Top 17 Earth Images

Aboard the International Space Station, astronauts and cosmonauts routinely capture Earth's mesmerizing vistas through their windows, amassing a collection of thousands of images over a single year. The Earth Science and Remote Sensing Unit at NASA's Johnson Space Center in Houston were tasked with the delightful responsibility of curating the standout images from this year's compilation. Below is a selection of the 17 most remarkable Earth photos from 2017, handpicked by the unit's experts.