The Ryugu asteroid contains the grain of matter that was formed before the birth of the Sun, in the atmospheres of dying stars, and these sunflowers were found in samples delivered to the Earth by the Hayabusa-2 probe.
In 1950, Ervin Schroedinger, one of the founders of quantum mechanics, who worked both on the nature of life and on the emergence of matter in a model of relativist cosmology, explained in one of his four public lectures entitled "science as a component of humanism", that "the isolated knowledge acquired by a group of specialists in a narrow field is in itself of no value; it is valuable only in a synthesis that combines it with all other knowledge, and only to the extent that it actually contributes to the synthesis of the answer to the question: Who are we?"
We are indeed searching for our roots and space identity through space missions, such as the Japanese Hayabusa-2 probe, which was in orbit around the Ryugu asteroid from June 2018 to November 2019, and has collected samples from it that have already arrived on Earth and are still being analysed.
It's part of the near-Earth asteroid family of Apollo, and it's even one of the potentially dangerous things that was discovered in 1999, and it quickly became clear that it's a C-type asteroid, similar to the known carbon hondrite meteorites on Earth.
Therefore, their chemical composition is close to that of the dusty molecular cloud, in which the early solar system was born, without light and volatile elements such as ice, so it is the primary purpose of understanding the origin of the planets and the sun and, therefore, the origin of the biosphere and noosphere, so Hayabusa 2 has provided us with much more than pictures of the Ryugu asteroid as a major plan.
The Team of Specialists reports that in the samples brought by Hayabusa 2 they found nothing other than sunflower grains.
These are solid materials that were condensed into grain not in the protoplane disc of gas and dust that cools around the young sun about 4.5 to 4.6 billion years ago, and even before the sun was born, in the stars that existed before it, from which they were thrown at the end of their lives into the interstellar environment and then into the protosolar nebula of the solar system.
It should be remembered that in the Milky Way galaxy there is a real star cycle that forces it to evolve chemically with the increasing enrichment of the interstellar environment by heavy elements, in which cold, dense, dusty molecular clouds are destroyed gravitationally by pressure, or by waves of density in our galaxy's sleeves, or by the shock wave of a supernova explosion.
As the clouds collapse into star crèches, some of which quickly evolve into supernovas, injecting new heavy elements into a cloud where star formation continues. It is believed that the explosion of one of these stars, called Coatlikue, caused the collapse of the protosolar cloud in which our sun was born. In more general cases, stars at the end of their lives return the material that formed them to the interstellar environment, but with new elements in which new stars are born for the same reasons.
This is what makes Jens Barosh claim that, in the case of finding the Ryugu sample, "various types of sunflowers come from different types of stars and star processes that we can identify from their isotopic signatures." The ability to identify and explore these grains in the lab can help us understand the astrophysical phenomena that have formed our solar system, as well as other space objects.
Cosmochemists can use sophisticated microanalytic instruments to measure the abundance of various isotopic kernels of a component differing in the number of neutrons and compare them to those measured in carbon hoods falling to Earth.
Larry Nittler explains in a press release of the Carnegie Science Institute that "".