This date in science: Happy birthday, Harrison Schmitt

Born July 3, 1935, Harrison "Jack" Schmitt is the only trained scientist to have walked on the moon, so far.

Moon in the country of midnight sun

This looks like any ordinary photo of a twilight sky, doesn't it? Yes, until you realize what time the photo was taken. It was July 1, 2013 at 1:16 a.m.

Cluster spacecraft detects elusive space wind

A new study provides the first conclusive proof of the existence of a space wind first proposed theoretically over 20 years ago.

View from space: Arizona Yarnell Hill fire

NASA’s Aqua satellite captured this image of the Yarnell Hill fire in Arizona on July 1, 2013. The fire was still burning on July 2, and 19 firefighters had been killed.

Pluto’s smallest moons receive their official names

The names of Pluto’s two smallest known moons, previously referred to as “P4” and “P5,” have been formally approved by the International Astronomical Union (IAU).

Russian rocket explodes on liftoff from Kazakhstan desert

There were no immediate reports of casualties when a Russian Proton-M heavy lift rocket exploded on liftoff earlier today.

When Saturn eclipses the sun

In 2006, the Cassini spacecraft saw Saturn eclipse the sun. These eclipses are rare, but another is due to happen on July 19, 2013.

Cloud modeling expands estimate of life-supporting planets

Current data suggest there is approximately one Earth-size planet in the habitable zone of each red dwarf star. This study roughly doubles that estimate.

Most sustainable office building in the world

In Munich, a newly erected office building - called the NuOffice - has been awarded an internationally recognized green design certification in platinum.

View from space: Four largest Texas cities

This striking astronaut photograph taken from the International Space Station (ISS) shows the four largest cities in Texas at night.