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Unbelievable photograph of a roll cloud over Uruguay!

How to see a whole circle rainbow: Image by Colin Leonhardt of Birdseye View Photography

TFW your friend comes over and you're out of town. ' learns about 's at

With mockup of Orion capsule. Seemed bigger in the drawings or I had a growth spurt.

One of my favorite places on Earth! Took this photo over you in April 2015. Today, I am in you!

to astronaut Marsha Ivins. Spent >1300 hrs in space during 5 shuttle flights: STS-32, 46, 62, 81, 98

Which came first? The theorist or the experimentalist? Find out:

Are you ready for next week's 'Pink Moon?'

has a lighter, has a laser, but the scifi droid has things in common with 's

Take a walk down memory lane with one of Hubble’s most impressive astronomical observations

Space to Ground: Six Pack of Spaceships
NASA's Space to Ground is your weekly update on what's happening aboard the International Space Station. Got a question or comment? Use #spacetoground to talk to us.

Two US commercial spacecraft now on for 1st time! Get the latest from humanity's orbiting laboratory.

Few shadows in this NAVCAM view from 10 April, when I flew between Sun and :

Rise and shine - happy Friday everyone :)

Heliopause Electrostatic Rapid Transit System: by , Marshall Space Flight Center

Never-before-seen galaxy spotted orbiting the Milky Way | New Scientist

On April 10th, ’s periapsis was raised to 164.5 km, where ’ average atmospheric density is ~0.07 kg/km³.

This dwarf galaxy, 2.5 million light-years from Earth, merely shows us a few million stars:

Today in 1452: Leonardo da Vinci was born. This model was made from one of his designs.

Vulcan rocket to fly composite payload fairing design, replacing Atlas 5’s metallic fairing.

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