No sunspots have been seen for 15 days, the longest period since the last solar minimum, the quiet period of solar activity that occurs every 11 years. ...

The image above shows a high-resolution enhanced color view of Pluto on July 14, 2015, captured by NASA’s New Horizons spacecraft. A team of researchers is lobbying for a new definition of a planet that would reestablish the icy body's status. (NASA/JHUAPL/SwRI) Just as the idea of Pluto as a dwarf planet began to sink in, researchers have started to lobbyfor a new definition that would reclassify the icy celestial body as a planet, along with more than 100 other...

A space enthusiast combined hundreds of high-resolution images to show what flying over Mars might look like. ...

NASA tested its most advanced space observatory, the James Webb Space Telescope, by simulating the intense vibrations felt during launch. ...

The Maui Space Surveillance Complex operates at an elevation of 10,000 feet -- literally above the clouds. ...

At a Glance What appeared to be water flowing on Mars' surface is actually an optical illusion, according to a recent study.The flows are the result of sand avalanches and shadows cast by sunlight. Seasonally recurring streaks on Mars had researchers considering the presence of water on the Red Planet, but a team of researchers proposed a theory that these flows have nothing to do with water at all. According to a recent study, the scientists believe that that create...

Life aboard the International Space Station is not all science all the time. ...

At a Glance A probe has circled Mars 50,000 times during nearly 11 years in orbit.The Mars Reconnaissance Orbiter has performed a number of different tasks for NASA. About 11 years after it arrived, NASA's Mars Reconnaissance Orbiter(MRO) has now circled the Red Planet 50,000 times as of this week, NASA announced. The spacecraft is showing no signs of slowing down, say mission officials. "After 11 and a half years in flight, the spacecraft ," MRO project manager Dan Johnston,...

In two simulations, NASA Langley researchers drop helicopters with crash test dummies in order to study their effects. ...

A lightning phenomenon known as an ELVE appears in the sky over the Czech Republic during a thunderstorm on April 2, 2017. (Courtesy of Martin Popek ) A rare lightning phenomenon appeared in the skies over the Czech Republic last week during a thunderstorm. During the storm, a red ring of light known as an elve, short foranappeared, according to EarthSky. These are typically seen with lighting sprites that appear red. that are generated during lightning strikes. They’re shaped like...

This month’s full moon is called a pink moon, named by Native Americans for a type of pink flower that blooms around this time of year. ...

For decades, NASA has relied on an aircraft known as ‘Super Guppy’ to transport heavy loads like spacecraft. ...