So the bf and I are going on a two week + long road trip from Portland to Houston including stops in San Francisco, Joshua Tree, Austin, Las Vegas, Death Valley, and Ashland! SO EXCITED!!!
Dark matter: now officially more confusing than ever
Astronomers have one more reason to scratch their heads over the unseen material known as dark matter. Observations of two dwarf galaxies, Fornax and Sculptor, show the dark matter within them is spread out smoothly rather than heaped into a central bulge, contradicting cosmological models.
Researchers know dark matter comprises a far greater percentage of the universe than the ordinary matter making up things like people and stars. Because of this, the distribution of dark matter determines the structure of the cosmos. Galaxies form when they are attracted to and anchored by large clumps of dark matter.
The dwarf galaxies Fornax and Sculptor are themselves made of 99 percent dark matter and only 1 percent normal matter. It is impossible to directly see the dark matter but, by observing the rotation of stars around each galactic center, researchers can detect its influence and map out its distribution.
While simulations suggest that the dark-matter density should increase sharply near the galactic centers, the recent observations found the dark matter spread relatively uniform throughout. Yet if these dwarf galaxies have no “clump” in their center, then what is pinning them in place?
This isnt a brand new invention cobbled together in some mad composer’s laboratory, but a device patended in 1936 (and later in 1953, adding improvements) by Robert H. Keaton. Containing 33 keys, it was ideal for writing out sheet music, though many still preferred to write it out by hand (hipsters, probably). They’re incredibly rare, with only a few said to still exist in nature, though you can get your hands on this mint-condition one for $6,000 USD at etsy.