May 17, 2017
Red Planet Roundup: June 2017
With two rovers patrolling the surface of Mars, six spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from afar, …
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April 21, 2016
Red Planet Roundup: May 2016
With two rovers patrolling the surface of Mars, five spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from …
March 27, 2016
Lunar atmosphere more active than we thought
LADEE — pronounced “laddie” and short for Lunar Atmosphere and Dust Environment Explorer — was among the shortest-lived of NASA’s successful …
December 23, 2015
Red Planet Roundup: January 2016
With two rovers patrolling the surface of Mars, five spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from …
August 25, 2015
Red Planet Roundup: September 2015
With two rovers patrolling the surface of Mars, five spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from …
June 16, 2015
Red Planet Roundup: July 2015
With two rovers patrolling the surface of Mars, five spacecraft in orbit above it, and scientists here on Earth studying the Red Planet from …
May 12, 2015
Mapping solar winds
Two types of solar winds emanate from the sun: fast winds that travel at more than 700 kilometers per second, and slow winds that move at a mere …
April 20, 2015
Red Planet Roundup: May 2015
With two rovers patrolling the surface of Mars, five spacecraft in orbit above it, and scientists back here on Earth studying the Red Planet from …
February 2, 2015
Red Planet Roundup: March 2015
With two rovers patrolling the surface of Mars, five spacecraft in orbit above it, and scientists back here on Earth studying the Red Planet from …
December 9, 2014
Red Planet Roundup: January 2015
As two rovers patrol the surface of Mars, five spacecraft orbit above and scientists back here on Earth study the Red Planet from afar, new …
November 4, 2014
Nanoflares power the sun's superheated corona
The sun’s outer atmosphere, or corona, reaches temperatures of more than 1 million degrees Celsius, hundreds of times hotter than its visible …
October 6, 2014
Red Planet Roundup: November 2014
As Curiosity and Opportunity rove around Mars, the Mars Reconnaissance Orbiter (MRO), Mars Express and Mars Odyssey orbit above, and scientists …
October 2, 2014
Solar storms cause spike in electrical insurance claims
On March 13, 1989, a geomagnetic storm spawned by a solar outburst struck Earth, triggering instabilities in the electric power grid that serves …
August 19, 2014
Red Planet Roundup: September 2014
As Curiosity and Opportunity rove around Mars, the Mars Reconnaissance Orbiter (MRO), Mars Express and Mars Odyssey orbit above, and scientists …
July 28, 2014
Mars Monthly
Thousands of kilometers across and bulging to elevations of almost 10 kilometers, the Tharsis region on Mars hosts several massive volcanoes and …
July 10, 2014
Solar wind gives lightning a boost
Solar wind consists of charged particles like electrons and protons emitted continuously by the sun. Especially high-speed solar winds — zipping …
June 23, 2014
Mars Monthly
Scientists have speculated that billions of years ago Mars had a much thicker atmosphere, which warmed the surface enough to maintain large …
May 14, 2014
Comment: Preparing for the death of Earth
About 5 billion years from now, Earth will meet its end in a fiery blaze as it is swallowed by the expanding sun. What happens between now and …
March 18, 2014
Bare Earth Elements: Mars rocks wear manganese coats
Several rocks on the surface of Mars are coated with distinctive dark-colored surface layers enriched in manganese that, while sharing …
January 5, 2012
Spot-free sun: Is that normal?
For the past few years, astronomers and scientists have been looking up at a sun that is, more often than not, rather blank. Almost too blank. …