Isabella Rossellini by Jean Christian Bourcart
"They’re lights in the sky kid."
Well, I could tell they were lights in the sky, but what were they?
(“But what IS it?!”)
Ohhhhhh 2001 is so good
SOOOOO GOOOOOOOD. the ending is SO much better (in many ways) than the movie ending (and I can understand why the movie ending is so just, like, what? not that I don’t absolutely love it of course. but having it a little more spelled out is even more awe-inspiring than having it be completely open to interpretation.)
I’m having feelings about stars.
The corona is the outer part of the solar atmosphere. Its name derives from the fact that, since it is extremely tenuous with respect to the lower atmosphere, it is visible in the optical band only during the solar eclipses as a faint crown (corona in Latin) around the black moon disk. When inspected through spectroscopy the corona reveals unexpected emission lines, which were first identified as due to a new element (coronium) but which were later ascertained to be due to high excitation states of iron. It became then clear that the corona is made of very high temperature gas, hotter than 1 MK(megakelvin). Almost all the gas is fully ionized there and thus interacts effectively with the ambient magnetic field. It is for this reason that the corona appears so inhomogeneous when observed in the X-ray band, in which plasma at million degrees emits most of its radiation. In particular, the plasma is confined inside magnetic flux tubes which are anchored on both sides to the underlying photosphere. When the confined plasma is heated more than the surroundings, its pressure and density increase. Since the tenuous plasma is optically thin, the intensity of its radiation is proportional to the square of the density, and the tube becomes much brighter than the surrounding ones and looks like a bright closed arch: a coronal loop.
Credit: Fabio Reale
While sunspots are relatively cool and quiescent regions on the Sun, the photosphere around them sometimes erupts with outflows of high energy particles in active regions. Most often these eruptions are in the form of loops and sheets called prominences which remain under the control of the intense magnetic fields associated with solar storms. There are other events which in a matter of minutes can release enormous amounts of energy and eject material out into space. Such violent events are called solar flares.
Images credit: TRACE/NASA
Rock Alumna, Het Nationale Junior Company Member, Michaela DePrince. Photo by Luis Pons.
ahh. you haven’t read it before. *grins evilly*
Holy shit I just finished reading 2001 holy shit holy shit holy shit