Supernova
Violent explosion of a star. The star is destroyed, with a remnant forming a neutron star (pulsar) or black hole (collapsar) depending on the residual mass. There are generally two forms of supernova. One results at the end of the life of a star with at least about eight solar masses, which in a series of progressively shorter-lived and less efficient thermonuclear reactions generates ever heavier chemical elements in layers about the core. Effectively this is a star that lives fast and dies young. When each step in the process chokes up the core with nuclear "ash", contractions follow under gravity, driving up temperatures until they are sufficient to synthesise the next heavy element from this waste product. When the core fills with iron, the end point is reached; it takes more energy to fuse iron into anything heavier than the fusion reaction produces. At this point the star collapses, driving temperatures into perhaps twelve figures Kelvin and triggering an explosion that blows most of the star to smithereens. A second type occurs in close orbiting binary systems where one star A, being more massive, evolves more quickly to the red giant phase and develops a thin outer envelope and a core rich in carbon. Its companion B skims off the outer layer, grows in mass and itself evolves to the red giant stage. At this point the carbon-rich star A begins reclaiming the hydrogen; when the gas accreting onto it drives its mass over 1.4 solar masses a huge nuclear reaction ensues and A blows itself apart. Supernova explosions can briefly outshine the combined output of all the stars in at least a modest galaxy. They are also responsible for seeding the Universe with the heavy chemical elements of which the Earth and our very bodies are made.
The Urban Dictionary Mug
its an incredible mug! i would recommend purchasing this awesome product!
Damonism and #Stolen Valor Coffee Mug These coffee mugs are rugged, solid, high quality and keep the liquids hotter, longer. The definitions of both mugs are spot-on! I will definitely by more. Great work Urban Dictionary!
why is this a real thing? AND YA'LL ACTING LIKE IT'S NORMAL!?
I really like the mug, but I thought I had ordered the all pink one. What came was a white with a block of pink with "Fubar" written on it.
the only reason why i care about humanity this mug is the reason why i believe humanity deserves a second chance, even after they blaspheme my name. this mug is the greatest thing i've ever seen and i have ordered many of them. this mug replaces the holy grail. the bible should've told about the wonderful deeds of the mug and how it saved humanity from my wrath. alas, whilst the laws keep me from tampering with human minds and altering holy objects like the bible, i can only pass on my message: "spread the news and buy this mug!"
Its.. omg, its............. AMAZING AMAZING OMG ITS SOOO GOOD
A mug for your boyfriend Paul????? My boyfriend is not called Paul. I don't even have a boyfriend
Great mug... finally got my ""your mom gay lol" mug, I'm so happy
ariana grande mug omg this slays mah life
It was easy to correct grammar when necessary, and then to order a great gift for a member of a wedding party. Nice, simple, and sturdy mug.
with this we regain gods trust This mug changes my views of humanity. I think we may have a chance of not going extinct. Everyone should own this fantastic mug. Oh it's also has a nice handle.
Love that I got an Urban Dictionary word definition from someone I know! So much fun and great memory item!! 😊
I like it but it took a long time getting here
Very basic mug but does the trick!
The mug is of good quality but advertisement needs to change as the sample photo for ordering gives the customer an illusion that the entire mug is of that color ordered when it is not
muffinism mug very bold mug i love it u should buy one
Oof oof this mug gives me life every single day. i have no other reason to wake up in the morning. also this website is the only thing that's ever loved me.
The fact you guys make custom mugs is the most hilarious yet smartest thing ever, thank you so much I'm definitely gonna collect these and chuckle at the crazy words/terms only I will understand the depth of! 😂
Nice, but I need the “Reservation Dogs” version of “Aho!”
The mug is a gift for our Fantasy Football league winner…or loser. I'm not sure yet; it's a bit of a spoof that will be disclosed on Thanksgiving.
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