Astronomers from the University of Warwick in the United Kingdom discovered that the Earth was also involved in their research. The oldest star in the Milky Way galaxy and they discovered the solar system to which it belongs.

This oldest star discovered by astronomers falls into the “white dwarf” category and is located 90 light-years from Earth. The solar system, including the icy asteroids and planets orbiting it, is more than 10 billion years old according to initial calculations!

These stars are called white dwarfs, but their colors vary depending on the materials they have:

Illustration of 2 discovered stars. Source: @Warwick University, Dr Mark Garlick

Astronomers from the University of Warwick, first discovered by the European Space Agency’s GAIA Observatory. 2 ‘white dwarf’ stars they modeled. Both stars turned out to be surrounded by planetary debris. One star was seen to be unusually blue and the other the faintest and reddest color ever seen in the Milky Way (white dwarf stars can vary in color, we’ll explain that later).

WDJ2147-4035 Researchers focusing on the red star registered with the code; They found that the star is 10.7 billion years old and spends 10.2 billion years of it as a cooling white dwarf. Also the star rich in sodium, potassium and lithium materials was also noted.

WDJ1922+0233 the other blue star, registered with the code, is slightly younger than the red one; the blue color, on which there are continental crusts like on Earth, because of the waste materials around it. atmosphere containing a helium-hydrogen mixture. (Yes, stars also have atmospheres and they are also called gasospheres because they are mostly made up of dense gases).

The study’s lead author, Abigail Elms, told Psys.org: “It’s unlike anything known in our own solar system.”

“We have found the oldest remnants of stars that were ever contaminated by Earth-like planets in the Milky Way galaxy. It’s really surprising to learn that this happened over a period of 10 billion years and that these planets died long before the Earth was formed.”

“The white dwarf planet in red is unlike anything known in our own solar system, as its planetary remnants are rich in lithium and potassium. This white dwarf planet is very interesting, because the very low surface temperature, the metals that contaminate it, the very old age and the magnetics last a long time.” makes it extremely rare.”

What is a “white dwarf star”?

According to astronomers, many stars, including our sun, are destined to one day turn into a ‘white dwarf’. Stars, expending all their energy and losing their outer layers, shrink over time and go into a cooling process. In this process, they change into a smaller shape and often turn white due to their fading of color. However, the substances they have during this cooling allow them to form into different colors, just like an iron turns red when it rusts.

What do you think? Please don’t forget to share your thoughts with us in the comments.