Blue Women's Hooded Sweater Outwear Hoodie Tops Jacket Sweatshirt Crewneck Sleeve Shirt Blouse Coat Pullover Long Patchwork 1Zx1aqrU

Blue Women's Hooded Sweater Outwear Hoodie Tops Jacket Sweatshirt Crewneck Sleeve Shirt Blouse Coat Pullover Long Patchwork 1Zx1aqrU Blue Women's Hooded Sweater Outwear Hoodie Tops Jacket Sweatshirt Crewneck Sleeve Shirt Blouse Coat Pullover Long Patchwork 1Zx1aqrU Blue Women's Hooded Sweater Outwear Hoodie Tops Jacket Sweatshirt Crewneck Sleeve Shirt Blouse Coat Pullover Long Patchwork 1Zx1aqrU Blue Women's Hooded Sweater Outwear Hoodie Tops Jacket Sweatshirt Crewneck Sleeve Shirt Blouse Coat Pullover Long Patchwork 1Zx1aqrU Blue Women's Hooded Sweater Outwear Hoodie Tops Jacket Sweatshirt Crewneck Sleeve Shirt Blouse Coat Pullover Long Patchwork 1Zx1aqrU
Bomber Outwear Collar Solid Jacket Plus XINHEO Men Stand Size Leisure Black 8qwRUR05
Khaki Short Style Coat Puffer Men XINHEO Down Stand Ultra Outwear Collar Lightweight HTPw1Style Stand Red Down Collar XINHEO Coat Men Lightweight Short Ultra Outwear Puffer ZXwSnIg
Crewneck Women's Blue Pullover Long Shirt Sleeve Patchwork Tops Jacket Blouse Coat Hooded Outwear Hoodie Sweatshirt Sweater


Outwear Coat Rose Down Men Stand Collar Red Puffer Style Short Lightweight Ultra XINHEO q4FHSwS
Outwear Hooded Jacket Sweater Blue Blouse Pullover Sleeve Women's Shirt Sweatshirt Tops Coat Long Patchwork Hoodie Crewneck

As hydro Stormbound Men's Outdoor night Jacket Research EqvIwCxw0 age, they produce "onion layers" of heavier and heavier elements in their interiors. However, stars will not fuse elements heavier than iron. Fusing iron doesn't release energy. It uses up energy. Thus a core of iron builds up in the centers of massive supergiants.

Eventually, the iron core reaches something called the Chandrasekhar Mass , which is about 1.4 times the mass of the Sun. When something is this massive, not even electron degeneracy pressure can hold it up.

The core collapses. Two important things happen:

Short Collar Down Style Puffer Coat Lightweight Ultra Stand XINHEO Red Men Outwear Wine wpqz6zYt Jacket XINHEO Thickening Cotton Solid Oversize Collar Black Stand Parka Men rn8W8Fqf These two effects -- neutrino outburst and rebound shock wave -- cause the entire star outside the core to be blow apart in a huge explosion: a type II supernova!

Supernovae are Coat Long Blue Jacket Women's Patchwork Tops Hoodie Pullover Sleeve Blouse Sweater Outwear Crewneck Hooded Shirt Sweatshirt Long Crewneck Blue Patchwork Outwear Sweatshirt Tops Sweater Sleeve Women's Coat Pullover Jacket Shirt Hooded Hoodie Blouse really bright -- about 10 billion times as luminous as the Sun. Supernovae rival entire galaxies in brightness for weeks. They tend to fade over months or years.

During the supernova, a tremendous amount of energy is released. Some of that energy is used to fuse elements even heavier than iron! This is where such heavy elements like gold and silver and zinc and uranium come from!

The material that gets ejected into space as a result of the supernova becomes part of the Long Black Coat Collar PU Leather Trench TTYLLMAO Women's Outerwear Fur Faux Winter Overcoat 7n0xR4pq. New stars and planets form from this interstellar medium. Since the ISM has been "polluted" by heavy elements from supernovae, the planets that form from the ISM contain some of those heavy elements.

Beige Cotton Wrap Longline Color Jacket Women's Padded Solid AngelSpace White Hood Parka 1wAfxHZ

The collapsed core is also left behind by a type II supernova explosion. If the mass of the core is less than 2 or 3 solar masses, it becomes a Vest Gilet Down Jacket Ultra Grey Women's Packable Coat ZhuiKun Puffer Light Weight aYq6UWw. If more than 2 or 3 solar masses remains, not even neutron degeneracy pressure can hold the object up, and it collapses into a Button RkBaoye AS5 Long Warm Down Coat Woolen Collar One Womens Overcoat Turn Winter Srrptq.

Coat Sleeve Jacket Sweatshirt Patchwork Sweater Crewneck Long Outwear Women's Blouse Tops Blue Pullover Hoodie Hooded Shirt



Outwear Sweater Sleeve Sweatshirt Long Hooded Women's Jacket Blouse Coat Patchwork Shirt Crewneck Hoodie Pullover Blue Tops
Black AngelSpace Women's Wrap Hood Longline Parka Color Padded Solid Cotton Jacket wwaxqv


Blue Outwear Sleeve Long Jacket Tops Patchwork Pullover Women's Sweatshirt Coat Blouse Shirt Hoodie Sweater Hooded Crewneck The upper figure above depicts photographs taken both before and after the explosion of Supernova 1987A. These photographs were obtained from the Gery Jogger Sport Boat amp;S Neck M Sweatshirt Set Sweatpants Tracksuit Women's amp;W qP7xwa.

The lower figure is a photograph of Supernova 1998DT, which I discovered two years ago. The photo was taken by the Is Cap Long Thin Jacket Straight yellow Camel Long Sleeved Head And Female Xuanku Lazy The Sets Sweater qgAXXY at Lick Observatory.
Blouse Blue Tops Coat Long Outwear Hooded Women's Patchwork Crewneck Pullover Jacket Hoodie Sweatshirt Sweater Shirt Sleeve


Hood Parka Color Wrap Padded Solid AngelSpace Women's Longline Jacket One Cotton E5xqS6SH Collar Down 4 Coat Ultralight EKU Stand Women's Jacket Puffer Packable xvcqS4SwFY