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RT : 1989 concept art by Paul DiMare imagines future explorers in a dust storm on Mars.
space  NASA  from twitter
yesterday by vimoh
APOD: 2017 November 23 - Alnitak, Alnilam, Mintaka
Alnitak, Alnilam, and Mintaka, are the bright bluish stars from east to west (lower right to upper left) along the diagonal in this cosmic vista. Otherwise known as the Belt of Orion, these three blue supergiant stars are hotter and much more massive than the Sun. They lie from 800 to 1,500 light-years away, born of Orion's well-studied interstellar clouds. In fact, clouds of gas and dust adrift in this region have some surprisingly familiar shapes, including the dark Horsehead Nebula and Flame Nebula near Alnitak at the lower right. The famous Orion Nebula itself is off the right edge of this colorful starfield. This well-framed, 2-panel telescopic mosaic spans about 4 degrees on the sky. via NASA
yesterday by PowerSchill
APOD: 2017 November 22 Oumuamua: Interstellar Asteroid
Nothing like it has ever been seen before. The unusual space rock 'Oumuamua is so intriguing mainly because it is the first asteroid ever detected from outside our Solar System -- although likely many more are to follow given modern computer-driven sky monitoring. Therefore humanity's telescopes -- of nearly every variety -- have put 'Oumuamua into their observing schedule to help better understand this unusual interstellar visitor. Pictured is an artist's illustration of what 'Oumuamua might look like up close. 'Oumuamua is also intriguing, however, because it has unexpected parallels to Rama, a famous fictional interstellar spaceship created by the late science fiction writer Arthur C. Clarke. Like Rama, 'Oumuamua is unusually elongated, should be made of strong material to avoid breaking apart, is only passing through our Solar System, and passed unusually close to the Sun for something gravitationally unbound. Unlike a visiting spaceship, though, 'Oumuamua's trajectory, speed, color, and even probability of detection are consistent with it forming naturally around a normal star many millions of years ago, being expelled after gravitationally encountering a normal planet, and subsequently orbiting in our Galaxy alone. Even given 'Oumuamua's likely conventional origin, perhaps humanity can hold hope that one day we will have the technology to engineer 'Oumuamua -- or another Solar System interloper -- into an interstellar Rama of our own. via NASA
2 days ago by PowerSchill
Superelastic Tire
But don't most shape memory alloys (nickel titanium based) have a critical temperature where they change memory?
NASA  shape  memory  alloy  chainmail  compliant  flexible  metal  nickel  titanium  tire  wheel  space  technology  automotive  research 
2 days ago by asteroza
Mars Code: building robust software
"Dr. Gerard Holzmann spoke at USENIX Hot Topics in System Dependability mini-conf on 7 Oct 2012 in Hollywood, California. He described how NASA/JPL writes and tests software that survives rigors of interplanetary travel, planetary entry, descent, and landing, and operation in another world."
programming  software_development  nasa  software_engineering  pmz  c  verification 
3 days ago by mechazoidal
APOD: 2017 November 20 - Curiosity Rover Takes Selfie on Mars
Yes, but have you ever taken a selfie on Mars? The Curiosity rover on Mars has. This selfie was compiled from many smaller images -- which is why the mechanical arm holding the camera is not visible. (Although its shadow is!) Taken in mid-2015, the featured image shows not only the adventurous rover, but dark layered rocks, the light colored peak of Mount Sharp, and the rusting red sand that pervades Mars. If you look closely, you can even see that a small rock is stuck into one of Curiosity's aging wheels. Now nearing the end of 2017, Curiosity continues to explore the layers of sedimentary rocks it has discovered on Vera Rubin Ridge in order to better understand, generally, the ancient geologic history of Mars and, specifically, why these types of rocks exist there. via NASA
4 days ago by PowerSchill
Curiosity Rover Takes Selfie on Mars
autotweet  nasa  space  from twitter
4 days ago by kexrex
RT : is teaming up with to make flying taxi service available by 2020!

tech  NASA  Uber  from twitter_favs
5 days ago by TomRaftery
APOD: 2017 November 19 - NGC 7822: Stars and Dust Pillars in Infrared
Young stars themselves are clearing out their nursery in NGC 7822. Within the nebula, bright edges and complex dust sculptures dominate this detailed skyscape taken in infrared light by NASA's Wide Field Infrared Survey Explorer (WISE) satellite. NGC 7822 lies at the edge of a giant molecular cloud toward the northern constellation Cepheus, a glowing star forming region that lies about 3,000 light-years away. The atomic emission of light by the nebula's gas is powered by energetic radiation from the hot stars, whose powerful winds and light also sculpt and erode the denser pillar shapes. Stars could still be forming inside the pillars by gravitational collapse, but as the pillars are eroded away, any forming stars will ultimately be cut off from their reservoir of star stuff. This field spans around 40 light-years at the estimated distance of NGC 7822. via NASA
5 days ago by PowerSchill
NGC 7822: Stars and Dust Pillars in Infrared
space  nasa  autotweet  from twitter
5 days ago by kexrex
Man Figures Out Best Way To Defog Windshield With Science
Mark Rober used his scientific skills to try to figure out the exact methodology for effectively defogging his icy windshield.
science  nasa 
5 days ago by sfriedenberg

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