In an interesting twist to the story of NASA’s ace planet-hunting telescope Kepler, mission managers have announced their intention to bring the mission back online despite suffering a crippling blow in May.

The proposed extended mission, called simply “K2,” could see the orbiting space telescope scan huge swathes of sky, focusing on smaller stars that possess planets with very compact …

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Saturn and Titan

Five moons pose for the international Cassini spacecraft to create this beautiful portrait with Saturn’s rings.

This view, from 29 July 2011, looks toward the northern, sunlit side of the rings from just above the ringplane.

At the far right, and obscuring Saturn itself, is the planet’s second largest moon Rhea, which spans 1528 km. Rhea is closest to Cassini …

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Yesterday morning’s hybrid solar eclipse was stunning. But depending on where you are in the world you may not have been able to see it at all, cloud cover may have messed with visibility, or you may have had a partial view. So for anyone who missed it, this is what the eclipse looked like from Kenya.

For most North …

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Scifi movies are sometimes criticized when explosions in the void make noise. As the old saying goes, “in space, no one can hear you scream.” Without air there is no sound.

But if that’s true, what was space physicist Don Gurnett talking about when he stated at a NASA press conference in Sept. 2013 that he had heard “the sounds …

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ESA’s fourth Automated Transfer Vehicle cargo ferry, Albert Einstein, completed its five-month mission to the International Space Station by reentering the atmosphere today and burning up safely over an uninhabited area of the southern Pacific Ocean.

Automated Transfer Vehicles (ATVs) are the most complex space vehicles ever developed in Europe and are the largest and most capable resupply ships …

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Nine months after the incredible air blast of a meteor over Chelyabinsk, Russia, scientists at the Geological Society of America meeting are reporting that the frequency of such air bursts is probably underestimated and these events are more damaging than comparable nuclear blasts.

It was on Feb. 15, 2013, that the infamous asteroid exploded in the air about 40 kilometers …

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Showcasing Mars

The Planet Mars

From the highest volcano to the deepest canyon, from impact craters to ancient river beds and lava flows, this showcase of images from ESA’s Mars Express takes you on an unforgettable journey across the Red Planet.

Mars Express was launched on 2 June 2003 and arrived at Mars six-and-a-half months later. It has since orbited the planet nearly 12,500 times, …

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Earth Day 2015

The next time you step onto an airplane, consider the following: In any given year, the pilot of your aircraft probably absorbs as much radiation as a worker in a nuclear power plant.

And you are about to follow him wherever he goes.

The FAA classifies pilots as “occupational radiation workers.” Flying high above Earth with little atmosphere to protect …

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Planets rich in carbon, including so-called diamond planets, may lack oceans, according to NASA-funded theoretical research.

Our sun is a carbon-poor star, and as result, our planet Earth is made up largely of silicates, not carbon. Stars with much more carbon than the sun, on the other hand, are predicted to make planets chock full of carbon, and perhaps even …

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A long-standing puzzle in the study of exoplanets is the formation of hot Jupiters – gas giant planets that snuggly orbit their host star. To explain their short orbital periods, theory suggests that hot Jupiters form in long orbits and then quiescently migrate through the protoplanetary disk, the flat ring of dust and debris that circles a new star and …

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