Researchers found all five bases of DNA and RNA in samples from the asteroid Ryugu.

“A coloured view of 162173 Ryugu taken by JAXA’s space probe Hayabusa2 in 2018. Credit: JAXA/Hayabusa2 (ScitechDaily, Scientists Just Found All 5 Genetic “Letters” of DNA and RNA on an Asteroid)

"162173 Ryugu (provisional designation 1999 JU3) is a near-Earth object and also a potentially hazardous asteroid of the Apollo group. It measures approximately 900 metres (3,000 ft) in diameter and is a dark object of the rare spectral type Cb, with qualities of both a C-type asteroid and a B-type asteroid. In June 2018, the Japanese spacecraft Hayabusa2 arrived at the asteroid. After making measurements and taking samples, Hayabusa2 left Ryugu for Earth in November 2019 and returned the sample capsule. To Earth. On 5 December 2020. The samples. Showed the presence of organic compounds, such as uracil (one of the four components in RNA) and vitamin B3." (Wikipedia, 162173 Ryugu)

This thing supports the model. Those life-building blocks are coming from space. And they formed DNA and RNA molecules in the Earth's chemical environment. Those bases, or letters on the asteroid Ryugu (162173 Ryugu), cause interesting thoughts. About things like. Could there have been some other habitable planet in our solar system’s past? 

There is suspicion that Mars has a habitable past. But could there be some ancient? A habitable planet that was destroyed in violent impacts?  The hypothetical protoplanet Theia formed the Moon when it impacted Earth. Nobody can prove the existence of that thing. Because Theia was destroyed in that impact. 

The meteorite that reseachers found in the Sahara. Tells about the ancient planet. That was destroyed in the young solar system. The craters on icy moons remind us. About. The chaotic past. In the solar system. Those icy worlds hide evidence. Of violent impacts. The fact is that those base pairs are things. 

That can form the impacts of the planets. Or protoplanets. The origin of Ruygu could be another asteroid. The best candidates are 495 Eulalia. And 142 Polana. But the induction question is: what is the origin of the 495 Eulalia and 142 Polana?  Have they been part of some larger mass? And do those two distant asteroids in Jupiter's trajectory also carry those DNA and RNA building blocks? 

“How the five nucleobases make up RNA and DNA. Credit: Wikimedia Commons” (ScitechDaily, Scientists Just Found All 5 Genetic “Letters” of DNA and RNA on an Asteroid)

“In the Tholen classification scheme, Polana is a primitive carbonaceous asteroid of type F, which is a subdivision of the more common C-type. Under the SMASS classification taxonomy, Polana is listed as a B-type asteroid, a group that combines both the Tholen B and F types. The spectrum of this object suggests the presence of magnetite (Fe3O4), which gives it the spectrally blue coloration that is a characteristic of this SMASS class” (Wikipedia, 142 Polana) 

(Wikipedia, 162173 Ryugu)

“495 Eulalia is a minor planet, specifically an asteroid orbiting in the asteroid belt. Eulalia is very near the 3:1 Jupiter orbital resonance. It is possible that the disruption of Eulalia's parent body resulted in a mass bombardment of the Earth and Moon 800 million years ago, forming the Copernicus crater on the Moon and involving about 50 times. The amount of material of the Chicxulub impact on Earth at the beginning of the Cryogenian geological period. (Wikipedia, 496 Eulalia)

“Microscope images of Ryugu samples collected from the first and second touchdown sites of the Hayabusa2 mission. Credit: JAXA/JAMSTEC” (ScitechDaily, Scientists Just Found All 5 Genetic “Letters” of DNA and RNA on an Asteroid)

“Ryugu sample in its return capsule. Credit: JAXA”(ScitechDaily, Scientists Just Found All 5 Genetic “Letters” of DNA and RNA on an Asteroid)

The relation of the gravity. Between Jupiter and the inner solar system, objects could rip Ryugy away from the asteroid's main body. 

The shape of Ryugu is interesting. It looks a little bit like a cube. At least from the angle. There, the photo is taken. This is one of the things that makes these kinds of objects interesting. They can store the ancient genetic building blocks. And in the most exciting model, the Ryugu is part of the ancient planet or protoplanet. 

Some kind of protoplanet impacted Earth.  A long time ago. And that impact caused the Moon to separate from Earth. The DNA and RNA building blocks from the asteroid are always interesting things. There is also a small possibility that those building blocks of RNA and DNA are also coming from Earth. This thing can support ideas.  Maybe Earth can deliver some kind of lifeforms to Venus. Those lifeforms could be like the Anthrax bacteria. 

That could take the spore form. And maybe some of those bacteria can stay alive. And flow in Venus’s clouds. In some other models. Tiny viruses from ancient planets could travel between stars. Those genome packs could keep their form in absolute zero degrees Kelvin. 

Maybe. The supernova, or nova explosion. Or some impact could destroy the entire star. And throw those genomes around the universe. But nobody is sure. About the origin of that genetic material, before more samples are collected from the asteroid belt. The interesting information. It  could be. Is there more genetic information frozen in asteroids? Than just those bases that the reseachers found from Ruygu samples. But if Ryugu is the only asteroid that carries these DNA and RNA building blocks. That is also an interesting possibility. 

https://knowridge.com/2026/06/rare-sahara-meteorite-uncovers-a-hidden-planet-from-the-early-solar-system/

https://scitechdaily.com/scientists-just-found-all-5-genetic-letters-of-dna-and-rna-on-an-asteroid/

https://en.wikipedia.org/wiki/142_Polana

https://en.wikipedia.org/wiki/162173_Ryugu

https://en.wikipedia.org/wiki/495_Eulalia

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

https://en.wikipedia.org/wiki/Theia_(hypothetical_planet)

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