General

NASA: http://www.nasa.gov/
EOS Project Science Office: http://eospso.gsfc.nasa.gov/
Federation of Earth Science Information Partners (ESIP): http://esipfed.org/
 

Satellites

Aqua: http://aqua.nasa.gov/
Aura: http://aura.gsfc.nasa.gov
Terra: http://terra.nasa.gov/
 

Instruments

AMSR-E: http://wwwghcc.msfc.nasa.gov/AMSR/
AIRS: http://airs.jpl.nasa.gov/
MLS: http://mls.jpl.nasa.gov/
MODIS: http://modis.gsfc.nasa.gov/
OMI: http://www.knmi.nl/omi/
 

Direct Broadcast

GSFC Direct Readout Laboratory: http://directreadout.sci.gsfc.nasa.gov/
 

Tools

HDF-EOS Tools and Information Center: http://hdfeos.org/
 

Fires

Fire Science Lab: http://firelab.org/
MODIS Fire and Thermal Anomalies: http://modis-fire.umd.edu/
National Interagency Fire Center (NIFC): http://www.nifc.gov/
 

Land

Global Observation For Forest And Land Cover Dynamics (GOFC-GOLD): http://www.fao.org/gtos/gofc-gold/
Land Cover Land Use Change Program (LCLUC): http://lcluc.umd.edu/
MODIS Land Data Discipline Team: http://landweb.nascom.nasa.gov/
MODIS Land: http://modis-land.gsfc.nasa.gov/
University of Maryland Global Land Cover Facility (GLCF): http://glcf.umiacs.umd.edu/
USFS Remote Sensing Application Center (RSAC): http://www.fs.fed.us/eng/rsac/