Hopi Blue Star or Blue Kachina Prophecy
An ancient Hopi Indian prophecy states, "When the Blue Star Kachina makes its appearance in the heavens, the Fifth World will emerge". This will be the Day of Purification. The Hopi name for the star Sirius is Blue Star Kachina. It will come when the Saquasohuh (Blue Star) Kachina dances in the plaza and removes his mask.

"To see this change is very striking," said Charles Townes, a UC Berkeley professor emeritus of physics who won the 1964 Nobel Prize in Physics for inventing the laser and the maser, a microwave laser. "We will be watching it carefully over the next few years to see if it will keep contracting or will go back up in size."

"But we do not know why the star is shrinking," Wishnow said. "Considering all that we know about galaxies and the distant universe, there are still lots of things we don't know about stars, including what happens as red giants near the ends of their lives."

Originally posted by InTrueFiction

... but Richard Hoagland knows so much about Betelgeuse's supernova and with such certainty that he can tell you what the magnite, direction, duration, composition and consequences on Earth would be?

A supernova (plural: supernovae) is a stellar
Astronomy

Astronomy is the science of Astronomical object and Phenomenon that originate outside the Earth's atmosphere . It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the physical cosmology....
explosion
Explosion

An explosion is a sudden increase in volume and release of energy in an extreme manner, usually with the generation of high temperatures and the release of gases....
. Supernovae are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy
Galaxy

A galaxy is a massive, gravitation system that consists of stars and stellar remnants, an interstellar medium of gas and cosmic dust, and an important but poorly-understood component tentatively dubbed dark matter....
, before fading from view over several weeks or months. During this short interval, a supernova can radiate
Radiation

In physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body....
as much energy
Energy

In physics, energy is a scalar physical quantity that describes the amount of Work_ that can be performed by a force. Energy is an attribute of objects and systems that is subject to a conservation law....
as the Sun
Sun

The Sun , a G V star, is the star at the center of the Solar System. The Earth and other matter orbit the Sun, which by itself accounts for about 98.6% of the Solar System's mass....
could emit over its life span. The explosion expels much or all of a star's material at a velocity of up to a tenth the speed of light
Speed of light

The speed of light in an free space is an important physical constant usually written as c, with a value of 299,792,458 metres per second....
, driving a shock wave
Shock wave

A shock wave is a type of propagating disturbance. Like an ordinary wave, it carries energy and can propagate through a medium or in some cases in the absence of a material medium, through a field such as the electromagnetic field....
into the surrounding interstellar medium
Interstellar medium

In astronomy, the interstellar medium is the gas and cosmic dust that pervade interstellar space: the matter that exists between the stars within a galaxy....
. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant
Supernova remnant

A supernova remnant is the structure resulting from the gigantic explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way....

Originally posted by MischeviousElf

Direction is meaninless the explosion like a nuke is liberated outwards from the point of event pretty uniformly in all directions.