NASA's Fermi makes first Gamma-ray study of a gravitational lens

An international team of astronomers, using NASA's Fermi observatory, has made the first-ever gamma-ray measurements of a gravitational lens, a kind of natural telescope formed when a rare cosmic alignment allows the gravity of a massive object to bend and amplify light from a more distant source.

NASA is on top of the world's tallest mountain

Fourteen mountain peaks on Earth stand taller than 8,000 meters (26,247 feet). The tallest of these “eight-thousanders” is Mount Everest, the standard to which all other mountains are compared. The Nepalese name for the mountain is Sagarmatha: “mother of the universe.”

More BARREL balloons take to the skies

The second year of an unprecedented balloon campaign in Antarctica has just begun. The NASA-funded mission – called the Balloon Array for Radiation belt Relativistic Electron Losses, or BARREL – is led by Dartmouth College in Hanover, N.H. The mission is unique, as it relies not on one gigantic balloon, but on many smaller ones, 20 in total.

NASA images Chang'e 3 landing site

China's Chang'e 3 landed on Mare Imbrium (Sea of Rains) just east of a 450 m diameter impact crater on 14 December 2013. Soon after landing, a small rover named Yutu (or Jade Rabbit in English) was deployed and took its first tentative drive onto the airless regolith.

NASA and JAXA announce launch date for global precipitation satellite

Environmental research and weather forecasting are about to get a significant technology boost as NASA and the Japan Aerospace Exploration Agency (JAXA) prepare to launch a new satellite in February.

NASA Carbon Sleuth gets simulated taste of space

A NASA observatory that will make the most precise, highest-resolution and most complete, space-based measurements of carbon dioxide in Earth's atmosphere to date has marked a key milestone in preparation for its planned July 2014 launch.

NASA releases new earthrise simulation video

The photo known as Earthrise is the first color photograph of Earth taken by a person in lunar orbit. Earthrise is the cover photo of TIME's Great Images of the 20th Century, and is the central photo on the cover of LIFE's 100 Photographs That Changed the World.q

NASA's asteroid hunter spacecraft returns first images after reactivation

NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE), a spacecraft that made the most comprehensive survey to date of asteroids and comets, has returned its first set of test images in preparation for a renewed mission.

The rise and fall of galactic cities

In the fable of the town and country mice, the country mouse visits his city-dwelling cousin to discover a world of opulence. In the early cosmos, billions of years ago, galaxies resided in the equivalent of urban or country environments.

JPL to test new supersonic decelerator technology

A giant crane will tower above NASA's Jet Propulsion Laboratory in Pasadena, Calif., shooting out of a hilly mesa like an oversized erector set, ready to help test components of NASA's Low Density Supersonic Decelerator (LDSD) project.

NASA's SDO shows the Sun's rainbow of wavelengths

Telescopes help distant objects appear bigger, but this is only one of their advantages. Telescopes can also collect light in ranges that our eyes alone cannot see, providing scientists ways of observing a whole host of material and processes that would otherwise be inaccessible.

NASA engineers crush fuel tank to build better rockets

NASA completed a series of high-tech can-crushing tests last week as an enormous fuel tank crumbled under the pressure of almost a million pounds of force, all in the name of building lighter, more affordable rockets.

NASA's Cassini spacecraft reveals clues about Saturn Moon

NASA's Cassini spacecraft is providing scientists with key clues about Saturn's moon Titan, and in particular, its hydrocarbon lakes and seas. Titan is one of the most Earth-like places in the solar system, and the only place other than our planet that has stable liquid on its surface.

Has the ozone hole stabilized?

NASA scientists have revealed the inner workings of the ozone hole that forms annually over Antarctica and found that declining chlorine in the stratosphere has not yet caused a recovery of the ozone hole.

Meet NASA’s Iron Man-like female robot

 NASA's Johnson Space Center has been hard at work preparing for the DARPA Robotics Challeng. The results are pretty cool. NASA sees robots taking over the world once they get self-aware doing NASA's dirty work on Mars. That's the way we read it. Behold Valkyrie, superhero robot. She will be our queen, soon.

NASA's Juno gives starship-like view of Earth flyby

When NASA’s Juno spacecraft flew past Earth on Oct. 9, 2013, it received a boost in speed of more than 8,800 mph (about 7.3 kilometer per second), which set it on course for a July 4, 2016, rendezvous with Jupiter, the largest planet in our solar system.

NASA Mars spacecraft reveals a more dynamic Red Planet

NASA's Mars Reconnaissance Orbiter has revealed to scientists slender dark markings -- possibly due to salty water – that advance seasonally down slopes surprisingly close to the Martian equator.

NASA visualization shows Sun's magnetic flip

NASA's visualization (video) below shows the position of the sun's magnetic fields from January 1997 to December 2013.

Laser instrument on NASA Mars Rover tops 100,000 zaps

NASA's Curiosity Mars rover has passed the milestone of 100,000 shots fired by its laser. It uses the laser as one way to check which chemical elements are in rocks and soils.

Glimpsing the infrastructure of a gamma-ray burst jet

A new study using observations from a novel instrument provides the best look to date at magnetic fields at the heart of gamma-ray bursts, the most energetic explosions in the universe. An international team of astronomers from Britain, Slovenia and Italy has glimpsed the infrastructure of a burst's high-speed jet.