Posted 3 months ago
Posted 3 months ago
You and I, in fact everyone all over the world,
we’re literally African under the skin; brothers and sisters separated by a mere two thousand generations.
Old-fashioned concepts of race are not only socially divisive,
but scientifically wrong.
Dr. Spencer Wells, Genographic Project lead scientist (via we-are-star-stuff)

(Source: thedragoninmygarage)

Posted 3 months ago

mucholderthen:

The Milky Way, along the Galactic plane
Seen in Wavelengths from Radio frequency through Gamma rays

  1. Radio map at 408 Mhz, showing mainly emission due to scattering of free electrons in the interstellar plasma (i.e. hot gas). The large arc is due to a nearby supernova remnant.
  2. 21 cm radiation map, showing the distribution of neutral Hydrogen gas in the galactic disk, and a few nearby arcs from recent supernovae.
  3. Distribution of H2, or molecular Hydrogen.This maps the “cold” gas in the Galaxy, from which stars will eventually form. The actual observed molecule is CO, rather than H2, which is very difficult to detect directly. The star forming layer of gas is remarkably thin. Infrared maps at the wavelengths 12, 60 and 100 microns.
  4. Infrared emission predominately comes from interstellar dust which is “warmed” to a few 10’s of degrees Kelvin by the ambient radiation field of the Galaxy’s stars.
  5. Near Infrared emission is dominated by cool stars. Since these are typically either old or long-lived stars, this is our best view of the Galaxy with the hot, bright young stars removed. Dust absorption at these wavelengths is very low and we get a clear view all the way to the Galactic center of the disk and bulge.
  6. Optical image of the Galaxy showing the huge effects that dust absorption has on our view of the central regions of the Galaxy. The emission is dominated by young and old stars and by the effects of dust.
  7. X-ray image taken by the Rosat satellite. This view, less clear than the others is dominated by supernova remnants (some of the arc-like features) as well as individual sources of X-radiation from close binary stars or black hole candidates.
  8. Gamma ray view of the Galaxy is dominated by emission from Cosmic Rays (high energy particles) decelerating in the interstellar medium

SOURCE: Chris Flynn’s Galactic Dynamics: Discovering the Milky Way

Posted 3 months ago

basedpidgeot:

ker-smash:

taskscape:

ARE YOU FUCKING SERIOUS

Give me this owl

stuff like this keeps me going. y’know? why should i be sad when there’s a guy somewhere who goes about his normal life with an owl following him about

(Source: poyzn)

Posted 3 months ago
cali-cocaine:

Get that stupid corn outta my face!

cali-cocaine:

Get that stupid corn outta my face!

Posted 3 months ago
Posted 3 months ago

scienceyoucanlove:

Best moment so far

(Source: livefromearth)

Posted 3 months ago
Posted 3 months ago
Posted 3 months ago
Posted 4 months ago
Let the world say you are crazy, then you are free to do what you want.
Janesh Vaidya (via alternative-health)
Posted 4 months ago
Posted 4 months ago
Posted 4 months ago

mediamattersforamerica:

Fox News’ misleading chart hides decades of Arctic Sea ice decline by only showing two years.

The second graphic from Skeptic Science shows what Fox is trying to cover up. 

Posted 4 months ago

ageoftheart:

Impression Sunrise

Artist: Claude Monet
Year: 1872
Type:  Oil on canvas

Fact: This painting gave rise to the name of the Impressionist movement.