Author Archives: Tony Aguirre

Retrograde motion is motion in the direction opposite to the movement of something else, This motion can be the orbit of one body about another body or about some other point, or the rotation of a single body about its … Continue reading →

What is NDVI? The Normalized Difference Vegetation Index (NDVI) has been in use for many years to measure and monitor plant growth (vigor), vegetation cover, and biomass production from multispectral satellite data. The NDVI image maps shown here are prepared … Continue reading →