Still, it's white and disturbing enough to use Zinc Oxide nanoparticles more and more often. Pinnell, it's slightly less white than TiO2. It leaves a disturbing whitish tint on the skin, although, according to a 2000 research paper by Dr. It's also often used to treat skin irritations such as diaper rash.Īs for the disadvantages, Zinc Oxide is also not cosmetically elegant. So much so that Zinc Oxide also counts as a skin protectant and anti-irritant. It's also highly stable and non-irritating. It protects against UVB, UVA II, and UVA I almost uniformly, and is considered to be the broadest range sunscreen available today. The first main difference is that while TiO2 gives a nice broad spectrum protection, Zinc Oxide has an even nicer and even broader spectrum protection. Visit for complete coverage of Endeavour's final mission STS-134 or follow us and on Facebook. You can follow senior writer Clara Moskowitz on Twitter ClaraMoskowitz. The operation is called the Rendezvous Pitch Maneuver.Īnalysis of the photos should be complete in the coming days. When Endeavour was about 600 feet (180 meters) below the space station, commander Kelly steered the shuttle through a backflip that exposed the orbiter's heat shield to the station, allowing astronauts there to snap hundreds of detailed images. "We're not tracking any issues as far as that's concerned."Īnother check of the heat shield will be available soon, when Mission Control has a chance to analyze high-resolution photos taken of the shuttle's underbelly as it approached the station. "Preliminary assessment is it looks really good so far," LeRoy Cain, head of Endeavour's mission management team, said in a news briefing Tuesday. So far, the sensitive tiles appear to be in good shape to protect the shuttle from the fiery heat of re-entry to Earth. The astronauts spent yesterday, their first full day in space, conducting a detailed inspection of their orbiter's heat shield tiles to check for any damage that might have been suffered during launch. "And I want to say that's a perfect way to start an exciting rendezvous day!" "I love that song and I love being in space," Johnson said, thanking his teenage son Matt for the choice, and apologizing for missing his birthday, which is tomorrow. The tune was selected for Johnson by his family and radioed up to the shuttle by Mission Control. (0256 GMT Wednesday) to the song "Drops of Jupiter" by the band Train. The crew woke Tuesday evening at 10:56 p.m. The shuttle's crew plans four busy spacewalks and a host of intensive robotic arm maneuvers to stow the parts and perform maintenance to the exterior of the station.Įndeavour's astronauts are working the overnight shift during their mission. At $2 billion, it's the most expensive science experiment ever flown to the station, and offers the potential to solve numerous cosmic mysteries such as what forms the invisible dark matter thought to pervade the universe.Įndeavour is also packed full of spare supplies, including extra ammonia coolant, antenna systems and parts for the station's Dextre robot, that will help outfit the space station after the shuttles retire. The main goal of Endeavour's final mission is to deliver an astrophysics experiment called the Alpha Magnetic Spectrometer to the International Space Station. "Yoo Hoo house-guests!" Garan wrote via Twitter on Tuesday. The station residents were apparently excited to have visitors. Currently living aboard the station with Nespoli as part of the Expedition 27 mission are commander Dmitri Kondratyev of Russia, and flight engineers Ron Garan and Catherine (Cady) Coleman of NASA and Russian cosmonauts Alexander Samokutyaev and Andrey Borisenko. Their addition to the space station will double the outpost's population. Kelly's crewmates aboard Endeavour include pilot Greg Johnson, and mission specialists Michael Fincke, Andrew Feustel, Greg Chamitoff, and Italian astronaut Roberto Vittori. The shuttle will stay at the space station until May 29, when it will undock to begin the trek back to Earth for good. Kelly last saw the International Space Station in 2008 on his STS-124 shuttle mission.Īs the shuttle astronauts floated through the hatch to where the station crew was waiting, the spaceflyers welcomed each other with hugs and handshakes.Įndeavour made its last liftoff Monday morning, beginning a 16-day mission to orbit. "Hey, you guys wore coordinating shirts, we didn't do that," said shuttle commander Mark Kelly as he climbed aboard the space station.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |