Cozy Dark emerging technology began work in 2010 as a skunkworks-style engineering firm and is registered with CCR and NSPIRES.
Our early engineering & design efforts have focused on orbital debris solutions and electrodynamic tether technology.
Zach Urbina founded Cozy Dark with the cooperation of technical, research, and academic colleagues in the Southern California AeroAstro community.
We also have a growing library of space science talks featuring Apollo astronaut Buzz Aldrin, astrophysicist Sean Carroll and more.
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10 posts tagged solar observation
NASA’s Solar Dynamics Observatory captured this video of swirls of darker, cooler plasma caught between competing magnetic forces over the course of 30 hours. The plasma strands rotate like tornadoes caught on magnetic field lines. It sometimes feels incredible to observe such familiar-looking fluid behavior in such unfamiliar places, but it’s just a reminder that physics works no matter where you are.
The Sun’s rotation creates a spiral pattern in the solar magnetic field in interplanetary space, known as the Parker spiral. The drag produced by the spiraling magnetic field causes angular momentum to be transferred away from the Sun. This diagram shows the heliospheric current sheet that separates the regions of space where the magnetic field points toward or away from the Sun.
(via christinetheastrophysicist)
(via proofmathisbeautiful)
Complete time-lapse video of the Sun, spanning the entire months of September, October and November 2011 as seen through the SWAP ultraviolet instrument onboard the European Space Agency spacecraft Proba-2.
via dvdp
Around 0200 UT on 30 July 2011 a fairly powerful, but brief M9-class solar flare erupted from active region 1261. It has been the strongest flare in the last few weeks.
Credit: NASA Solar Dynamics Observatory. via itsfullofstars
NOAA Reveals Solar Activity from June - July 2011 |
Our Sun over several weeks during a period of highly unusual solar activity. This video is comprised of images taken by the Solar X-Ray Imager (SXI), aboard one of the National Oceanic and Atmospheric Association’s (NOAA) weather satellites. via usagov
Major drop in solar activity predicted |
A missing jet stream, fading spots, and slower activity near the poles say that our Sun is heading for a rest period even as it is acting up for the first time in years, according to scientists at the National Solar Observatory (NSO) and the Air Force Research Laboratory (AFRL)
As the current sunspot cycle, Cycle 24, begins to ramp up toward maximum, independent studies of the solar interior, visible surface, and the corona indicate that the next 11-year solar sunspot cycle, Cycle 25, will be greatly reduced or may not happen at all.
The results were announced at the annual meeting of the Solar Physics Division of the American Astronomical Society, which is being held this week at New Mexico State University in Las Cruces.
via itsfullofstars
| Researchers at the University of Central Lancashire have monitored the birth of a sunspot over a period of eight hours using observations from NASA’s Solar Dynamics Observatory (SDO). Dr Stephane Regnier presented the results at the RAS National Astronomy Meeting in Llandudno on April 18.
The emerging sunspot was first detectable at 17:00 UT on 30th May 2010 in SDO magnetograms, which map the magnetic intensity of the solar disc. The first signs were small patches of strong positive and negative magnetic field, separated by around 7 000 km. “About 5 hours after the first signs of the eruption, the magnetic disturbance had grown to around 20 000 km across and we could see a pore form in the visible wavelength images next to the negative polarity.” said Regnier. “By 18:00 UT on June 1st, the sunspots had appeared.” The photosphere is the visible surface of the Sun. Convection cells of hot, bright gas rising up to the surface are surrounded by sinking, cool, darker material, giving the photosphere a granular appearance. These granules are grouped into supergranules, which can be more than 20 000 kilometres across. read moreWatching the Birth of a Sunspot
3D Sunspot (by NASA Goddard Space Flight Center)
The subsurface structure (sound speed) below a sunspot as derived from Doppler measurements by MDI. Using the technique of time-distance helioseismology, three planes are shown. The surface intensity shows the sunspot with the dark central umbra surrounded by the somewhat brighter, filamentary penumbra. The second plane cuts from the surface to 24000 km deep showing areas of faster sound speed as reddish colors and slower sound speed as bluish colors. The third plane (bottom) is a horizontal cut at a depth of 22000 km showing the horizontal variation of sound speed.
(via scipsy)
