Nicely done, Pixar.
using nothing more than newton’s laws of gravitation, we astronomers can confidently predict that several billion years from now our home galaxy, the milky way, will merge with our neighbouring galaxy, andromeda. because the distances between the stars are so great compared to their sizes, few if any stars in either galaxy will actually collide.
any life on the worlds of that far off future should be safe, but they will be treated to an amazing billion-year-long lightshow.
a dance of a half a trillion stars, to music first heard on one little world, by a man who had but one true friend.
Ten pictures that will make you love advertising
Crows are one of the smartest animals out here.
look at this fuckin smart ass bird figuring out that the level of the water rises if you drop shit into it what a fuckin genius
IVE BEEN LAUGHING AT THIS THEY JUST STARE AT EACH OTHER HOLDING PUPPIES
THERE ARE CHILDREN ON THIS SITE
mY MOM WAS LOOKING OVER MY SHOULDER AND WHEN SHE SAW THIS SHE DROPPED HER PHONE IN SHOCK AND THE SCREEN CRACKED
Sometime’s the world is a tough place, the days get to you and the nights drag on, so here’s a story of a pet penguin who goes shopping.
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