A black dwarf cycle

The Bible states that the sun will be darkned this cycle of the sun was called the black dwarf cycle that sun no longer emits significant heat or light :

👉 In Matthew 24:29 “Immediately after the distress of those days “‘the sun will be darkened…”

A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently that it no longer emits significant heat or light.

👉 In Acts 2:20 “The sun will be turned to darkness…”

👉 In Joel 2:31 “The sun will be turned to darkness…”

The ultimate stage of stellar evolution for many stars is a black dwarf. Because they emit no heat or light, these objects would be a challenge to detect if they existed today. However, black dwarfs take quadrillions of years to form. At less than 14 billion years old, the universe is still too young to have created any black dwarfs.

A main sequence star that lacks the mass necessary to explode in a supernova will become a white dwarf, a ‘dead’ star that has burned through all of its hydrogen and helium fuel. But the white dwarf remains hot for some time, much like a stove burner still emits heat even when it has been turned off.

After an extremely long time, all of the leftover heat will have radiated away. No longer emitting heat or light, the white dwarf will become a black dwarf. Because it emits no radiation, it is nearly impossible to see. However, the black dwarf would still retain its mass, allowing scientists to detect the effects produced by its gravitational field.

But there’s no need to start searching for the elusive black dwarfs yet. At the moment, they’re strictly theoretical. Scientists have calculated that a white dwarf will take at least a hundred million billion years to cool down and become a black dwarf, according to astronomer Ethan Siegel.

In Matthew 24:29 ” Immediately after the anguish of those days, the sun will be darkened, the moon will give no light,…”

After the Black dwarf cycle of the sun the moon will not shine.

Because the light of the moon is only a reflection of the sun light .The moon shines because its surface reflects light from the sun.