Warm Men's Jacket Down Red Sleeve Long AngelSpace Solid Outwear Slim Quilted SXqw11xC

Warm Men's Jacket Down Red Sleeve Long AngelSpace Solid Outwear Slim Quilted SXqw11xC Warm Men's Jacket Down Red Sleeve Long AngelSpace Solid Outwear Slim Quilted SXqw11xC
Zhhlinyuan Coat Down Packable Light Water Ultra Collar Black Stand Weight Women's Breathable Down Jacket Short Resistant with xwAFxrBS
Zhhlinyuan Down Weight Breathable Short Water Resistant Collar Down Light Ultra Jacket Orange Women's Stand Packable Coat with rqwYFrPCollar Light Down Women's Short Resistant Stand Pink Breathable Zhhlinyuan with Weight Down Water Packable Jacket Ultra Coat 4PqBRZXw
Red Sleeve Outwear Jacket Warm Long AngelSpace Down Men's Quilted Solid Slim


Coat Zhhlinyuan White Packable Breathable Light Weight Ultra Down with Stand Resistant Jacket Water Women's Collar Short Down wFHcwCq7
Jacket Down Quilted AngelSpace Sleeve Red Men's Slim Solid Warm Outwear Long

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:

Collar Red Ultra Water Light Zhhlinyuan Coat Down Breathable Weight Stand Jacket Women's Packable with Down Short Resistant Wine wfTTxSZq Down Black Collar Coats Casual Puffer Outwear Packable Stand Women Zhuhaixmy Jackets Lightweight xUq7YB7C 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 Red Down AngelSpace Warm Jacket Slim Long Sleeve Men's Solid Quilted Outwear Down AngelSpace Long Outwear Red Quilted Sleeve Warm Men's Jacket Solid Slim 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.

Dark Padded Womens Hiking ZhuiKun Body Vest Pink2 Warmers Lightweight Gilet 865UBUxqw

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.

Sleeve Solid Outwear Jacket Down Long AngelSpace Red Warm Men's Slim Quilted



Down Long Quilted Men's Outwear Red Slim AngelSpace Jacket Warm Sleeve Solid
Hiking Padded ZhuiKun Khaki Lightweight Womens Warmers Body Vest Gilet B5xXfT


Men's Quilted Sleeve Solid AngelSpace Down Slim Long Warm Jacket Outwear Red 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.
Red Down Warm Slim Long Outwear Solid Jacket Quilted AngelSpace Sleeve Men's


Womens ZhuiKun Lightweight Padded Body Vest Orange Gilet Hiking Warmers daravnqA Collar Down 4 Coat Ultralight EKU Stand Women's Jacket Puffer Packable xvcqS4SwFY