Cosmology question about cosmic disasters and related things?

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When is the soonest each of these might occur and the probability of them occurring at that time?
Gamma ray burst from the sun
Black hole heading for earth
Sun turning into a white dwarf
Super volcanic eruption
Jupiter's great white spot going away
Meteor hitting earth
Pangaea Ultima forming
 
Jupiter does have a white spot as well as the Red Spot. The current white spot formed when two smaller white spots merged together several years ago. It took 10 years or so for the white spots to develop and then merge together.

Australia and Antarctica still will not be part of a future Pangaea 250 million years from now.

http://www.scotese.com/future.htm
http://www.scotese.com/future1.htm
http://www.scotese.com/future2.htm

The abysmal science literacy levels of the general public in the United States has been well known and recognized for decades. What bothers me more is that many current science teachers may have little or no education in science themselves. I hope that has improved at least a little in the last 15 years.
 
GRB from the sun - never (the sun isn't massive enough).

Black hole heading for Earth - 1600 years assuming that the nearest black hole that is 1600 light years away suddenly starting moving in our direction (which it isn't right now) at the speed of light (which it can't).

Sun turning into a white dwarf - 100% chance, but not for another 5 billion years or so.

Super volcanic eruption - could occur tomorrow, next year, or a thousand years from now.

Jupiter's Great Red Spot (it may look white sometimes but its called a Red Spot) - unknown, as it has been observed for 300 years and could be a permanent feature on Jupiter.

Meteor hitting Earth - 100% chance that will occur every day.

Pangaea Ultima forming - at the current rate of plate movement, it would be within 250 million years.
 
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