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14 January 2020
Final images from Cassini spacecraft
For the last leg of its journey, Cassini was put on a particularly daring orbit passing between Saturn and its rings which brought it closer to Saturn than ever before. This allowed scientists to obtain images of Saturn’s ultraviolet auroras in unprecedented resolution. The new observations are detailed in two new studies published in the AGU journals.
5 September 2019
Making sense of Saturn’s impossible rotation
Saturn may be doing a little electromagnetic shimmy and twist which has been throwing off attempts by scientists to determine how long it takes for the planet to rotate on its axis, according to a new study.
27 August 2019
Cluster and XMM-Newton pave the way for SMILE
The Solar wind-Magnetosphere-Ionosphere Link Explorer (SMILE) mission is still four years away from launch, but scientists are already using existing ESA satellites, such as the XMM-Newton X-ray observatory and the Cluster mission studying Earth’s magnetosphere, to pave the way for this pioneering venture.
20 February 2019
Earth’s atmosphere stretches out to the Moon – and beyond
A recent discovery based on observations by the ESA/NASA Solar and Heliospheric Observatory, SOHO, shows that the gaseous layer that wraps around Earth reaches up to 630,000 km away, or 50 times the diameter of our planet.
20 February 2018
Found: “Footprint” of Jupiter’s moon Callisto
The elusive “footprint” of Jupiter’s moon Callisto has been spotted for the first time near the south pole of the giant planet, according to a new study.
19 January 2016
Researchers discover surprising waves in the Antarctic atmosphere
Researchers who have spent thousands of hours observing the atmosphere high above Antarctica have discovered a previously unknown class of wave that ripples constantly through the atmosphere, likely affecting high-level winds, climate, and even Earth-based communications systems.
13 August 2015
Scientists track air pollution by meal times
Cars and trucks shouldn’t take all of the blame for air pollution in Hong Kong. Smoke from cooking adds more of a specific type of pollution – organic aerosols – to the city’s air than traffic emissions, a new study finds.
29 July 2015
Dusty comet releases mysterious clumps
Images of an unusually dusty comet have revealed strange streaming clumps that could hold the secrets to how comets create their beautiful, sweeping, striated tails.
Comet C/2011 L4 barged into the research of solar physicist Nour E. Raouafi when he was studying the sun using images from the SECCHI/HI-1 telescope aboard the solar-observing spacecraft STEREO-B.
9 April 2015
New study finds small solar eruptions can have profound effects on unprotected planets
On Dec. 19, 2006, the sun ejected a small, slow-moving puff of solar material. Four days later, this sluggish Coronal Mass Ejection was nevertheless powerful enough to rip away dramatic amounts of oxygen out of Venus’ atmosphere and send it out into space, where it was lost forever. Learning just why a small CME had such a strong impact may have profound consequences for understanding what makes a planet hospitable for life.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.