filamentous

Dust filaments of NGC 4217

In this image the NASA/ESA Hubble Space Telescope takes a close look at the spiral galaxy NGC 4217, 60 million light-years away. The galaxy is seen almost perfectly edge on and is a perfect candidate for studying the nature of extraplanar dust structures — the patterns of gas and dust above and below the plane on the galaxy, seen here as brown wisps coming off NGC 4217.

These tentacle-like filaments are visible in the Hubble image only because the contrast with their surroundings is so high. This implies that the structures are denser than their surroundings. The image shows dozens of dust structures some of which reach as far as 7000 light-years away from the central plane. Typically the structures have a length of about 1000 light-years and are about 400 light-years in width.

Credit: ESA/Hubble & NASA
Acknowledgement: R. Schoofs
Source: http://www.spacetelescope.org/images/potw1503a/

On 15 April 2001, a relatively small filament in Active Region 9415 began to erupt (shown in this movie). Within about 10 minutes, the material (seen here in the 171Å pass band, most sensitive to emission from gas at around 1 million Kelvin) reached up to a height of approximately 80,000 km. The magnetic field within the filament continues to writhe and twist for a while longer, but most of the material begins to fall down again.

Image Credit: TRACE

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Laywood 

New 3D Printing filament allows makers to create objects in wood, created by Kai Parthy - via 3Ders.org:

This wood filament LAYWOO-D3 is a wood/polymer composite - the filament contains recycled wood and harmless binding polymers. The material has similar thermal durability as PLA and can be printed between 175°C and 250°C. “After printing it looks like wood and smells like wood.” Depending on the temperature you can even print wooden-like objects with annual rings. At 180°C, the prints has a light color, at 245°C it becomes darker. Afterwards the printed objects can be cut, grinded or painted.

You can watch a video via the excellent Tumblr blog of roomthily, or find out more at Hack A Day and 3Ders.org

LDN 988: Dark Nebula in Cygnus : Obscuring the rich starfields of northern Cygnus, dark nebula LDN 988 lies near the center of this cosmic skyscape. Composed with telescope and camera, the scene is some 2 degrees across. That corresponds to 70 light-years at the estimated 2,000 light-year distance of LDN 988. Stars are forming within LDN 988, part of a larger complex of dusty molecular clouds along the plane of our Milky Way galaxy sometimes called the Northern Coalsack. In fact, nebulosities associated with young stars abound in the region, including variable star V1331 Cygni shown in the inset. At the tip of a long dusty filament and partly surrounded by a curved reflection nebula, V1331 is thought to be a T Tauri star, a sun-like star still in the early stages of formation. via NASA

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