Posts by 

David Callejas

The island of Tristan da Cunha

This photo, taken by an astronaut aboard the International Space Station, shows the volcanic island Tirstan da Cunha in the southern Atlantic Ocean.

Arctic sea ice near its maximum for 2013

Arctic sea ice near its maximum for this year, in Canada’s Gulf of St. Lawrence.

Video: The science of love

Cool video that breaks down the science behind the feeling of love. Simply put ... love drives the motor of the mind.

Video: Golden ring, and dragon tail, from our sun

The sun released two especially interesting and beautiful features on January 31, 2013. See pics and video of the ring-shaped prominence and Dragon Tail filament here.

Video of dolphin seeking help from divers

This video of an injured dolphin who approaches a group of scuba divers seeking help really is spectacular.

Space images of the week

A compilation of the best space photos and images from earthsky.org for the week of January 14-18.

Video: Breathtaking time-lapse of California’s Yosemite Park

An amazing time-lapse video project that covers Yosemite National Park's 1,200 square miles (about 3,000 square kilometers) of beautiful scenery.

Rare white killer whale caught on camera

A team of scientists have spotted an extremely rare white killer whale off the coast of Russia. Check out the amazing images and video!

Mexico’s Popocatepetl volcano keeps millions of people on alert

The Popocatepetl volcano, located about 43 miles (70 km) southeast of Mexico City, has been spouting ash and vapor into the sky this week.

Fans enjoy EarthSky broadcasts on Science360 Radio

Hear EarthSky on NSF's Science360 Radio, available on the Internet and via iPhone and Android devices.

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