Numerous sources of high-resolution and lower resolution satellite imagery exist.
DigitalGlobe is a commercial vendor of high-resolution satellite imagery. It operates three high-resolution satellites: WorldView-1 with 50 cm panchromatic resolution; QuickBird with 61 cm pan and 2.4 m multispectral resolutions; and WorldView-2 with 46 cm pan and 1.84 m multispectral resolutions.
GeoEye is a commercial satellite imagery vendor. It operates two high-resolution satellites: IKONOS with 82 cm panchromatic and 4 m multispectral resolutions; and GeoEye-1 with 41 cm pan and 1.65 m multispectral resolutions.
Global Land Cover Facility
The Global Land Cover Facility (GLCF) provides earth science data and products to help everyone to better understand global environmental systems. In particular, the GLCF develops and distributes remotely sensed satellite data and products that explain land cover from the local to global scales. Primary data and products available at the GLCF are free to anyone via FTP. Online datasets may be accessed electronically through the Earth Science Data Interface (ESDI).
ImageSat International N.V. is an international company and a commercial provider of high-resolution, satellite earth-imagery collected by its Earth Remote Observation Satellites (EROS).
MODIS imaging data
MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (EOS AM) and Aqua (EOS PM) satellites. Terra’s orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth’s surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). These data will improve our understanding of global dynamics and processes occurring on the land, in the (more)…
MODIS Rapid Response System
The MODIS Rapid Response System was developed to provide daily satellite images of the Earth’s landmasses in near real time. True-color, photo-like imagery and false-color imagery are available within a few hours of being collected, making the system a valuable resource for organizations like the U.S. Forest Service and the international fire monitoring community, who use the images to track fires; the United States Department of Agriculture Foreign Agricultural Service, who monitors crops and growing conditions; and the United States Environmental Protection Agency and (more)…
NASA Satellite Data and Imagery Resources – Warehouse Inventory Search Tool
WIST, the Warehouse Inventory Search Tool, is a client for searching and ordering earth science data from various NASA and affiliated centers.
Spot Image is a French vendor of satellite imagery collected from the SPOT Earth observation satellites. The SPOT 4 and SPOT 5 satellites provides images between 2.5 and 10 meters. Spot Image also distributes imagery from Formosat-2 (Taiwan) Kompsat-2 (Korea) and several radar satellites.
USGS Earth Explorer
Earth Explorer is a searchable database of declassified US government satellite imagery (up to 1980), aerial photography, and LANDSAT imagery.