Thick clouds prompted SpaceX to call off Thursday’s planned launch of four astronauts to the International Space Station for NASA.

Science is driven by our desire to understand things. In some cases, where it requires significant effort and investment to develop systems that can understand new things, science benefits from

Since the discovery of planetary nebulae in the late 1700s, astronomers have learned that these expanding shells of glowing gas expelled by low-intermediate mass stars late in their lives can

Ice crystals in Earth’s atmosphere sometimes align just right to create various striking visual effects, from a halo around the moon, to bright spots called sundogs on either side of

I’m not exaggerating when I say that our studies of the moon have unlocked the mysteries of the universe.