
NASA @NASA
The @USGS/@NASA_Landsat program holds the title for the longest continuous space-based record of Earth’s land in existence. That’s nearly 50 years of steadfast observation! Explore how it all began and why the program was born. Watch: https://t.co/0wLMe9mDVQ https://t.co/agw9Za1acZ — PolitiTweet.org