The goal of the current Landsat mission is to acquire annual data sets of optical band digital imagery of the landmass of the Earth. Ground spatial resolutions for the panchromatic, reflective and emissive bands are 1 5, 30 and 60 meters, respectively. The design life for the Enhanced Thematic Mapper Plus (ETM+) imager on the Landsat-7 satellite is five years. The satellite was launched on April 15, 1999. The mission builds on the 27-year continuous archive ofthematic images ofthe Earth from previous Landsat satellites. Early results from the ETM+ instrument, the spacecraft, and the ground processing indicate that the image quality is as good as expected and all systems are working. Partial Aperture Solar Calibrator (PASC) 100-day radiometric background stability is Full Aperture Solar Calibrator (FASC) 2-day stability isMid-scale per pixel noise isOperational collection of Landsat's Long Term Acquisition Plan (LTAP) started June 29th. NASA Goddard Space Flight Center (GSFC) is responsible for the instrument, spacecraft, launch, flight operations and science team investigations. On October 1 , 2000 USGS EROS Data Center (EDC) takes over flight operations while continuing archiving, monitoring quality, and distributing the imagery without restrictions on reprocessing and redistribution.

The James Webb Space Telescope (JWST) 1,2 project at the NASA, Goddard Space Flight Center (GSFC) is responsible for the development, launch, flight, and science operations for the telescope. The project is in Phase B with its launch scheduled for no earlier than June 2013. The project is a partnership among NASA, the European Space Agency (ESA), and the Canadian Space Agency (CSA). The JWST mission team is fully in place, including major ESA and CSA subcontractors. This paper provides an overview of the planned JWST science, current architecture focusing on the instrumentation, and mission status, including technology developments and risks.

The James Webb Space Telescope (JWST) 1,2 project at the NASA, Goddard Space Flight Center (GSFC) is responsible for the development, launch, flight, and science operations for the telescope. The project is in Phase B with its launch scheduled for no earlier than June 2013. The project is a partnership among NASA, the European Space Agency (ESA), and the Canadian Space Agency (CSA). The JWST mission team is fully in place, including major ESA and CSA subcontractors. This paper provides an overview of the planned JWST science, current architecture focusing on the instrumentation, and mission status, including technology developments and risks.

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