Taxonomy term

nasa

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 satellites. Launched on Sept. 7, 2013, it crashed onto the moon’s surface, as intended, on April 17, 2014, after six months orbiting the moon. Data collected by LADEE have already greatly expanded our understanding of the atmosphere of the moon and other bodies in the solar system; the spacecraft also made a number of unexpected discoveries, some of which were presented at the fall meeting of the American Geophysical Union (AGU) in San Francisco last December.

28 Mar 2016

Benchmarks: February 1962 and 1984: John Glenn and Bruce McCandless make space flight history

On the morning of Feb. 20, 1962, John H. Glenn sat inside the Mercury Friendship 7 space capsule, perched atop a rocket that had initially been designed to deliver nuclear warheads to the far ends of the world. That rocket would propel Glenn into space, and into the history books, as the first American to orbit Earth. 
 
07 Feb 2016

Map shows where lightning zaps most

Lightning strikes far more often over land than sea and is more concentrated closer to the equator — both testaments to the greater atmospheric instability over those parts of the planet.

29 Aug 2015

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 surface. The reason for this has puzzled scientists, who so far have only been able to theorize explanations.

24 Dec 2014

New satellite maps carbon dioxide sources and sinks in high definition

A recently launched satellite is now measuring atmospheric carbon dioxide with greater precision than ever before. Launched on July 2, the Orbiting Carbon Observatory-2 (OCO-2) is already mapping levels of carbon dioxide, the presence of which in the air constantly varies by region and over time. It has also validated a new technique of analysis that was not even contemplated when the mission was planned, according to scientists who discussed the mission at a press conference during the annual meeting of the American Geophysical Union (AGU) in San Francisco.

23 Dec 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 on Earth study the Red Planet from afar, new findings are announced almost weekly. Here are a few of the latest updates.

06 Nov 2014

Warm river water melted Arctic sea ice

In September 2012, the area of the Arctic Ocean covered by sea ice was the smallest on record since satellite monitoring began in 1979. Several factors are thought to have contributed to that summer’s diminished ice, including a large cyclone in August that brought warmer ocean waters into the area and broke up the ice and a longer-term trend of thinning and weakening sea ice. Now, researchers have found that at least one large burst of warm freshwater into the Arctic earlier in the summer probably played a role as well.
 

23 Aug 2014

Rosetta: Off to decipher a comet's secrets

“Hello World.”

With that brief message, scientists at the European Space Agency (ESA) and followers around the world sent up a collective cheer. Rosetta — the ESA spacecraft currently on a 10-year mission to orbit and land on a comet — awoke in January after a three-year hibernation, and was ready to work.

23 Jun 2014

Benchmarks: June 16, 1963 & June 18, 1983: Valentina Tereshkova and Sally Ride become first and third women in space

On June 16, 1963, during the height of the Cold War, Valentina Tereshkova became the first woman to fly in space. It would be 19 years before another woman would fly in space — Soviet Svetlana Savitskaya in 1982 — and 20 years before the first American woman, Sally Ride, made it into space on June 18, 1983. These pioneers inspired the generations of women astronauts who followed. In the three decades since Ride’s foray into outer space, 57 other women have also taken flight (see sidebar) and, last year, half of NASA’s new class of astronauts were women.

16 Jun 2014

MAVEN takes off for Mars to study the planet's atmosphere

NASA’s latest Mars mission, the Mars Atmosphere and Volatile Evolution (MAVEN) orbiter, successfully blasted off toward the Red Planet today to study how its evolving atmosphere contributed to climate change on Earth's neighbor.

18 Nov 2013

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