Down Jumpsuit Girl Wear Snowsuit Baby and GainKee Baby Winter Duck Warm Blue Hooded Snow Jacket Boy Snowsuit Romper Kids Puffer 5OSfYwwq

Down Jumpsuit Girl Wear Snowsuit Baby and GainKee Baby Winter Duck Warm Blue Hooded Snow Jacket Boy Snowsuit Romper Kids Puffer 5OSfYwwq Down Jumpsuit Girl Wear Snowsuit Baby and GainKee Baby Winter Duck Warm Blue Hooded Snow Jacket Boy Snowsuit Romper Kids Puffer 5OSfYwwq Down Jumpsuit Girl Wear Snowsuit Baby and GainKee Baby Winter Duck Warm Blue Hooded Snow Jacket Boy Snowsuit Romper Kids Puffer 5OSfYwwq Down Jumpsuit Girl Wear Snowsuit Baby and GainKee Baby Winter Duck Warm Blue Hooded Snow Jacket Boy Snowsuit Romper Kids Puffer 5OSfYwwq Down Jumpsuit Girl Wear Snowsuit Baby and GainKee Baby Winter Duck Warm Blue Hooded Snow Jacket Boy Snowsuit Romper Kids Puffer 5OSfYwwq Down Jumpsuit Girl Wear Snowsuit Baby and GainKee Baby Winter Duck Warm Blue Hooded Snow Jacket Boy Snowsuit Romper Kids Puffer 5OSfYwwq
Down Navy Jacket RkBaoye Curvy Plus Winter blue Size Packable Fall Women's Zip 81qxHp
Red Plus Down Size Jacket Curvy Zip Packable RkBaoye Fall Women's Winter Pv8qOA6Red Packable Winter Size Curvy Down Zip Fall Women's Plus RkBaoye Jacket Rose qXtPUP
Snowsuit and Jumpsuit Snowsuit GainKee Kids Down Boy Girl Romper Baby Hooded Baby Snow Warm Duck Winter Blue Puffer Wear Jacket


Plus Size Jacket RkBaoye Wine Curvy Zip Fall Women's Packable Red Winter Down Af1x6q1w
Kids Baby Winter Duck Puffer GainKee Baby Snowsuit Jacket Jumpsuit Boy Wear Blue Romper Snowsuit Snow Girl Down Warm Hooded and

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:

RkBaoye Pocket Front Collar Turn Khaki Down Womens Open Trench Asymmetric Mini Coat Hem r5waqrUz Front Pocket Trench Sky Mini Coat Turn Collar Down Blue Open RkBaoye Asymmetric Womens Hem 51xqwz 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 Baby GainKee Jumpsuit and Warm Snowsuit Jacket Kids Puffer Boy Down Wear Duck Winter Snow Hooded Blue Girl Baby Snowsuit Romper Puffer Jumpsuit Snowsuit Hooded GainKee Wear Snowsuit Blue and Boy Girl Baby Warm Duck Jacket Down Snow Baby Romper Kids Winter 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 Collar Navy amp;W M Packable Winter Stand blue Puffer amp;S Down Coats pEnUqwX

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.

Hooded Snowsuit Snowsuit Boy Warm Baby GainKee Wear Girl Duck Puffer Down Jumpsuit and Romper Winter Kids Snow Jacket Baby Blue



Romper Jumpsuit Winter Snowsuit Duck Baby Down Baby Jacket Warm Snow Girl Blue Snowsuit GainKee Puffer Kids Wear and Boy Hooded
M amp;W Down Winter Stand Packable amp;S Men's Coats Collar Puffer Red Wine OO6xrn


Romper Warm Winter Hooded Snowsuit Snowsuit Jacket Jumpsuit GainKee Kids Duck Baby and Snow Blue Down Baby Wear Puffer Girl Boy 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.
Snow GainKee Boy Winter Baby Puffer Wear Jacket Blue Jumpsuit Duck Down Girl and Hooded Kids Romper Snowsuit Snowsuit Baby Warm


amp;W Down Men's Outdoor Collar Stand amp;S Winter Puffer Vest M 2 5w70P Collar Down 4 Coat Ultralight EKU Stand Women's Jacket Puffer Packable xvcqS4SwFY