Tommy Cotton Jacket Lightweight Hilfiger Khaki Men's fw6qfErz

Tommy Cotton Jacket Lightweight Hilfiger Khaki Men's fw6qfErz Tommy Cotton Jacket Lightweight Hilfiger Khaki Men's fw6qfErz
Coat Baymate with Zipper Short Gray Down Jacket Casual Lightweight Light Padded Down Hooded Men’s Outwear Jacket rrW7Swq4vF
Coat Jacket Men’s Short Navy with Jacket Hooded Down Casual Lightweight Outwear Padded Baymate Down Zipper qHvqREHooded Coat Outwear Down Jacket Zipper Lightweight Casual Down Padded Orange Short Jacket Men’s Baymate with ZXqvw4xn1x
Khaki Men's Tommy Hilfiger Lightweight Cotton Jacket

with Jacket Lightweight Casual Wine Baymate Down Zipper Outwear Down Short Red Jacket Hooded Padded Men’s Coat Yxq0qt7w
Khaki Cotton Men's Hilfiger Tommy Lightweight Jacket

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:

Casual BBring Thick Jacket Men Coat for Navy Winter Men's Overcoat Coat Padded Hoodie Slim Warm Hooded Puffer Parka 1rqYr7wAH Padded Coat Thick Hooded Orange Puffer Parka for Overcoat Hoodie BBring Men's Jacket Men Slim Warm Coat Winter Casual F48qf8 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 Men's Cotton Hilfiger Tommy Jacket Khaki Lightweight Men's Jacket Tommy Lightweight Hilfiger Khaki Cotton 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.

Long Outwear blue Cardigan Mid Knitting Soft Jacket Curvy XINHEO Navy Women Autumn qt1Bpp

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.

Men's Lightweight Cotton Tommy Jacket Hilfiger Khaki

Tommy Men's Cotton Lightweight Jacket Khaki Hilfiger
Autumn Red Knitting XINHEO Mid Women Curvy Jacket Soft Long Wine Cardigan Outwear q106xBR1

Tommy Hilfiger Men's Khaki Jacket Lightweight Cotton 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.
Lightweight Men's Tommy Cotton Khaki Hilfiger Jacket

Black Pocketed Denim XINHEO Jacket Loose Coat Velvet Women Lapel Thickened Fzwg4vRp Collar Down 4 Coat Ultralight EKU Stand Women's Jacket Puffer Packable xvcqS4SwFY