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The hunt for asteroids

New short video from NASA about the hunt for potentially hazardous asteroids and comets, and ways to defend Earth against them.

Cassini prepares for last look at Titan

Even as the long-lived Cassini spacecraft gears up for its last moments at Saturn, it’s preparing for a final long-distance look at Titan, Saturn’s large moon, on September 11.

How do jellyfish swim?

Jellyfish float on ocean currents, but they also swim in a couple of different ways. This post has 2 videos showing 2 different jellyfish propulsion mechanisms.

Synchronized symphony of fireflies

This video shows a timelapse journey through Smoky Mountains National Park during world’s largest gathering of synchronized fireflies. Beautiful!

Video: Moon hoax not

SG Collins explains why the Apollo moon landings on the moon in the late 1960s and early ’70s couldn’t have been faked.

Fire ants build with no master plan

Researchers identified simple behavioral rules that allow these tiny creatures to collaboratively build elaborate structures – rafts and towers – with no one in charge.

Soar over Pluto and Charon

To celebrate the 2-year anniversary of New Horizon’s flyover of the Pluto system, NASA released these 2 cool videos. Sail over the surface of Pluto and its large moon Charon.

Moon shadow versus sun reflection

This 5-second video shows a reflected image of the sun – a sun glint – as a bright spot crossing Earth from right to left. It also shows a dark spot – the moon’s shadow – moving the opposite way.

Does your dog pronk?

Among wild animals, pronking may be a way of avoiding predators. But when you see an animal pronk, you can’t but think it’s leaping for joy.

No commands to Mars craft in late July

NASA says to blame the sun for its moratorium on sending commands to Mars from July 22 to August 1.

Astronomers track hypervelocity stars

New video shows 6 hypervelocity stars, zipping from Milky Way center to outskirts. An interaction with our galaxy’s central, supermassive black hole might have kicked them into fast motion.

Solar minimum is coming

Low ebb in the 11-year sunspot cycle expected 2019-2020. Want some basic information about the sunspot cycle and its effects? Watch this NASA ScienceCast.

Breathtaking night-shining clouds

Wonderful video showing noctilucent – or night-shining – clouds recorded on July 1 and 4. These clouds shine in the darkness, typically on summer nights.

Make a pinhole projector for eclipse-watching

You don’t need fancy equipment to watch a solar eclipse. This video shows you how to make a pinhole camera with just a few simple supplies.

Do you have what it takes to live on Mars?

If it’s your dream to travel to the Red Planet, check out this video for some things you might want to consider.

Solar eclipse safe viewing tips

If you’re planning to watch the August 21 total solar eclipse (and we hope you are!) take a minute to watch this video on how to watch safely.

Flying with the world’s fastest bird

The peregrine falcon is the fastest bird – and in fact the fastest animal on Earth – when in its hunting dive. Amazing BBC video here.

Kepler finds 10 Earth-like exoplanets

NASA’s Kepler space telescope has identified 219 new exoplanet candidates, 10 of which are near-Earth size and in the habitable zone of their star.

Space gardening

Future space outpost dwellers will need to grow plants for food and to recycle air and water. Here’s what scientists are learning about space farming from plants grown on the ISS.

Video: Watching solstices and equinoxes from space

See how sunlight falls on Earth’s surface during the solstices and equinoxes, and get a better understanding of why Earth’s tilt causes the seasons.