Placing ultrastable lasers inside some of the coldest, darkest lunar craters could help scientists establish a GPS-like ...

Here's when to see a pair of massive letters shining on the lunar surface around May's first quarter moon phase.

They rank among the darkest and coldest places in the solar system: Hundreds of lunar craters, many of them at the moon's ...

Permanently shadowed craters have long interested scientists. Could a new laser system help future spacecraft navigate the ...

Tonight marks the First Quarter Moon, when roughly half of the Moon’s visible face is illuminated. As of Saturday, May 23, ...

Scientists propose ultrastable lunar lasers inside permanently shadowed craters to enable GPS-like navigation and precision ...

Jupiter will shine brightly about 20 degrees to the lower right of the moon, while Venus and Mercury form a diagonal line ...

Zoey Hu, Dahyeon Lee and Ben Lewis, who are holding replicas of an optical laser cavity. (Courtesy: R Jacobson/NIST) There ...

When humans return to the Moon, they will be faced with many challenges. The long-term residents of our natural satellite ...

Nuclear power plants are safer than many suspect. But putting reactors in space is a concept with a checkered history. One ...

Despite being the closest planet to the sun, Mercury has thick deposits of ice at its poles, and now we may understand the ...