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Mounted atop a specialized transporter, space shuttle Discovery is all set for a short drive Wednesday morning to the Vehicle Assembly Building where it will be joined to a waiting set of two solid rocket boosters and a fuel tank. The move, known as "rollover" to the NASA Kennedy Space Center community of space workers, is slated to begin at 6:30 a.m. when Discovery is carefully backed out of Orbiter Processing Facility-3. The 76-wheeled transport will then truck the spacecraft across a wide, concrete road and into the VAB, where a skilled team of technicians will bolt a huge sling to the orbiter so it can be safely lifted and joined to the boosters and tank.

While their spacecraft undergoes preparations in Florida, the astronauts who will fly Discovery to the International Space Station will be practicing for their arrival in space. Training at NASA’s Johnson Space Center in Houston, the crew will conduct a suited post-insertion simulation today.

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This image from the GOES-13 satellite, taken at 10:32 a.m. EDT on Sept. 3, shows a huge Hurricane Earl northeast of North Carolina with cloud cover stretching over the northeastern U.S. A disorganized Tropical Storm Fiona is located in the bottom right of this image. Image Credit: NASA/NOAA Goes Project

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At NASA’s Kennedy Space Center in Florida, technicians are preparing the external fuel tank and twin solid rocket boosters for space shuttle Discovery’s arrival and connection next week. The tank and boosters are already stacked on the mobile launcher platform. Rollover of Discovery is set to begin at 6:30 am. EDT on Sept. 8. There is no work planned over the Labor Day holiday weekend.

At NASA’s Johnson Space Center, the STS-133 crew is conducting a rendezvous simulation today.‪

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The sands of time are running out for the central star of this the Hourglass Nebula. With its nuclear fuel exhausted, this brief, spectacular, closing phase of a sun-like star’s life occurs as its outer layers are ejected and its core becomes a cooling, fading white dwarf. In 1995, astronomers used the Hubble Space Telescope to make a series of images of planetary nebulae, including the one above. Here, delicate rings of colorful glowing gas (nitrogen-red, hydrogen-green, and oxygen-blue) outline the tenuous walls of the ‘hourglass.’ The unprecedented sharpness of Hubble’s images revealed surprising details of the nebula ejection process and may resolve the outstanding mystery of the variety of complex shapes and symmetries of planetary nebulae. Image Credit: NASA, WFPC2, HST, R. Sahai and J. Trauger (JPL)

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To see what life might be like on a distant planet, reporters need only travel to the Arizona desert.

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Students and teachers at the Pinellas County Science Center in St. Petersburg, Fla., will have an out-of-this-world phone conversation with NASA astronauts aboard the International Space Station.

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A NASA team sent to Chile to aid trapped miners will hold a news conference about their work at the San Jose gold and copper mine near Copiapo at noon CDT, Tuesday, Sept. 7.

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Space shuttle Discovery has been connected to its 76-wheel, custom-built transporter ahead of its move from Orbiter Processing Facility-3 to the Vehicle Assembly Building. That move is scheduled to take place Sept. 8. The transporter is one of several specialized vehicles that serve the shuttle fleet at NASA’s Kennedy Space Center in Florida. Some move payloads and solid rocket booster segments, this one moves the 100-ton orbiters. The kings are, of course, the huge, tracked crawler-transporters that carry a stacked shuttle to the launch pad. One thing they all have in common: they move really slowly, especially when carrying precious national assets on their backs.

In the VAB, the 52-story-tall landmark building at Kennedy, the external fuel tank and solid rocket boosters have been assembled on the mobile launch platform and are waiting for Discovery’s arrival to complete the stack.

The astronauts who will fly Discovery to the International Space Station on the upcoming STS-133 mission are also at Kennedy today for a Crew Equipment Interface Test, known as the CEIT. They will check out the Permanent Multipurpose Module and the Express Logistics Carrier that will carry critical spare parts to the International Space Station.

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NASA and its international partners have assigned three new International Space Station crew members.

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The Expedition 24 crew on the International Space Station photographed this image of polar mesospheric clouds illuminated by an orbital sunrise. Polar mesospheric, or noctilucent (“night shining”), clouds usually are seen at twilight, following the setting of the sun below the horizon and darkening of Earth’s surface. Occasionally the station’s orbital track becomes nearly parallel to Earth’s day/night terminator for a time, allowing the clouds to be visible to the crew at times other than the usual twilight because of the station’s altitude. This photograph shows polar mesospheric clouds illuminated by the rising, rather than setting, sun at center right. Low clouds on the horizon appear yellow and orange, while higher clouds and aerosols are illuminated a brilliant white. Polar mesospheric clouds appear as light blue ribbons extending across the top of the image. The station was located over the Greek island of Kos in the Aegean Sea (near the southwestern coastline of Turkey) when the image was taken at approximately midnight local time. The orbital complex was tracking northeastward, nearly parallel to the terminator, making it possible to observe an apparent “sunrise” located almost due north. A similar unusual alignment of the ISS orbit track, terminator position and seasonal position of Earth’s orbit around the sun allowed for this striking imagery of over the Southern Hemisphere. Image Credit: NASA