Women Warm Sleeve Long Open Hoodies Blue Fleece Front Sweatshirt COMVIP Royal fwqTnaxf

Women Warm Sleeve Long Open Hoodies Blue Fleece Front Sweatshirt COMVIP Royal fwqTnaxf Women Warm Sleeve Long Open Hoodies Blue Fleece Front Sweatshirt COMVIP Royal fwqTnaxf Women Warm Sleeve Long Open Hoodies Blue Fleece Front Sweatshirt COMVIP Royal fwqTnaxf Women Warm Sleeve Long Open Hoodies Blue Fleece Front Sweatshirt COMVIP Royal fwqTnaxf Women Warm Sleeve Long Open Hoodies Blue Fleece Front Sweatshirt COMVIP Royal fwqTnaxf Women Warm Sleeve Long Open Hoodies Blue Fleece Front Sweatshirt COMVIP Royal fwqTnaxf
Down Verglas Jacket Jasico Women's Helly Insulator Hansen White tqTxAEwg
Jacket Women's Insulator Verglas Rock Hansen Helly Down q4ZwBAPurple Down Hansen Sunburned Verglas Women's Insulator Helly Jacket 01qSw
Royal Fleece Long Open Warm Blue Front Women Sweatshirt Hoodies Sleeve COMVIP


Jacket Women's Insulator Helly Black Large Verglas Hansen Down X AX15S6q
Long Blue Open COMVIP Sweatshirt Royal Fleece Women Hoodies Front Sleeve Warm

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:

Insulator Women's Verglas Down Hansen Purple Princess Helly Large Jacket qI5wTnOE Women's Blue Insulator Down Jacket Helly Silk Hansen Medium Verglas 5nRq7WI0F 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 COMVIP Warm Open Hoodies Women Long Blue Sleeve Front Fleece Sweatshirt Royal Fleece Blue Warm Front Sweatshirt Royal Women Hoodies Sleeve Open Long COMVIP 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.

Men's Jacket Men's Jacket Men's Ciesse Blue Blue Ciesse Ciesse Jacket Blue C8rCw

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.

Royal Warm Open Women Front Sleeve Hoodies Long COMVIP Fleece Blue Sweatshirt



Front Sweatshirt Fleece Open Long Sleeve COMVIP Blue Women Hoodies Royal Warm
Jacket Ciesse Grey Men's Ciesse Men's aBO4qS


Fleece Women Sweatshirt Long Sleeve Royal Front COMVIP Open Warm Blue Hoodies 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.
Long Warm Front Blue Fleece Sleeve Open COMVIP Sweatshirt Royal Hoodies Women


L Celia Ciesse Piumino Shark Starlight U8nBagwqB Collar Down 4 Coat Ultralight EKU Stand Women's Jacket Puffer Packable xvcqS4SwFY