Image taken by ESA Astronaut Alex Gerst @Astro_Alex aboard the ISS. Larger view
A cloud of unhealthy air pollution shrouded the skies of northern India again this week.
A NASA-led, international study finds Asia's high mountain glaciers are flowing more slowly in response to widespread ice loss, affecting freshwater availability downstream in India, Pakistan and China.
On Nov. 26, NASA's InSight mission knew the spacecraft touched down within an 81-mile-long (130-kilometer-long) landing ellipse on Mars.
Fishermen would be puzzled if they netted only big and little fish, but few medium-sized fish.