Friday, April 8, 2016
NASA just released 2.95 million satellite images to the public — here are 21 of the best
An instrument called the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) has been taking pictures of Earth since it launched into space in 1999.
In that time, it has photographed an incredible 99% of the planet's surface.
Although it's aboard NASA's Terra spacecraft, ASTER is a Japanese instrument and most of its data and images weren't free to the public — until now.