خانه / Science / Astronomy / NASA Asks Scientific Community to Think on Possible Europa Lander Instruments

NASA Asks Scientific Community to Think on Possible Europa Lander Instruments

NASA is asking scientists to consider what would be the best instruments to include on a potential mission to land on Jupiter’s icy moon, Europa. Image credit: NASA/JPL-Caltech/DLR

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NASA Asks Scientific Community to Think on Possible Europa Lander Instruments

NASA is asking scientists to consider what would be the best instruments to include on a mission to land on Jupiter’s icy moon, Europa.

NASA Wednesday informed the science community to prepare for a planned competition to select science instruments for a potential Europa lander.

While a Europa lander mission is not yet approved by NASA, the agency’s Planetary Science Division has funding in Fiscal Year 2017 to conduct the announcement of opportunity process.

“The possibility of placing a lander on the surface of this intriguing icy moon, touching and exploring a world that might harbor life is at the heart of the Europa lander mission,” said Thomas Zurbuchen, associate administrator of NASA’s Science Mission Directorate in Washington. “We want the community to be prepared for this announcement of opportunity, because NASA recognizes the immense amount of work involved in preparing proposals for this potential future exploration.”

The community announcement provides advance notice of NASA’s plan to hold a competition for instrument investigations for a potential Europa lander mission. Proposed investigations will be evaluated and selected through a two-step competitive process to fund development of a variety of relevant instruments and then to ensure the instruments are compatible with the mission concept.

Approximately 10 proposals may be selected to proceed into a competitive Phase A. The Phase A concept study will be limited to approximately 12 months with a $1.5 million budget per investigation. At the conclusion of these studies, NASA may select some of these concepts to complete Phase A and subsequent mission phases.

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Natural and False Color Views of Europa

This image shows two views of the trailing hemisphere of Jupiter’s ice-covered satellite, Europa. The left image shows the approximate natural color appearance of Europa. The image on the right is a false-color composite version combining violet, green and infrared images to enhance color differences in the predominantly water-ice crust of Europa. Dark brown areas represent rocky material derived from the interior, implanted by impact, or from a combination of interior and exterior sources. Bright plains in the polar areas (top and bottom) are shown in tones of blue to distinguish possibly coarse-grained ice (dark blue) from fine-grained ice (light blue). Long, dark lines are fractures in the crust, some of which are more than 3,000 kilometers (1,850 miles) long. The bright feature containing a central dark spot in the lower third of the image is a young impact crater some 50 kilometers (31 miles) in diameter. This crater has been provisionally named “Pwyll” for the Celtic god of the underworld.

Europa is about 3,160 kilometers (1,950 miles) in diameter, or about the size of Earth’s moon. This image was taken on September 7, 1996, at a range of 677,000 kilometers (417,900 miles) by the solid state imaging television camera onboard the Galileo spacecraft during its second orbit around Jupiter. The image was processed by Deutsche Forschungsanstalt fuer Luftund Raumfahrt e.V., Berlin, Germany.

 

Investigations will be limited to those addressing the following science objectives, which are listed in order of decreasing priority:

* Search for evidence of life on Europa

* Assess the habitability of Europa via in situ techniques uniquely available to a lander mission

* Characterize surface and subsurface properties at the scale of the lander

In early 2016, in response to a congressional directive, NASA’s Planetary Science Division began a study to assess the science and engineering design of a future Europa lander mission. NASA routinely conducts such studies — known as Science Definition Team (SDT) reports — long before the start of any mission to gain an understanding of the challenges, feasibility and science value of the potential mission. The 21-member team began work almost one year ago, submitting a report to NASA on Feb. 7.

The agency briefed the community on the Europa Lander SDT study at recent town halls at the 2017 Lunar and Planetary Science Conference (LPSC) at The Woodlands, Texas, and the Astrobiology Science Conference (AbSciCon) in Mesa, Arizona.

The proposed Europa lander is separate from and would follow its predecessor — the Europa Clipper multiple flyby mission – which now is in preliminary design phase and planned for launch in the early 2020s. Arriving in the Jupiter system after a journey of several years, the spacecraft would orbit the planet about every two weeks, providing opportunities for 40 to 45 flybys in the prime mission. The Clipper spacecraft would image Europa’s icy surface at high resolution, and investigate its composition and structure of its interior and icy shell.

Wednesday’s community announcement in no way obligates NASA to solicit future proposals.

source: NASA – Jet Propulsion Laboratory – California Institute of Technology

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