Topic: Donald Pettit

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  • In Pictures Space photos of the day: Microgravity

    Because of the absence of gravity, fuels burning in space behave very differently than they do on Earth. In this image, a 3-millimeter diameter droplet of heptane fuel burns in microgravity, producing soot. This colorized grayscale image is a composite of the individual video frames of the backlit fuel droplet. The bright yellow structure in the middle is the path of the droplet, which becomes smaller as it burns. Initial soot structures (in green) tend to form near the liquid fuel. These come together into larger and larger particles which ultimately spiral out of the flame zone in long, twisting streamers.

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  • SpaceX Dragon cargo ship splashes down in Pacific Ocean (+video)

    The SpaceX Dragon capsule, a privately owned spacecraft, returned to Earth Thursday from the International Space Station

  • SpaceX: Historic space station rendezvous at over 17,000 mph (+video)

    The gleaming white Dragon was snared after a few hours of extra checks and maneuvers. The two vessels came together while sailing above Australia at 17,500 mph.

  • SpaceX will try private launch again on Tuesday

    The rocket—the first private mission to the International Space Station—scrubbed its planned launch on Saturday.

  • In Pictures Space photos of the day: Microgravity

    Because of the absence of gravity, fuels burning in space behave very differently than they do on Earth. In this image, a 3-millimeter diameter droplet of heptane fuel burns in microgravity, producing soot. This colorized grayscale image is a composite of the individual video frames of the backlit fuel droplet. The bright yellow structure in the middle is the path of the droplet, which becomes smaller as it burns. Initial soot structures (in green) tend to form near the liquid fuel. These come together into larger and larger particles which ultimately spiral out of the flame zone in long, twisting streamers.

  • In Pictures Space photos of the day: Plasma

    In this x-ray photo provided by NASA, the sun is shown early in the morning of Sunday, Aug. 1, 2010. The dark arc near the top right edge of the image is a filament of plasma blasting off the surface - part of the coronal mass ejection. The bright region is an unassociated solar flare.

  • In Pictures Space photos of the day 07/30

    This NASA Hubble Space Telescope image of the Trifid Nebula reveals a stellar nursery being torn apart by a nearby massive star. Embryonic stars are forming within an ill-fated cloud of dust and gas, which is destined to be eaten away by the glare from the massive neighbor.