![]() | |||
| |||
|
|||
Recent Articles
|
Topic: Magnetosphere
The missions – Juno and InSight – have each increased our understanding of our solar system, as well as spurred new sets of diverse questions. ![]() NASA has extended both the Juno mission at Jupiter through September 2025 (left) and the InSight mission at Mars through December 2022. (NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA has Two Heliophysics Missions that will Explore Sun, Earth’s Aurora
Understanding the physics that drive the solar wind and solar explosions – including solar flares and coronal mass ejections – could one day help scientists predict these events, which can impact human technology and explorers in space. ![]() From the International Space Station’s orbit 269 miles above the Indian Ocean southwest of Australia, this nighttime photograph captures the aurora australis, or “southern lights.” Russia’s Soyuz MS-12 crew ship is in the foreground and Progress 72 resupply ship in the background. (NASA) «Read the rest of this article» Sections: Technology | No Comments
NASA study shows Earth, Moon used to share Magnetic Shield
“The Moon seems to have presented a substantial protective barrier against the solar wind for the Earth, which was critical to Earth’s ability to maintain its atmosphere during this time,” said Jim Green, NASA’s chief scientist and lead author of the new study. “We look forward to following up on these findings when NASA sends astronauts to the Moon through the Artemis program, which will return critical samples of the lunar South Pole.” ![]() This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA) «Read the rest of this article» Sections: Technology | No Comments
NASA discovers changing dent in Earth’s Magnetic Field
Earth’s magnetic field acts like a protective shield around the planet, repelling and trapping charged particles from the Sun. But over South America and the southern Atlantic Ocean, an unusually weak spot in the field – called the South Atlantic Anomaly, or SAA – allows these particles to dip closer to the surface than normal. ![]() This stereoscopic visualization shows a simple model of the Earth’s magnetic field. The magnetic field partially shields the Earth from harmful charged particles emanating from the Sun. (NASA’s Goddard Space Flight Center) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Juno Spacecraft gets first ever pictures of Jupiter’s Moon Ganymede
The only moon in the solar system that is larger than the planet Mercury, Ganymede consists primarily of water ice. Its composition contains fundamental clues for understanding the evolution of the 79 Jovian moons from the time of their formation to today. ![]() These images the JIRAM instrument aboard NASA’s Juno spacecraft took on Dec. 26, 2019, provide the first infrared mapping of Ganymede’s northern frontier. Frozen water molecules detected at both poles have no appreciable order to their arrangement and a different infrared signature than ice at the equator. (NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Dione CubeSat mission to study Earth’s Upper Atmosphere, Space Weather
The new mission, called Dione after the ancient Greek goddess of the oracles, will carry four miniaturized instruments to study how Earth’s upper atmospheric layers react to the ever-changing flow of solar energy into the magnetosphere — the enveloping bubble of magnetic field around Earth that deflects most of the particles that erupt from the Sun. Earth’s upper atmosphere is where most low-Earth-orbiting satellites reside, and their orbits are strongly affected by sudden density changes created by space weather. ![]() Dione will gather data not collected since NASA’s dual-spacecraft Dynamics Explorer mission launched in the early 1980s. (NASA) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Juno spacecraft reaches halfway point in Jupiter missionNASA Jet Propulsion Laboratory
Juno is in a highly-elliptical 53-day orbit around Jupiter. Each orbit includes a close passage over the planet’s cloud deck, where it flies a ground track that extends from Jupiter’s north pole to its south pole. ![]() A south tropical disturbance has just passed Jupiter’s iconic Great Red Spot, and is captured stealing threads of orange haze from the Great Red Spot in this series of color-enhanced images from NASA’s Juno spacecraft. (NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstadt/Sean Doran) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Magnetospheric Multiscale Spacecraft finds new Magnetic Event in near Earth EnvironmentWritten by Mara Johnson-Groh
Magnetic reconnection is one of the most important processes in the space — filled with charged particles known as plasma — around Earth. ![]() In a turbulent magnetic environment, magnetic field lines become scrambled. As the field lines cross, intense electric currents (shown here as bright regions) form and eventually trigger magnetic reconnection (indicated by a flash), which is an explosive event that releases magnetic energy accumulated in the current layers and ejects high-speed bi-directional jets of electrons.(NASA Goddard’s Conceptual Image Lab/Lisa Poje; Simulations by: University of Chicago/Colby Haggerty; University of Delaware/Tulasi Parashar) «Read the rest of this article» Sections: Technology | No Comments
NASA’s THEMIS Mission helps reveal mystery of Pulsating AuroraWritten by Mara Johnson-Groh
While scientists have long known auroras to be associated with solar activity, the precise mechanism of pulsating auroras was unknown. Now, new research, using data from NASA’s Time History of Events and Macroscale Interactions during Substorms — or THEMIS — mission and Japan’s Exploration of energization and Radiation in Geospace — shortened to ERG, or also known as Arase — satellite, has finally captured the missing link thought responsible for these auroras. «Read the rest of this article» Sections: Sports | No Comments
NASA finds long lost IMAGE SatelliteWritten by Miles Hatfield
On January 30th, NASA — along with help from a community of IMAGE scientists and engineers — confirmed that the signal was indeed from the IMAGE spacecraft. Whatever the next steps for IMAGE may be, the mission’s nearly six years in operation provided robust research about the space around Earth that continue to guide science to this day. «Read the rest of this article» Sections: Technology | No Comments
|
Now playing at the Movies
Archives |
|
© 2006-2021 Clarksville, TN Online is owned and operated by residents of Clarksville Tennessee.
|