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Since that was a supernova explosion, that would most likely produce all elements that occur naturally, except hydrogen (element #1).

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Depending on the mass of the original star, it is either a black hole or a neutron star.

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The one that is next observed.

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By accretion of hydrogen from a nearby star which ignites and starts nuclear fusion in a runaway manner. The explosion is only on the surface of the white dwarf - this is a nova [See related question]

If however, it accretes enough hydrogen to push it's mass over the Chandrasekhar limit [See related link] of about 1.38 solar masses, the whole white dwarf will explode as a supernova type Ia [See related link]

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A hypernova [See related question]

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The rapid collapse of the star compresses atoms together and may cause nuclear fusion and make heavier elements.

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A pulsar is a rapidly spinning neutron star, the collapsed core of a nova explosion, while a white dwarf is the remains of a small star whose fuel is about used up. A pulsar or neutron star is far more dense than a white dwarf.

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No, some leave a black hole instead of a neutron star.

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The Sun is an averaged size star so it doesn't have enough mass to explode. Instead it reheats and expands into a red giant, so earth will be vaporized within the sun! Oh yeah and don't freak out, it's not going to happen within 5 billion years. Plenty of time to get that degree and a good job, and to raise a family. In four billion years 4,000,000,000 Roughly 4-5 billion years but the Sun will not go dark for roughly 20-30 billion years.

Although the Sun will continue to shine for billions of years Earth will be uninhabitable in roughly 1 billion years this is because as the Sun ages it gets hotter and brighter and in about 1 billion years the temp on Earth will be too hot for liquid water to exist on the surface.

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If the Sun was replaced by Orion's star Betelgeuse , its size would completely engulf the earth. Also it would extend past the orbit of Jupiter, and most of the planets would be inside the star including Jupiter. Betelgeuse would outshine the Sun like our Sun outshines the Moon. Unfortunately the Earth would have a "Front Row Seat" when the Red SuperGiant blows itself into oblivion. The explosion would be so bright that the star in Orion (constellation) which is 640 Light Years away. Days would still change from day into night, but for a few weeks or so it would appear like there are two Suns in the sky.

this is what would happen when Betelgeuse explodes :)

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The Orion nebula was likely caused by a supernova. It is a huge cloud of gas within which hundreds of new stars are being formed.

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S-U-P-E-R-N-O-V-A

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Xibalba is the name of the Mayan underworld ... essentially the equivalent of the Greek Hades (the place, not the god). Also, the Mayans appear to have regarded a dark rift in the Orion Constellation as being the road to Xibalba. On Ganymede, one of Jupiter's moons, there is a feature (a sulcus, which is basically a kind of ditch) named after it; that's the only modern non-fictional astronomical reference to it that I know of The nebula in the movie, The Fountain, is referred to as Xibalba, which the Mayans believed to be the Orion Nebula. There is no star or nebula technically referred to as Xibalba, but as you can see throughout the movie, it is shown to be within the constellation Orion and specifically the location of the Orion Nebula. According to Wikipedia: "The Maya of Central America had a folk tale which dealt with Orion's part of the sky, known as Xibalba. Their traditional hearths included in their middle a smudge of glowing fire that corresponded with the Orion nebula. This is clear pre-telescope evidence that the Maya detected a diffuse area of the sky contrary to the pin points of stars."

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1. Power off the Nova by holding the power button for two seconds until you see "Power Off" on the screen. Choose the "power off" option and then press the "Ok" button. Let the device completely power down before you continue with the next steps. At this time also remove any SD card you might have inserted into the device.

2. Press and hold the volume + button. While still holding this button, press down on the power button. You will then see a screen that says Pandigital. This is the boot screen.

3. After the device boots up you will go to a black screen with triangle, press volume + button and the power button. What should come up is a screen with blue text, this is the system recovery screen. While on the system recovery screen, press the volume - button until "wipe data and cache" is highlighted. Press the power button to select this option

4. Press the volume - button until "Yes -- delete all user data" is highlighted. Press the power button to select this option.

5. The device will reformat and return to the system recovery screen.

6. "Reboot system now" should be highlighted by default. Press the power button to select this option. (this is directly from pandigital customer service)

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It didn't. It occurred approximately 168,000 years before 1987.

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slow cooling. it can't ignite fusion.

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Red Dwarfs have surface temperatures ranging from about 2300 K up to maybe 4000 K.

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A few elements past iron can form in the star by neutron capture and beta decay. However the majority can only be formed by the blast shockwave of a supernova, which can form elements significantly beyond Uranium.

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A supernova.

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The brightest star is the Sun. See related question.

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A nebula is a large cloud of gas in space, a planetary nebula is the large cloud of expanding superheated gas caused by the explosion of a red giant or other very large, very hot star.

Neither have anything to do with planets.

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