NASA | MMS Science Overview: The Many Mysteries of MMS

Scientists Michael Hesse and John Dorelli explain the science objectives of the MMS mission.

The Magnetospheric Multiscale (MMS) mission is comprised of four identically instrumented spacecraft that will use Earth’s magnetosphere as a laboratory to study the microphysics of three fundamental plasma processes: magnetic reconnection, energetic particle acceleration, and turbulence. These processes occur in all astrophysical plasma systems but can be studied in situ only in our solar system and most efficiently only in Earth’s magnetosphere, where they control the dynamics of the geospace environment and play an important role in the processes known as “space weather.”

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[Willard_and_Wee-un]

Every time I see animations of these spacecrafts I always wonder how those big long 60m wire booms work. How do they stay straight? Does the craft have to spin and just let them wind out? Is 3 rpm enough to fling them out? Will the wire generate electricity as it travels through the space weather? Is the spin aligned to the orbit? If the spacecraft was to spin faster or suddenly stop spinning would they spool up around the spacecraft?

[michaelodell]

Todays scientists and mission  in space is so cool.

[michaeltaylor]

0:15 "The universe is full of plasma."
Then why all the resistance, (no pun intended, ) to the electric universe cosmology?
So much talk of plasma energy and magnetic energy yet not a word of electric energy?

[stp]

The depth of discussion submerges most every congressperson.  

[michaeltaylor]

Has the magnetic re-connection theory ever been verified in a laboratory experiment?

[jhonjhones]

Pourrait-on avoir une traduction en VF svp

[rongrongism]

These mysteries and others would need to be entirely solved in order to formulate accurate orbital paths. Variables to compensate for are thousands, and unknown ones are unknown, and some obstacles, course correction is not an option.
Basically, I don't understand how something that requires absolute precision to calculate, can be a complete mystery, if apparently these obstacles were hurdled 50 years ago.
Enlighten me.

[ASTROTZUR]

00:32 Magnetic energy is converted into plasma energy? Isn't plasma a state of matter? What's plasma energy?

[KazenoniKakuremi]

So something, like a multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) ? ...you know for the Molybdenum isotope ratios....
So we (US) really don't know, _'about that thing'_ ! Jesucristo! I thought we were bullsh8ttin
_'So winter could actually be coming'_

[ashutoshdwivedi]

My brother losted in last time he making a UFO vedio they tell me in mobile then i never see him i hate alines