Earth
Image: Strong Storms Over Oklahoma 
© NASA
Oklahoma on Monday Afternoon
This image of the storm system that generated the F-4 tornado in Moore, Oklahoma was taken by NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard one of the Earth Observing System (EOS) satellites.
Continue reading Image: Strong Storms Over Oklahoma.
ISS
An Interview with Don Pettit
Kerry Ellis: Astronaut Don Pettit began his career with NASA seventeen years ago and has since flown on three spaceflight missions. Logging more than 370 days in space and over 13 spacewalk hours, he lived aboard the International Space Station for five and a half months during Expedition 6, was a member of the STS-126 crew, and again lived aboard station for six and a half months as part of the Expedition 30/31 crew.
Planetology
Storms on Uranus & Neptune Confined to Upper Atmosphere
Similar to the giant gas planets Jupiter and Saturn, their smaller cousins, Uranus and Neptune, have long been known to harbor swirling clouds and violent winds churning up their atmospheres. Massive bands of jet streams encircling the entire planet have been observed in both cases.
Solar Physics
The Future of the Sun
A team of astronomers led by Jose Dias do Nascimento (Department of Theoretical and Experimental Physics, Universidade Federal do Rio Grande do Norte [DFTE, UFRN], Brazil) has found the farthest known solar twin in the Milky Way Galaxy -- CoRoT Sol 1, which has about the same mass and chemical composition as the Sun.
Astronauts
Life of Sally Ride Honored at Kennedy Center Tribute 
PBS News Hour Science Correspondent Miles O'Brien talks with Jeffrey Brown about the legacy of astronaut Sally Ride.
Education
The Impact of Sally Ride's Contributions in Space and Education
NASA Television aired, live a special event from the Smithsonian National Air and Space Museum in Washington to honor the contributions and legacy of the late Dr. Sally Ride, America's first woman in space.
Astronauts
NASA and The White House Pay Tribute to Sally Ride
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.
Astronauts
First British Astronaut in Space for Over 20 Years
Former Apache helicopter pilot Tim Peake is to become the first British astronaut to visit the International Space Station, making him the first UK astronaut in space for over 20 years.
NASA
This Week @NASA - Kepler Troubles
This week, the Kepler science team announced the spacecraft was in a Thruster-Controlled Safe Mode. The root cause was undetermined but the proximate cause appears to be an attitude error caused by a malfunction in Kepler's reaction wheel 4, one of the telescope's pointing mechanisms.
NASA Hack Space
Project Morpheus: Hard Lessons and Lean Engineering
Kerry Ellis: Future human space exploration will mean getting beyond low-Earth orbit--and returning safely. Several projects across NASA are working on the challenges that goal presents, among them propulsion alternatives and guidance, navigation, and control. Three years ago, Project Morpheus and the Autonomous Landing and Hazard Avoidance Technology project, or ALHAT, began collaborating on advances in these areas.
More top stories from May.
Recent Press Releases
Recent Status Reports
Calendar
- 21 May: Hearing Next Steps in Human Exploration to Mars and Beyond
- 21 May: Small Business Event Quarterly Meeting of the Stennis Business Consortium
- 21 May: NASA Advisory Council Aeronautics Committee; Unmanned Aircraft Systems Subcommittee Meeting
- 21 May: Space Technology Expo
- 22 May: Media Invited to See Rotating Chair Used to Prevent Air, Space Sickness
- 22 May: NASA Associate Administrator Robert Lightfoot to Visit Marshall Space Flight Center, Meet with Media
- 22 May: International Space Station Program, Science Briefing
- 22 May: Massachusetts Students Speak Live With Orbiting NASA Astronaut
- 22 May: NASA Space Station SOcial
- 22 May: NASA Advisory Council Audit Finance and Analysis Committee Meeting
- * Submit Your Event | More Events *
Latest Video
Featured Stories
Mars
Opportunity Examines Clay Clues in Rock
NASA's senior Mars rover, Opportunity, is driving to a new study area after a dramatic finish to 20 months on "Cape York" with examination of a rock intensely altered by water.
Hubble Space Telescope
NASA's Hubble Views a Cosmic Skyrocket
Resembling a Fourth of July skyrocket, Herbig-Haro 110 is a geyser of hot gas from a newborn star that splashes up against and ricochets off the dense core of a cloud of molecular hydrogen.
Astrobiology
The Detectability of Habitable Exomoons with Kepler
In this paper, the detectability of habitable exomoons orbiting around giant planets in M-dwarf systems using Transit Timing Variations (TTVs) and Transit Timing Durations (TDVs) with Kepler-class photometry is investigated. Light curves of systems with various configurations were simulated around M-dwarf hosts of mass 0.5 Msun and radius 0.55 Rsun.
Exploration
Solar System Exploration Research Virtual Institute
The National Aeronautics and Space Administration (NASA) is soliciting the submission of multiinstitutional team-based proposals for research as participating members of the Solar System Exploration Research Virtual Institute (SSERVI), hereafter referred to as "the Institute."
Asteroids
OSIRIS-REx Asteroid Sample Return Mission Moves Ahead
NASA's first mission to sample an asteroid is moving ahead into development and testing in preparation for its launch in 2016.
Mercury
Radar Exposes Mercury's Interior
Researchers working with high-precision planetary radars, including the Goldstone Solar System Radar of NASA's Jet Propulsion Laboratory, Pasadena, Calif., have discovered strong evidence that the planet Mercury has a molten core
Earth
Image: Strong Storms Over Oklahoma
This image of the storm system that generated the F-4 tornado in Moore, Oklahoma was taken by NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard one of the Earth Observing System (EOS) satellites.
Jupiter
Herschel Links Jupiter's Water to Comet Impact
ESA's Herschel space observatory has solved a long-standing mystery as to the origin of water in the upper atmosphere of Jupiter, finding conclusive evidence that it was delivered by the dramatic impact of comet Shoemaker-Levy 9 in July 1994.
European Space Agency
Galaxy Zoom - A Space-Time Magnifying Glass
Bright arcs are smeared around the heart of galaxy cluster Abell S1077 in this image taken by the NASA/ESA Hubble space telescope. The arcs are stretched images of distant galaxies distorted by the cluster's enormous gravitational field.
Astronomy
The Legacy of NASA's Balloon Missions
Don Cohen: In an article on the NuSTAR launch delay in the fall 2012 issue of ASK, I wrote, "NuSTAR, the Nuclear Spectroscopic Telescope Array, contains the first focusing telescopes designed to look at high-energy X-ray radiation." Soon after that issue was sent out, complaints began to arrive: What about the balloon missions with focusing X-ray telescopes that preceded it?
International Space Station
Expedition 35 Astronauts Land in Kazakhstan
Three members of the International Space Station Expedition 35 crew undocked from the orbiting laboratory and returned safely to Earth Monday, May 13, wrapping up a mission lasting almost five months. The departure marks the beginning of Expedition 36.
