tldrdailynews.com logo
Tag

Magnetosphere

All articles tagged with #magnetosphere

Earth's Hidden Magnetic Cavity Shields Moon From Cosmic Rays
science17 days ago

Earth's Hidden Magnetic Cavity Shields Moon From Cosmic Rays

A Science Advances study using Chang’e-4 data and NASA’s LRO observations finds that Earth’s magnetosphere forms an extended “cavity” that provides extra shielding for the Moon, reducing lunar surface radiation by about 20% during certain orbital phases—specifically in a pre-noon geometry—even when the Moon is outside the magnetosphere. The effect, mainly affecting low-energy ions that contribute to skin dose, was observed across 31 lunar cycles and could inform radiation protection for future missions, such as Artemis.

via Gizmodo|
#change-4#cosmic-rays#magnetosphere
Webb Maps Uranus in 3D, Unveiling Its Tilted Magnetosphere
science1 month ago

Webb Maps Uranus in 3D, Unveiling Its Tilted Magnetosphere

NASA’s James Webb Space Telescope captured Uranus’ upper atmosphere for nearly a full rotation, delivering the most detailed 3D view of its ionosphere and how energy moves through the atmosphere, where auroras form under the planet’s unusually tilted magnetic field, and it reinforces ideas about ongoing atmospheric cooling—while highlighting the uncertain outlook for a future Uranus mission.

via Futurism|
#atmosphere#auroras#james-webb-space-telescope
NASA's ESCAPADE Deploys Twin Probes to Decode Mars Space Weather
space1 month ago

NASA's ESCAPADE Deploys Twin Probes to Decode Mars Space Weather

NASA’s ESCAPADE mission launched in 2025 with two orbiters to study how the solar wind and Mars’ magnetosphere interact, revealing real-time atmospheric escape from the Red Planet and providing stereo measurements. The twins will fly in tandem near Mars after looping through a distant Earth magnetotail en route to a Sept. 2027 Mars arrival, also doing discovery science in Earth’s magnetotail. Findings will help protect future astronauts and inform Mars communications and ionospheric understanding as humanity prepares to explore the Red Planet.

via NASA Science (.gov)|
#magnetosphere#mars#nasa-mission
JWST maps Uranus’s auroras and tilted magnetosphere in unprecedented detail
space1 month ago

JWST maps Uranus’s auroras and tilted magnetosphere in unprecedented detail

JWST mapped Uranus's upper atmosphere during a ~15-hour rotation, revealing two bright auroral belts around the planet's magnetic poles and a mid-latitude depletion region, along with a three-dimensional view of ion temperature and density up to about 5,000 km above the cloud tops. The data show Uranus’s highly tilted magnetosphere drives distinctive auroral patterns and that the atmosphere has cooled since the 1990s, offering clues about ice giants and exoplanet atmospheres.

via Live Science|
#atmosphere#auroras#james-webb-space-telescope
space1 month ago

Webb Telescope Maps Uranus’ Ionosphere in 3D

The European Space Agency reports that the James Webb Space Telescope used the Near-Infrared Spectrograph (NIRSpec) to study Uranus’ upper atmosphere, focusing on its ionosphere up to about 5,000 km above the clouds and creating a full-rotation 3D map to probe the planet’s magnetic field and auroras. The measurements show the hottest regions at roughly 3,000–4,000 km altitude with ion densities around 1,000 km, offering new insights into Uranus’ enigmatic magnetosphere and ice-giant atmospheres more broadly.

via extremetech.com|
#auroras#ionosphere#magnetosphere
Webb’s 17-hour stare at Uranus uncovers baffling auroras
space-and-spaceflight1 month ago

Webb’s 17-hour stare at Uranus uncovers baffling auroras

The James Webb Space Telescope spent 17 hours peering at Uranus to map its upper atmosphere in three dimensions, revealing two bright auroral bands near the planet’s unusual magnetic poles and a depletion of ions between them. The observations show how Uranus’s tilted, offset magnetosphere shapes energy flow and auroral activity, with the upper atmosphere still cooling since the 1986 Voyager flyby, providing new insights into the dynamics of ice-giant atmospheres.

via Gizmodo|
#auroras#magnetosphere#space-and-spaceflight
Earth’s Atmosphere Reaches the Moon via Solar Wind, Study Finds
science2 months ago

Earth’s Atmosphere Reaches the Moon via Solar Wind, Study Finds

A new study, supported by Apollo samples, argues that particles from Earth’s atmosphere have been carried into space by the solar wind and embedded in the Moon’s soil for billions of years. Contrary to earlier ideas that Earth’s magnetic field blocked such transfer, the modern magnetosphere may aid it by expanding Earth’s atmospheric reach and by channeling material to the Moon through the magnetotail when the Moon is in certain orbital phases. This ongoing Earth–Moon material exchange could supply volatile elements like oxygen, hydrogen, and nitrogen for future lunar exploration and provides a chemical record of Earth’s ancient atmosphere, with the findings published in Nature Communications Earth & Environment.

via CTV News|
#earth-atmosphere#lunar-regolith#magnetosphere
Earth's air drifts to the Moon for billions of years, new study suggests
science2 months ago

Earth's air drifts to the Moon for billions of years, new study suggests

New simulations and Apollo lunar samples indicate Earth’s atmospheric particles (oxygen, nitrogen and other volatiles) have been transported to the Moon by the solar wind interacting with Earth’s magnetic field for billions of years, embedding in lunar soil. This challenges the idea that the Moon’s volatiles come mainly from the Sun or from its formation, suggesting a long‑running Earth–Moon chemical exchange with implications for understanding Earth’s ancient atmosphere and for future lunar resource use.

via CNN|
#earth-atmosphere#lunar-soil#magnetosphere
Earth's Atmosphere Is Leaking to the Moon, Revealing a Hidden Connection
science3 months ago

Earth's Atmosphere Is Leaking to the Moon, Revealing a Hidden Connection

Scientists have discovered that Earth's magnetic field allows atmospheric particles to escape and be deposited on the Moon, turning lunar soil into a record of Earth's ancient atmosphere. This process occurs as the Moon passes through Earth's magnetotail, where charged particles from Earth's upper atmosphere are guided onto the lunar surface, providing valuable insights into Earth's atmospheric history and the dynamics of planetary magnetospheres.

via Indian Defence Review|
#atmospheric-escape#earths-atmosphere#lunar-dust
Scientists Observe First 'Switchback' Phenomenon in Earth's Magnetosphere
science4 months ago

Scientists Observe First 'Switchback' Phenomenon in Earth's Magnetosphere

Scientists have for the first time detected a zigzag-like 'switchback' phenomenon in Earth's magnetosphere, a plasma structure associated with magnetic reconnection events that can influence space weather and potentially disrupt Earth's technological systems. The discovery was made by NASA's MMS spacecraft near the magnetosheath, providing new insights into how solar wind interacts with Earth's magnetic field and improving the ability to predict geomagnetic storms.

via IFLScience|
#earth#magnetic-reconnection#magnetosphere