Sep 20, 2017
There are two leading ways to measure the universe's rate of expansion, and for fifteen years, they more or less agreed with one another. Not anymore, and that’s a big deal.
Oct 15, 2014
Oct 15, 2014: Climate change is a global phenomenon, yet Earth scientists are keeping a wary eye on one place in particular--the Arctic. "Polar regions are important for us to study right now," explains Tom Wagner of NASA's Earth Science Division in Washington DC.... Read More
Oct 14, 2014
As climate change continues to hammer Arctic sea ice, pushing back its summertime boundaries to record-high latitudes, NASA is flying an innovative airborne mission to find out how these developments will affect worldwide weather.
Oct 13, 2014
Oct 13, 2014: NASA’s Lunar Reconnaissance Orbiter (LRO) has provided researchers strong evidence the moon’s volcanic activity slowed gradually instead of stopping abruptly a billion years ago. Scores of distinctive rock deposits observed by LRO are estimated to be less than 100 million years... Read More
Sun, Solar System
Oct 10, 2014
Oct 10, 2014: After 10-month voyage across more than 400 million miles of empty space, NASA's MAVEN spacecraft reached Mars on Sept. 21st 2014. Less than 8 hours later, the data started to flow. "Our Imaging Ultraviolet Spectrograph (IUVS) obtained these false-... Read More
Oct 9, 2014
Oct. 9, 2014: NASA’s extensive fleet of science assets, particularly those orbiting and roving Mars, have front row seats to image and study a once-in-a-lifetime comet flyby on Sunday, Oct. 19.
Oct 9, 2014
Oct. 9, 2014: One small “hot spot” in the U.S. Southwest is responsible for producing the largest concentration of the greenhouse gas methane seen over the United States – more than triple the standard ground-based estimate -- according to a new study of satellite... Read More
Oct 8, 2014
NASA's MAVEN spacecraft has reached Mars and it is beaming back "First Light" images of the Red Planet's upper atmosphere. The data could help researchers understand what transformed Mars from a hospitable planet billions of years ago into a desiccated wasteland today.
Oct 7, 2014
Oct 7, 2014: Sea ice surrounding Antarctica reached a new record high extent this year, covering more of the southern oceans than it has since scientists began a long-term satellite record to map sea ice extent in the late 1970s. The upward trend in the Antarctic, however, is only... Read More
Oct 6, 2014
Oct. 6, 2014: The cold waters of Earth’s deep ocean have not warmed measurably since 2005, according to a new NASA study, leaving unsolved the mystery of why global warming appears to have slowed in recent years.
Sep 24, 2014
The weekend launch of ISS-RapidScat onboard SpaceX-4 has kickstarted a new era for the International Space Station as a giant Earth-observing satellite.
Sep 24, 2014
Sept. 24, 2014: The International Space Station has been called a stepping stone to other worlds. NASA hasn't forgotten, however, that the behemoth space station is also on the doorstep of Earth.
Sep 22, 2014
Sept. 22, 2014: NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft successfully entered Mars’ orbit at 10:24 p.m. EDT Sunday, Sept. 21, where it now will prepare to study the Red Planet’s upper atmosphere as never done before. MAVEN is the first... Read More
Sep 22, 2014
Sept. 22, 2014: Arctic sea ice coverage continued its below-average trend this year as the ice declined to its annual minimum on Sept. 17, according to the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado, Boulder. "Arctic sea ice... Read More
Earth, Sun, Solar System
Sep 18, 2014
Sept. 18, 2014: On Wednesday morning, Oct. 8th, not long before sunrise, the bright full Moon over North America will turn a lovely shade of celestial red. It's a lunar eclipse—visible from all parts of the USA. "It promises to be a stunning sight, even from the most light polluted... Read More