Mars Rover Curiosity begins trek toward Mount Sharp

With drives on July 4 and July 7, NASA's Mars rover Curiosity has departed its last science target in the "Glenelg" area and commenced a many-month overland journey to the base of the mission's main destination, Mount Sharp.

NASA's Mars rover Opportunity passes half-way point to next destination

NASA's Mars Exploration Rover Opportunity has driven more than half of the distance needed to get from a site where it spent 22 months to its next destination.

Gas-giant exoplanets cling close to their parent stars

Finding extrasolar planets has become so commonplace that it seems astronomers merely have to look up and another world is discovered.

NASA's Voyager 1 explores final frontier of "solar bubble"

Data from Voyager 1, now more than 11 billion miles (18 billion kilometers) from the sun, suggest the spacecraft is closer to becoming the first human-made object to reach interstellar space.

Sounding rocket to study electric currents in atmosphere

Swirling through Earth’s upper atmosphere is a layer of charged particles called the ionosphere. Constantly on the move, currents through the ionosphere can be much more complicated than winds at lower altitudes, because the currents vary in concert with magnetic fields around Earth and solar activity.

Water and ice on the moon - a metamorphosis

Using data gathered by NASA's Lunar Reconnaissance Orbiter (LRO) mission, scientists believe they have solved a mystery from one of the solar system's coldest regions—a permanently shadowed crater on the moon.

A billion-pixel view from Mars

A billion-pixel view from the surface of Mars, from NASA's Mars rover Curiosity, offers armchair explorers a way to examine one part of the Red Planet in great detail.

Got any ideas about ducking asteroids? NASA wants to hear them

NASA has announced a "Grand Challenge" focused on finding all asteroid threats to human populations and knowing what to do about them.

Marks on Martian dunes may be tracks of dry-ice sleds

NASA research indicates hunks of frozen carbon dioxide - dry ice - may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go.

Video: These noctilucent clouds get an early start

Every summer, something strange and wonderful happens high above the north pole. Ice crystals begin to cling to the smoky remains of meteors, forming electric-blue clouds with tendrils that ripple hypnotically against the sunset sky.

NASA's Curiosity Mars Rover approaches turning point

NASA's Mars Science Laboratory mission is approaching its biggest turning point since landing its rover, Curiosity, inside Mars' Gale Crater last summer.

Weightlessness of space helps design improved materials for Earth

Researchers from Northeastern University are among the many scientists helping NASA use the weightlessness of space to design stronger materials here on Earth.

NASA's Swift reveals new phenomenon in a neutron star

Astronomers using NASA's Swift X-ray Telescope have observed a spinning neutron star suddenly slowing down, yielding clues they can use to understand these extremely dense objects.

Mighty Eagle prototype lander gets tested

The Mighty Eagle, NASA's robotic prototype lander managed out of the space agency's Marshall Space Flight Center, recently completed a test series to monitor its systems functionality after coming out of winter storage.

ISS crew expands to 6 after Soyuz flight

NASA astronaut Karen Nyberg, Russian Federal Space Agency cosmonaut Fyodor Yurchikhin and European Space Agency (ESA) astronaut Luca Parmitano joined their Expedition 36 crewmates when the hatches between their Soyuz TMA-09M spacecraft and the International Space Station opened at 12:14 a.m. EDT Wednesday.

Video: These galaxies are fed by funnels of fuel

Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws.

Exploring a hidden population of exotic neutron stars

Magnetars – the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation - are some of the most extreme objects known in the Universe.

NASA builds unusual testbed for analyzing x-ray navigation tech

Pulsars have a number of unusual qualities. Like zombies, they shine even though they’re technically dead, and they rotate rapidly, emitting powerful and regular beams of radiation that are seen as flashes of light, blinking on and off at intervals from seconds to milliseconds. A NASA team has built a first-of-a-kind testbed that simulates these distinctive pulsations.

NASA's Barrel Mission launches 20 balloons

A team of scientists recently launched 20 balloons during a campaign in Antarctica to study a space weather phenomenon, during which electrons stream down toward the poles from two gigantic donuts of radiation, the Van Allen Belts, which surround Earth.

NASA examines the beginnings of the Universe

When did the first stars and galaxies form in the universe? How brightly did they burn their nuclear fuel? Scientists will seek to gain answers to these questions with the launch of the Cosmic Infrared Background ExpeRIment (CIBER) on a Black Brant XII suborbital sounding rocket between 11 and 11:59 p.m. EDT, June 4 from the Wallops Flight Facility in Virginia.