Despite the darkness embroidered within the tapestry, the bright promise shall always remain.
The money’s in the banana stand !
This chemical is a fluorophore, containing many aromatic groups and having the ability to absorb light and re-emit a new photon (fluorescence). There are other types of fluorescence that allow re-emission of light at higher energies or even the same energy but in this case the re-emitted light is at a lower energy. Because it is under a UV light, it absorbs the UV and the light that it re-emits will be visible to human eyes. Sadly, what we can see is only a very narrow band of the spectrum, still pretty awesome!
Beautiful liquid fire
When a very massive star, reaching the final stage of its life, exhausts its nuclear fuel it explodes as a supernova. The outer parts of the star are expelled violently into space, while the core completely collapses under its own weight. The outer gaseous layers, mainly hydrogen, still surrounding the core would rush outward, generating a shock wave.
If the core remaining after the supernova is very massive (more than 2.5 times the mass of the Sun), no known repulsive force inside a star can push back hard enough to prevent gravity from completely collapsing the core into a black hole.
If this animation is not awesome, I don’t know what is.
ALL WORK AND NO PLAY MAKES JACK A DULL BOY
DON’T YOU FORGET ABOUT MEEEE
A gaze across a cosmic skyscape, this telescopic mosaic reveals the continuous beauty of things that are. The evocative scene spans some 6 degrees or 12 Full Moons in planet Earth’s sky. Above, folds of red, glowing gas are a small part of an immense, 300 light-year wide arc. Known as Barnard’s loop, the structure is too faint to be seen with the eye, shaped by long gone supernova explosions and the winds from massive stars, and still traced by the light of hydrogen atoms. Barnard’s loop lies about 1,500 light-years away roughly centered on the Great Orion Nebula, a stellar nursery along the edge of Orion’s molecular clouds. But beyond lie other fertile star fields in the plane of our Milky Way Galaxy. Below, the long-exposure composite finds NGC 2170, a dusty complex of nebulae near a neighboring molecular cloud some 2,400 light-years distant.
Image Credit & Copyright: John Davis
“Telepath” - 2ft x 2ft
Linocut print by Orr G.