florian Beutler has created the most accurate measurement yet of how fast the universe is expanding. Working at the International Centre for Radio Astronomy Research (ICRAR), he used the Hubble constant and data from the 6dF Galaxy Survey, the most ambitious survey to date of over 120,000 galaxies across the southern sky, collected between 2001 and 2005. The result is a remarkable map of the expansion of universe, animated here to unfold before your very eyes.
All-Sky Milky Way
This single image is able to show the entire sky, thanks to the truly dark sky of the Namibian savanna and to the absence of mountains. Only some small trees from the Tivoli farm are visible toward West.
“Freedom is never voluntarily given by the oppressor; it must be demanded by the oppressed.”