NASA MMS

NASA MMS

mms.gsfc.nasa.gov
NASA / The Magnetospheric Multiscale(MMS)mission is comprised of four identically instrumented spacecraft that will study the microphysics of magnetic reconnection.
NASA MMS
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The Heart of Space Weather Observed in Action | NASA

Two NASA spacecraft have provided the most comprehensive movie ever of a mysterious process at the heart of all explosions on the sun: magnetic reconnection. Magnetic reconnection happens when magnetic field lines come together, .

Thermal technician adds the final touches to electrical wires in Propulsion Module #1.

Thermal technician adds the final touches to electrical wires in Propulsion Module

Magnetized plasmas are threaded throughout with magnetic lines of force, which are thought of as being "frozen" in the plasma. However, if magnetic fields in adjacent regions have significantly different orientations, the field pattern can change, with field lines becoming "unfrozen," breaking, and the "re-connecting" with those in the adjacent region. When this happens, the energy stored in the magnetic fields is released as kinetic energy and heat.

Magnetized plasmas are threaded throughout with magnetic lines of force, which are thought of as being "frozen" in the plasma. However, if magnetic fields in adjacent regions have significantly different orientations, the field pattern can change, with field lines becoming "unfrozen," breaking, and the "re-connecting" with those in the adjacent region. When this happens, the energy stored in the magnetic fields is released as kinetic energy and heat.

When different parts of a magnetized plasma cell move relative to each other, the magnetic field within it fights back and energy is stored in the stretched and deformed magnetic field. This energy is released when the plasma cell is divided by reconnection of the magnetic fields, disconnecting the magnetic linkage between the two regions in relative motion, and creating two distinct cells that are no longer linked, allowing the relative motion to proceed.

Inflowing plasma carries oppositely directed magnetic field lines into the diffusion region, where, separated by as little as the four MMS spacecraft will make the measurements needed to determine the processes that drive reconnection

The Sun Reconnects: magnetic reconnection happens when magnetic field lines come together, break apart, and then exchange partners, snapping into new positions and releasing a jolt of magnetic energy. This process lies at the heart of giant explosions on the sun such as solar flares and coronal mass ejections, which can fling radiation and particles across the solar system. W

Two NASA spacecraft have provided the most comprehensive movie ever of a mysterious process at the heart of all explosions on the sun: magnetic reconnection.

Solar flares happen when the powerful magnetic fields in and around the Sun reconnect. They're usually associated with active regions, often seen as sun spots, where the magnetic fields are strongest....http://wp.me/p1wLoy-9Cg

Flares happen when the powerful magnetic fields in and around the sun reconnect. They're usually associated with active regions, often seen as sun spots, whe.

Computer simulation of the magnetic reconnection in the heliosheath, which look like bubbles, or sausages. Credit: NASA/J.F. Drake, M. Swisdak, M. Opher

Strange magnetic bubbles at the edge of the solar system. Submitted by Michiel on Fri, - The Voyager spacecraft discovered a sea of magnetic bubbles frothing up out where the solar system meets the interstellar medium.

An overlap of data from two NASA spacecraft confirms a sighting of magnetic reconnection on the sun, a process of realigning magnetic fields that lies at the heart of space weather. The teal image, from SDO, shows the shape of magnetic field lines in the sun's atmosphere. The RHESSI data is in orange. - NASA/SDO/RHESSI/Goddard

Two NASA spacecraft have provided the most comprehensive movie ever of a mysterious process at the heart of all explosions on the sun: magnetic reconnection. Magnetic reconnection happens when magnetic field lines come together, .

Cluster hears the heartbeat of magnetic reconnection

Paris (ESA) May 2013 - For the first time, scientists have resolved the detailed structure of the core region where magnetic reconnection takes place in the magnetosphere of Earth using unprecedented wave measurements.

Vodcast #3: NASA EDGE Magnetic Reconnection - NASA EDGE revisits MMS for an in depth look at the greatest mystery of the magnetosphere; magnetic reconnection. Guests include Tom Moore, Ken Shelton, Ulrik Gleise, and Art Jacques. Also featured is the suite of instruments flying on MMS, such as the Dual Electron Spectrometer, the Dual Ion Spectrometer and the Fast Plasma Investigation.

NASA EDGE revisits MMS for an in depth look at the greatest mystery of the magnetosphere;

Vodcast #2: MMS (Magnetospheric Multiscale) Propulsion  - NASA EDGE returns to NASA Goddard to monitor the progress of the Magnetospheric Multi-scale Mission. We go inside the clean room to get a closer look at how this highly maneuverable set of satellites is powered. It's part propulsion, part co-host, and part two of MMS.

Vodcast #2: MMS (Magnetospheric Multiscale) Propulsion - NASA EDGE returns to NASA Goddard to monitor the progress of the Magnetospheric Multi-scale Mission. We go inside the clean room to get a closer look at how this highly maneuverable set of satellites is powered. It's part propulsion, part co-host, and part two of MMS.