Data from NAA’s Landsat 8 is now freely available, enabling researchers and the general public to access images captured by the satellite within twelve hours of reception. The data is available to download at no charge from GloVis, EarthExplorer, or via the LandsatLook Viewer.
Landsat 8 launched this February and has been capturing images since April. The satellite orbits Earth every 99 minutes and captures images of every point on the planet every 16 days, beaming 400 high resolution images to ground stations every 24 hours. Landsat features nine spectral bands, which include three visible light bands, two near-infrared bands, and two shortwave infrared (SWIR) bands, among others, as well as two thermal sensors, which are used for a wide range of applications, including monitoring environmental change, detecting fires, and watching crops. Google is one of the biggest commercial users of Landsat images, which feed into Google Earth, but other users include scientists and conservationists involved in tracking deforestation and forest degradation.