Yknow Black Dwarfs,,, Do They Actually Exist And Do They Actually Live Longer Than The Universe,,

Behold NGC 6357, “cathedral to massive stars.” Credit: NASA, ESA and Jesús Maíz Apellániz (IAA, Spain). (NASA/APOD)

What is a "nebula"?

A nebula is a large cloud of dust and gas that are star-forming regions. They’re formed when a star dies and its outer layers expand, creating a colourful cloud of gas. In other cases, they’re formed when a star goes supernova (when a really big and bright star dies and explodes).

There are emission nebulae, reflection nebulae and dark nebulae. Emission nebulae are close enough to a star that the gas particles absorb the UV light, get excited and emit their own light. Reflection nebulae are when a nebulae isn’t close enough to a star to absorb it’s UV light so it just reflects it. Dark nebulae aren’t close enough to a star to either absorb it’s light nor reflect it. The only way a dark nebulae is visible is if there’s a star behind it that can act as a backdrop, illuminating the back of the nebulae.

Crab walks around with Jellyfish on its back to protect it from predators

These #jellyfish Cassiopea (upside-down jellyfish) partake in a symbiotic relationship with photosynthetic dinoflagellates and therefore, must lay upside-down in areas with sufficient light penetration to fuel their energy source. Where found, there may be numerous individuals with varying shades of white, blue, green and brown.

Sometimes this jellyfish is picked up by the #crab Dorippe frascone and carried on its back. The crab uses the jellyfish to defend itself against possible predators.

Baobab & Milky Way

A baobab tree and the central band of the Milky Way galaxy in the village of Antsiraraka in Madagscar, July 2010.

Credit: Florian Breuer

The astro-fashion-loving Internet collectively gasped when ESA’s Hubble twitter account posted three gorgeous gowns, by Czech designer Jirina Tauchmanova with only credit “Photo: Vasek”, which google thinks is a Canadian tennis player. For four long days I couldn’t find anymore images, until, today! Which is why I’m sharing a belated #FashionFriday and #StarrySunday combo.

These gown were shown at Serbia Fashion Week back in December 2015 as Jirina Tauchmanova‘s Spring/Summer 2016 collection – I hope that means they will be available for purchase soon!

I think I recognize at least two of the images, NGC 602 & 30 Doradus, but I’m going to have to see these in person to be sure, yes, definitely, and probably try them on, too.

–Emily

Festo’s Bionic Flying Fox, as an example of Bio-mimicry.

German automation company Festo has created a Flying Fox (Fruit Bat) made of a 580g foam body with a carbon fibre skeleton and a membrane like material for the wings.

This robot imitates the exact body and wing movements of an actual bad in order for it to fly. This idea of bio-mimicry is one that is paving the way for a host of natural moving, nature inspired machines. 

Well, this is definitely the most fun I’ve had while making a post.

Inspired by this one from capnphaggit. Images & copyrights: Trifid Nebula (M20) by Marcus Davies, The Cat’s Eye Nebula and Star-forming region Sharpless 2-106 by NASA, ESA, the Hubble Heritage Team (STScI/AURA). Please don’t remove the credits.

The Atmosphere of Mars

A still from the new simulation of solar magnetic activity. Red and yellow colors show where the magnetic field is flowing upward, while blue colors show it moving downward.

Via Popular Science: This Is The Best Model Of The Sun’s Magnetic Field, And It’s Hypnotizing