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Dramatic circular outburst from sun

Video of a circular solar outburst observed last week by NASA’s Solar Dynamics Observatory.

Best view yet inside Mars

Just as a doctor uses X-rays to peer inside a patient, so scientists use gravity maps to look inside planets. A new map of Mars’ gravity made with three NASA spacecraft is the most detailed to date. Among other things, it shows that Mars must have a molten core.

A synchronized symphony of fireflies

‘Elkmont Symphony’ is a timelapse journey through Smoky Mountains National Park during world’s largest gathering of synchronized fireflies.

Incredible solar eclipse footage from flight

Alaska Airlines was good enough to redirect Flight #870 from Anchorage to Honolulu last Tuesday (March 8, 2016) so that passengers could enjoy a view of a total solar eclipse from 35,000 feet in the air. The result was spectacular.

Newest Mars mission on its way

Signals have been received from the spacecraft, and the craft is in good health and on its way to Mars!

See an aurora in real-time

Most videos of auroras are sped up. Enjoy the mesmerizing dance of an aurora in real time.

Lunar shadow moves across Earth

March 9, 2016. Image credit: NASA

March 9, 2016. Image credit: NASA

This is way cool. Watch the moon’s shadow move across Earth during the March 9 total solar eclipse. A first ever animation from deep space.

Amazing lightning time-lapse from Zimbabwe

Twenty spectacular cloud-to-ground lightning strikes that took place on a single afternoon in Mutare, Zimbabwe.

What causes Death Valley’s sailing stones to move?

The video above shows a famous sliding stone of Death Valley’s Racetrack Playa in motion. See it? It’s the big rock in the foreground.

Although their tracks across Racetrack Playa – a dry lake bed in Death Valley – have been observed and studied since the early 1900s, no one had ever seen the stones in motion … until recently. What’s more, the researchers who captured this video say they now know what causes the stones to move.

Biggest ever US methane leak from California blowout

The natural gas well blowout in Aliso Canyon, California, first reported on October 23, 2015, vented over 100,000 tons of the powerful greenhouse gas methane into the atmosphere before the well was finally sealed almost four months later, on February 11, 2016. That’s the largest methane leak in U.S. history, according to the first study of the accident.