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As Virginia Hughes noted in a recent piece for National Geographic’s Phenomena blog, the most common depiction of a synapse (that communicating junction between two neurons) is pretty simple:

Signal molecules leave one neuron from that bulby thing, float across a gap, and are picked up by receptors on the other neuron. In this way, information is transmitted from cell to cell … and thinking is possible.

But thanks to a bunch of German scientists - we now have a much more complete and accurate picture. They’ve created the first scientifically accurate 3D model of a synaptic bouton (that bulby bit) complete with every protein and cytoskeletal element.

This effort has been made possible only by a collaboration of specialists in electron microscopy, super-resolution light microscopy (STED), mass spectrometry, and quantitative biochemistry.

says the press release. The model reveals a whole world of neuroscience waiting to be explored. Exciting stuff!

You can access the full video of their 3D model here.

Credit: Benjamin G. Wilhelm, Sunit Mandad, Sven Truckenbrodt, Katharina Kröhnert, Christina Schäfer, Burkhard Rammner, Seong Joo Koo, Gala A. Claßen, Michael Krauss, Volker Haucke, Henning Urlaub, Silvio O. Rizzoli

In case you all missed it.

Astronomers find a new type of planet: The 'mega-Earth'


Typically, planets much larger than Earth would be gas giants. That’s what we thought, anyway. But now astronomers have discovered an exoplanet seventeen times heavier than Earth, made up of rock and solids, some 560 light-years away. Not only is the planet exceptionally large for its composition, it’s also surprisingly old. Its parent solar system is 11 billion years old. In order to make the heavier elements needed to create an earthy planet, you require stellar nucleosynthesis—stars merging atomic nuclei into successively heavier elements until they explode, dispersing the mass, which can then form planets. There weren’t a whole lot of heavy elements present in the universe less than three billion years after the Big Bang, but apparently, there was enough to create Kepler-10c. Fascinating.

Think of the implications for life elsewhere in the universe. Although we have yet to confirm its existence, the conditions conducive to it could have appeared much earlier than one would have thought.

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