NASA - National Aeronautics and Space Administration

On May 20, 2013, NASA and NOAA satellites observed the system that generated severe weather in the south central United States and spawned the Moore, Okla., tornado. Before, during and after the tornado, satellites provided imagery and data to forecasters. NOAA's GOES-13 satellite provided forecasters with images of the storm system every 15 minutes.

  Powerful Midwest Storm System

Curiosity has used the drill on its robotic arm to collect a powdered sample from the interior of a rock called "Cumberland." Plans call for delivering portions of the sample in coming days to laboratory instruments inside the rover. This is only the second time that a sample has been collected from inside a rock on Mars.

 › Curiosity Mission Page

On May 31, 2013, asteroid 1998 QE2 will sail serenely past Earth, getting no closer than about 3.6 million miles (5.8 million kilometers), or about 15 times the distance between Earth and the moon. And while QE2 is not of much interest to those astronomers and scientists on the lookout for hazardous asteroids, it is of interest to those who dabble in radar astronomy and have a 230-foot (70-meter) -- or larger -- radar telescope at their disposal.

The Expedition 36 trio aboard the International Space Station started its work week taking apart a treadmill and working on science hardware. Another trio is in Kazakhstan counting down to a May 28 launch aboard a Soyuz rocket to join their orbiting crewmates.

Soyuz Commander Fyodor Yurchikhin and Flight Engineers Karen Nyberg and Luca Parmitano will enter their Soyuz TMA-09M spacecraft for a 4:31 p.m. EDT launch, and dock just four orbits – or about six hours – later.

NASA and President Obama are honoring the life and legacy of Sally Ride on the day a national tribute was held for the first American woman in space. The president announced Monday afternoon Ride will be posthumously awarded the Presidential Medal of Freedom during a ceremony at the White House later this year. Monday night, NASA further paid tribute to Ride by creating a new agency internship program in her name and renaming a science instrument aboard the International Space Station.