Beihai in Thermal Vision
The ASTER instrument on the Terra Earth observing satellite took this image in infrared wavelengths of Beihai, a seaport on the Gulf of Tonkin, China.
![PIA20421.jpg](https://th-thumbnailer.cdn-si-edu.com/WGFgjzm-Myz_AJqXlqkPFWT7RCs=/1000x750/filters:no_upscale()/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/88/30/8830a208-acd8-4037-8369-4434917ad33f/pia20421.jpg)
The ASTER instrument on the Terra Earth observing satellite took this image in infrared wavelengths of Beihai, a seaport on the Gulf of Tonkin, China.