Feb 24 2016

From The Space Library

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Revision as of 16:54, 7 March 2016

Release M16-015 One-Year Crew Returns from Space Station March 1; Live Coverage on NASA TV

NASA Television will provide complete coverage Tuesday, March 1, as three crew members depart the International Space Station, including NASA astronaut Scott Kelly and cosmonaut Mikhail Kornienko of the Russian space agency Roscosmos – the station’s first one-year crew.

NASA Television coverage will begin at 3:10 p.m. EST on Monday, Feb. 29, when Kelly hands over command of the station to fellow NASA astronaut Tim Kopra. Complete coverage is as follows:

Monday, Feb. 29

• 3:10 p.m. -- Change of command ceremony (Scott Kelly hands over space station command to Tim Kopra)

Tuesday, March 1

• 4:15 p.m. -- Farewell and hatch closure coverage; hatch closure scheduled at 4:40 p.m.
• 7:45 p.m. -- Undocking coverage; undocking scheduled at 8:05 p.m.
• 10:15 p.m. -- Deorbit burn and landing coverage; deorbit burn scheduled at 10:34 p.m., with landing at 11:27 p.m. (10:27 a.m. on March 2, Kazakhstan time)

Wednesday, March 2

• 1:30 a.m. -- Video file of hatch closure, undocking and landing activities

Twice the duration of a typical mission, Kelly and Kornienko’s station-record 340 days in space afforded researchers a rare opportunity to study the medical, physiological, and psychological and performance challenges astronauts face during long-duration spaceflight.

The science driving the one-year mission, critical to informing the agency’s Journey to Mars, began a year before Kelly or Kornienko floated into the space station. Biological samples were collected and assessments were performed in order to establish baselines. Comparison samples were taken throughout their stay in space and will continue for a year or more after their return to Earth. Kelly’s identical twin brother, former NASA astronaut Mark Kelly, participated in parallel twin studies on Earth to provide scientists more bases for comparisons.

ISS Expedition 47 officially begins, under Kopra’s command, when the Soyuz carrying Kelly, Kornienko and Sergey Volkov undocks from the space station. Kopra, Yuri Malenchenko of Roscosmos and Tim Peake of ESA (European Space Agency), will operate the station as a three-person crew until the arrival of three new crew members in two weeks. NASA astronaut Jeff Williams and Roscosmos cosmonauts Alexey Ovchinin and Oleg Skripochka are scheduled to launch from Baikonur, Kazakhstan, on March 18 EST.

Release 16-017 NASA Partners on Air Quality Study in East Asia

NASA and the Republic of Korea are developing plans for a cooperative field study of air quality in May and June to advance the ability to monitor air pollution accurately from space.

The Korea U.S.-Air Quality study (KORUS-AQ) will assess air quality across urban, rural and coastal areas of South Korea using the combined observations of aircraft, ground sites, ships and satellites. Findings will play a critical role in the development of observing systems of ground and space-based sensors and computer models to provide improved air quality assessments for decision makers.

“KORUS-AQ is a step forward in an international effort to develop a global air quality observing system,” said James Crawford, a lead U.S. scientist on the project from NASA’s Langley Research Center in Hampton, Virginia. “Both of our countries will be launching geostationary satellites that will join other satellites in a system that includes surface networks, air quality models, and targeted airborne sampling.”

Air quality is a significant environmental concern in the United States and around the world. Scientists are trying to untangle the different contributors to air quality, including local emissions from human activities, pollution from far away, and natural sources such as seasonal fires and wind-blown dust.

South Korea’s capital, Seoul, is one of the globe’s five most-populated metropolitan areas. Because of the country’s varied topography and its location close to both rapidly industrializing mainland China and the ocean, the impacts associated with the many factors controlling air quality are larger and often easier to measure over the Korean peninsula than elsewhere.

“Working with our South Korean colleagues on KORUS-AQ, we will improve our understanding of the detailed factors controlling air quality, how the processes interact, and how they are changing over time,” Crawford said.

In accordance with an agreement NASA recently completed with South Korea’s National Institute of Environmental Research, Korean scientists will collect KORUS-AQ observations on the ground and in the air with a King Air aircraft from Hanseo University in Seosan. To take data during the experiment, NASA will contribute a DC-8 flying laboratory from the agency’s Armstrong Flight Research Center in Edwards, California, and a Beechcraft UC-12B King Air from Langley.

Five South Korean instruments will be part of the DC-8 payload and one NASA instrument will be onboard the Hanseo aircraft. NASA’s DC-8 will conduct eight-hour flights to make direct measurements of the atmosphere from altitudes up to 25,000 feet. The NASA King Air will fly overhead with remote-sensing instruments that simulate satellite observations. The Hanseo King Air will make direct atmospheric measurements focusing on areas less accessible to the larger DC-8. Scientists and air quality modelers from both countries will work together to plan the aircraft flights and analyze the measurements.

South Korea maintains an extensive ground-based, continuous air-quality monitoring network of more than 300 sites. Almost half of the sites are in the Seoul area and just over 80 percent are in urban areas. South Korea will host NASA instruments at some of the monitoring sites that are being enhanced for KORUS-AQ.

KORUS-AQ will benefit the development of a new a constellation of spaceborne science satellites and instruments expected to launch in the years 2018-2022 that will make air quality measurements over Asia, North America, Europe, and North Africa. South Korea’s Geostationary Environment Monitoring Spectrometer instrument will monitor long-term climate change and improve early warnings for major pollution events for the Korean peninsula and Asia-Pacific region.

NASA’s Tropospheric Emissions: Monitoring of Pollution mission, an instrument that will fly as a hosted payload on a commercial communications satellite in geostationary orbit, will collect air pollution measurements over North America from Mexico City to Canada. ESA’s (European Space Agency’s) Sentinel-4 mission will take air quality measurements and monitor stratospheric ozone, solar radiation and climate variables over Europe and Northern Africa.

NASA uses the vantage point of space to increase our understanding of our home planet, improve lives, and safeguard our future. NASA develops new ways to observe and study Earth's interconnected natural systems with long-term data records. The agency freely shares this unique knowledge and works with institutions around the world to gain new insights into how our planet is changing.