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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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EXport Processes in the Ocean from Remote Sensing (EXPORTS) is a large-scale NASA-led and NSF co-funded field campaign that will provide critical information for quantifying the export and fate of upper ocean net primary production (NPP) using satellite information and state of the art technology.
This export is a technical white paper that recommends what is necessary to create a version (V7) DTN specification for the Consultative Committee for Space Data Systems (CCSDS) blue book and is based on IETF RFC BPBis.v26 (Note the original CCSDS standard as IRTF 5050). The considerations in this document follow the current CCSDS specification 734.2-B-1 (https://public.ccsds.org/Pubs/734x2b1.pdf) and is consistent with its intent and level of service. In it, are identified areas requiring updates and specification items that are essential to meet current minimums of capability.
TRAPPIST-1 is one of the most promising targets for follow-up observations due to the depths of the planetary transit signals. The transits of the seven rocky planets in this system are relatively deep because the system is located about 12~pc away, and the star is star is relatively small (0.121 R), even for an M-type star. Among the star's seven planets, three orbit within the Habitable Zone where surface temperatures would allow surface water to exist. Amongst these three habitable zone planets, TRAPPIST-1e has been identified, by previous 3-D climate simulations, as the most habitable planet, for which surface liquid water can be present for an extended set of atmospheric configurations. TRAPPIST1e is therefore considered the favorite target for atmospheric characterization by transmission spectroscopy with JWST. This has all caused a considerable amount of interest in TRAPPIST-1E, and simulations thereof, in order to derive constraints on its possible atmosphere and serve as a guideline for future observations.
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This paper describes the capabilities of the Hardware Command Decode (HCD) application specific integrated circuit (ASIC) developed for the Cassini spacecraft.
Over the next decade, international pans and commitments are underway to develop an infrastructure at Mars to support future exploration of the red planet. The purpose of this infrastructure is to provide reliable global communication and navigation coverage for on-approach, landing, roving, and in-flight assets at Mars.
In order to accomplish dependable onboard evolution, we develop a methodology which is called guarded software upgrading (GSU).
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