Ebola Virus Particles Colorized scanning electron micrograph of filamentous Ebola virus particles (blue) budding from a chronically infected VERO E6 cell (yellow-green). Credit: NIAID

Sun Clouds

Better known as solar prominences or filaments, Prominences are dense clouds of material suspended above the surface of the Sun by loops of magnetic field.

Image by J P Brahic

Prominences and filaments are actually the same things except that prominences are seen projecting out above the limb, or edge, of the Sun. Both filaments and prominences can remain in a quiet or quiescent state for days or weeks. However, as the magnetic loops that support them slowly change, filaments and prominences can erupt and rise off of the Sun over the course of a few minutes or hours. [**]

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Filaments on the Inner Ring of the Helix Nebula

This cropped version of the Helix Nebula (also known as NGC 7293) mosaic shows cometary-filaments embedded along a portion of the inner rim of the nebula’s red and blue gas ring. The Nebula is in the constellation Aquarius at a distance of 650 light-years from Earth. The Helix is one of the nearest planetary nebulae to Earth and it a frequency target of study. Because of its ere stare it is sometimes called the “Eye of God”.

Credit: NASA/ESO/Hubble/Helix Imaging Team

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The Cell’s Muscles and BonesTorsten Wittmann

Cell movement begins with lamellipodia. A thin sheet of actin filaments (light purple) that stretches out to the cell’s periphery, lamellipodia generate pushing forces that drive the cell forward. Microtubules (cyan) can barely penetrate this actin network, but they direct cell motility in other ways, such as controlling cell adhesion and acting as the cell’s internal compass.