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The Mystery of Coronal Heating Poster 1
Sun
Nov 30, 2016
Observations by NASA's IRIS spacecraft suggest that "heat bombs" are going off in the sun's outer atmosphere, helping to explain why the solar corona is so mysteriously hot.
Earth
Oct 30, 2014
Oct 30, 2014: The Antarctic ozone hole reached its annual peak size on Sept. 11, according to scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). The size of this year’s hole was 24.1 million square kilometers (9.3 million square miles) — an area roughly the size... Read More
Universe, Solar System
Oct 23, 2014
Oct 23, 2014: NASA’s Hubble Space Telescope has produced a unique composite image of comet Siding Spring as it made its never-before-seen close passage of a comet by Mars. Siding Spring, officially designated Comet C/2013 A1, made its closest approach to Mars at 2:28 p.m. EDT on Oct. 19, at a... Read More
Solar System
Oct 17, 2014
On October 23rd, the Moon will pass in front of the sun, off-center, producing a partial solar eclipse visible in most of the United States.
ScienceCasts: Sunset Solar Eclipse
Universe, Sun
Oct 17, 2014
Oct. 17, 2014:  Waking up before sunrise is a good way to get a head start on the day. On Oct. 21st, waking up before sunrise could stop you in your tracks. Blame Halley’s Comet.  Every year in mid-to-late October, Earth passes through a stream of dusty debris from Comet Halley,... Read More
Sun, Solar System
Oct 17, 2014
Oct 17, 2014: Sunsets are always pretty.  One sunset this month could be out of this world. On Thursday, Oct. 23rd, the setting sun across eastern parts of the USA will be red, beautiful and … crescent-shaped. "It's a partial solar eclipse," explains longtime NASA eclipse expert Fred Espenak.  In... Read More
Universe, Solar System
Oct 16, 2014
Oct 16, 2014:   Peering out to the dim, outer reaches of our solar system, NASA’s Hubble Space Telescope has uncovered three Kuiper Belt objects (KBOs) the agency’s New Horizons spacecraft could potentially visit after it flies by Pluto in July 2015.The KBOs were detected through a dedicated Hubble... Read More
Earth
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.  "They are changing... Read More
Earth
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.
ScienceCasts: The Cloudy Future of Arctic Sea Ice
Solar System
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 old.... 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-color images of... Read More
Earth
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 data by scientists at NASA... Read More
Earth
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. Comet C/2013 A1, also known as comet Siding Spring, will pass within about 87,000 miles... Read More
Solar System
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.
ScienceCasts: First Light for MAVEN
Earth
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 about a... Read More