Infinity Imagined
Multicellular Organic
Neural Network
Lives in Nitrogen-Oxygen Atmosphere
270 K - 300 K
Eats, Breathes, Thinks, Creates

Synapse EM
This EM image reveals a synapse between an axon and dendrite. Note the presence of numerous synaptic vesicles and mitochondria in the axon.

Transmission electron micrograph of the mitochondria

SCIENTIFIC ILLUSTRATION:  NucleosomeThe Mediterranean Institute for Life SciencesSplit, Croatia
High resolution ray-traced model of a nucleosome, isolated on black.

A nucleosome is the basic unit of DNA packaging in eukaryotes, consisting of a segment of DNA wound in sequence around four histone protein cores.  This structure is often compared to thread wrapped around a spool.
Nucleosomes form the fundamental repeating units of eukaryotic chromatin, which is used to pack the large eukaryotic genomes into the nucleus while still ensuring appropriate access to it.  In mammalian cells approximately 2 m of linear DNA have to be packed into a nucleus of roughly 10 µm diameter.  
Nucleosomes are folded through a series of successively higher order structures to eventually form a chromosome; this both compacts DNA and creates an added layer of regulatory control, which ensures correct gene expression.
(Nucleosome - Wikipedia)

Saturn’s moon Rhea is held in the centre of the frame; Tethys moves behind it.  Photographed by Cassini, 8 July 2006.
Earth seen from the Moon by the astronauts of Apollo 11.
Earth seen by the GOES-14 weather satellite, May 22nd 2013.
Earth seen by the GOES-14 weather satellite, May 22nd 2013.

Cmdr. Kevin Ford.  C. Hadfield, R Romanenko and Marshburn enroute to ISS.  Beautiful - amazing!

What’s that behind Titan? It’s another of Saturn’s moons: Tethys. The robotic Cassini spacecraft orbiting Saturn captured the heavily cratered Tethys slipping behind Saturn’s atmosphere-shrouded Titan. The largest crater on Tethys, Odysseus, is easily visible on the distant moon. Titan shows not only its thick and opaque orange lower atmosphere, but also an unusual upper layer of blue-tinted haze. Tethys, at about 2 million kilometers distant, was twice as far from Cassini as was Titan when the above image was taken. In 2004, Cassini released the Hyugens probe which landed on Titan and provided humanity’s first views of the surface of the Solar System’s only known lake-bearing moon.
Credit: APOD
« Future   33 34 35 36 37 38 39 40 41 42   Past »

powered by tumblr