GJ 1132b: Nearest Earth-Sized Exoplanet Discovered So Far May Be a 'Venus Twin'

Artist’s conception of GJ 1132b, an Earth-sized exoplanet orbiting a nearby star. Conditions on this world, however, are probably more like Venus than Earth. Image Credit: Dana Berry

Astronomers have discovered another Earth-sized exoplanet that is the closest one to our own Solar System found so far, but it might not be a […]

Curiosity Marks 3rd Anniversary on Mars With Amazing Science Discoveries

Self-portrait of the Curiosity over in Gale crater on Mars. Part of Mount Sharp is in the background. Image Credit: NASA/JPL-Caltech/MSSS

NASA’s Curiosity rover has just reached its third anniversary milestone on Mars, after landing in Gale crater on Aug. 5, 2012, and since then has made some incredible science discoveries, with more […]

Dark Material in Fractures on Europa's Surface Is Sea Salt, New Research Suggests

The darker-colored material within the fractures and elsewhere on Europa’s surface might be sea salt brought up from the ocean below. Image Credit: NASA/JPL/Ted Stryk

For over a decade, scientists have been curious about the long fractures on Europa’s icy surface and the darker-colored material they contain, as well as other relatively young […]

NASA Space Telescope Sees Possible X-Ray 'Screams' From Zombie Stars

Illustration showing the central region of our galaxy as seen by NuSTAR (magenta circle). The smaller circle shows where the image was taken. Image Credit: NASA/JPL-Caltech

It sounds like something from a bad sci-fi movie, but a NASA space telescope has detected what might be the X-ray “screams” from dead (zombie) stars. The […]

'Old Earths': The Search for Ancient and Habitable (But Dying) Exoplanets

Illustration depicting the life cycle of Sun-like stars. Billions of years from now, our own Sun will expand into a red giant star, scorching any life that exists. Image Credit: ESO/M. Kornmesser

Researchers at Cornell University are taking a new approach to the search for alien life: looking for habitable planets older than […]

Scientists Debate How to Search for Life on Europa in New Mission

Jupiter’s ice-covered moon Europa hides a water ocean beneath its surface. A return mission is now planned to help search for evidence of life there. Photo Credit: NASA/JPL

Jupiter’s moon Europa, with its subsurface ocean, is considered by many to be the best place in the Solar System to search for extraterrestrial life. […]

NASA's Van Allen Probes Going Strong After Two Years of Studying Earth's Radiation Belts

NASA’s Van Allen Probes orbit through two giant radiation belts surrounding Earth. In the time since launching two years ago, the probes have discovered a third radiation belt, and other observations have helped explain how particles in the belts can be sped up to nearly the speed of light.Image Caption and Credit: NASA

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Curiosity Rover Confirms Methane Nearly Non-Existent on Mars

NASA’s Mars rover Curiosity has reported back findings that might impact the discovery of life on Mars. Image Credit: NASA / JPL

For years the planetary science community has speculated, with much optimism, that methane exists in the environment of Mars. Data from observations of the Red Planet made from Earth and from […]

NASA's 2020 Mars Rover Begins to Take Shape

NASA image of proposed 2020 Mars rover.

NASA detailed its plans for the next robotic mission to Mars on Tuesday, July 9 during a conference held in Washington, D.C. This mission will use a robot similar to the successful Mars Science Laboratory rover Curiosity which touched down on the surface of Mars almost […]

Curiosity's Long Roll to Mount Sharp Begins

In this panorama shot, one can see the Mars Science Laboratory rover Curiosity’s view of its destination—Mount Sharp on Mars. Photo Credit: NASA / JPL / Caltech / MSSS

Curiosity is approaching the biggest turning point to date in its planned two-year mission of exploration on the Red Planet. This is according to […]