Remnants of 10 billion years old Earth discovered in white dwarf's atmosphere.

"Artist’s impression of the old white dwarfs WDJ2147-4035 and WDJ1922+0233 surrounded by orbiting planetary debris, which will accrete onto the stars and pollute their atmospheres. WDJ2147-4035 is extremely red and dim, while WDJ1922+0233 is unusually blue. Credit: University of Warwick/Dr. Mark Garlick" (ScitechDaily/Astronomers Discover Oldest Planetary Debris in Our Galaxy – Remnants of Destroyed Solar System")

In space is a binary star system of two white dwarfs WDJ2147-4035 and WDJ1922+0233. The age of WDJ2147-4035 is about 10,7 billion years old and it spent the 10,2 billion years cooling as a white dwarf. WDJ1922+0233 is much younger.

And it's almost sure. That those white dwarfs impacted each other. Then they started to orbit each other. So those white dwarfs have been separated a long time ago.

An interesting thing is that white dwarfs are remnants of the stars, quite similar to the sun. If the red participant of the binary star WDJ2147-4035 was really like our sun, it spent an incredibly short period of its life as the star that has nuclear fusions and its energy production. That means WDJ2147-4035 produced energy for only 0,5 billion years.

"The astronomers used spectroscopic and photometric data from GAIA, the Dark Energy Survey, and the X-Shooter instrument at the European Southern Observatory to calculate how long the stars have been cooling. They found that the ‘red’ star WDJ2147-4035 is around 10.7 billion years old, of which 10.2 billion years have been spent cooling as a white dwarf". (ScitechDaily.com/Astronomers Discover Oldest Planetary Debris in Our Galaxy – Remnants of Destroyed Solar System)

The blue participant of that system WDJ1922+0233 pushes debris to the red participant WDJ2147-4035. And that means the atmosphere of that red dwarf is polluted by planetary debris. The thing that makes this necro-planetary system interesting is that both white dwarfs might have an independent planetary system.

The remnants of the earth-like planet in the red dwarf's atmosphere are causing interesting speculations. Necroplanetology means that science research the remnants of exoplanets near dead stars. The most interesting of the star types are white dwarfs because they were once like the sun.

And if there is some kind of civilization in the universe that is more advanced than humans. Remnants of that civilization could be found near white dwarfs. If that hypothetical civilization wants to stay alive after the star erupts as a nova.

They must create an interstellar flight. But in that case, those civilizations would not return. And that means they must make only space arcs. The generations would change in the spacecraft fleet that speed is about 0,1-50% of the speed of light.

Or create giant space stations that would go to the shadows of those planets. In that case, planets could protect giant O'Neill cylinders where those creatures are moving when they cannot stay on their planets.

When we are thinking about that earth-like planet remnant in that white dwarf system that is 90 light years away from Earth there is the possibility that the origin of that planet is somewhere else than in this binary dwarf-star system.

By the way...

What is the difference between nova and supernova? Nova can mean many types of stellar explosions. But one determination for nova is that is the end of the life of the star that is too small for forming neutron stars. So, if the result of the star's last explosion is a white dwarf. We should talk about nova. But from the Wikipedia page about nova, you can read more about that eruption.

https://en.wikipedia.org/wiki/Nova

https://www.sciencealert.com/necroplanetology-the-study-of-planets-dismembered-remains

https://www.sciencealert.com/remnants-of-ancient-earth-like-world-seen-being-eaten-by-a-star

https://scitechdaily.com/astronomers-discover-oldest-planetary-debris-in-our-galaxy-remnants-of-destroyed-solar-system/

https://en.wikipedia.org/wiki/Nova

https://en.wikipedia.org/wiki/White_dwarf

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