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    coronal mass ejections tagged posts

    Face to Face with Sun-Eclipsing Proba-3

    January 4, 2024, Categories  Astronomy/Space

    Face to face with sun-eclipsing Proba-3
    Proba-3’s pair of satellites will be in a highly elliptical orbit around Earth, performing formation flying maneuvers as well as scientific studies of the solar corona. The occulter satellite will have solar panels on its sun-facing side. Credit: ESA-P. Carril

    Through exquisite, millimeter-scale, formation flying, the dual satellites making up ESA’s Proba-3 will accomplish what was previously a space mission impossible: Cast a precisely held shadow from one platform to the other, in the process blocking out the fiery sun to observe its ghostly surrounding atmosphere on a prolonged basis.

    Ahead of the Proba-3 pair launching together later this year, the scientists who will make use of Proba-3 observations were able to see the satellites with their own eyes...

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    New Study Identifies Mechanism driving the Sun’s Fast Wind

    June 12, 2023, Categories  Astronomy/Space

    Image credit: Amanda Smith / University of Birmingham

    Release of magnetic energy near the sun’s surface enables the solar wind to reach gravity-defying speeds. In a paper published June 7, 2023 in the journal Nature, a team of researchers used data from NASA’s Parker Solar Probe to explain how the solar wind is capable of surpassing speeds of 1 million miles per hour. They discovered that the energy released from the magnetic field near the sun’s surface is powerful enough to drive the fast solar wind, which is made up of ionized particles — called plasma — that flow outward from the sun.

    James Drake, a Distinguished University Professor in the University of Maryland’s Department of Physics and Institute for Physical Science and Technology (IPST), co-led this research alongside firs...

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    Solar Storms can Destroy Satellites with ease: A Space Weather expert explains the science

    March 5, 2022, Categories  Astronomy/Space

    On Feb. 4, 2022, SpaceX launched 49 satellites as part of Elon Musk’s Starlink internet project, most of which burned up in the atmosphere days later. The cause of this more than US$50 million failure was a geomagnetic storm caused by the sun.

    Geomagnetic storms occur when space weather hits and interacts with the Earth. Space weather is caused by fluctuations within the sun that blast electrons, protons and other particles into space. When space weather reaches Earth, it triggers many complicated processes that can cause a lot of trouble for anything in orbit. And engineers are working to better understand these risks and defend satellites against them.

    What causes space weather?

    The sun is always releasing a steady amount of charged particles into space...

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    Multitasking New Horizons observed Solar Wind changes on journey to Pluto

    April 6, 2016, Categories  Astronomy/Space

    Space environment data collected by New Horizons over a billion miles of its journey to Pluto will play a key role in testing and improving models of the space environment throughout the solar system. This visualization is one example of such a model: It shows the simulated space environment out to Pluto a few months before New Horizons’ closest approach. Drawn over the model is the path of New Horizons up to 2015, as well as the current direction of the two Voyager spacecraft – which are currently at three or four times New Horizons’ distance from the sun. The solar wind that New Horizons encountered will reach the Voyager spacecraft about a year later. Credit: NASA's Goddard Space Flight Center Scientific Visualization Studio, the Space Weather Research Center (SWRC) and the Community-Coordinated Modeling Center (CCMC), Enlil and Dusan Odstrcil (GMU)

    Space environment data collected by New Horizons over a billion miles of its journey to Pluto will play a key role in testing and improving models of the space environment throughout the solar system. This visualization is one example of such a model: It shows the simulated space environment out to Pluto a few months before New Horizons’ closest approach. Drawn over the model is the path of New Horizons up to 2015, as well as the current direction of the two Voyager spacecraft – which are currently at three or four times New Horizons’ distance from the sun. The solar wind that New Horizons encountered will reach the Voyager spacecraft about a year later...

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