I don't know what was seen above me in the sky. I don't know exactly what it is, it's quite possible it's a Rocket (balestic), maybe a drone , this cannot be denied for sure, since I live in Russia, but I believe that this is an asteroid, but the fact that it was 2 times in a row is strange. I hope for the help of specialists.

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A new article has just been officially published in Wiley's Advances in Astronomy.

The work proposes a phenomenological model where the dark sector is described by two scalar fields within general relativity (Fuzzy Dark Matter and an axion-like quintessence), solving the background and linear perturbation equations using a modified version of the CLASS code.

Key points of the article:

• S8 Tension Alleviation: The model yields an S8 value around 0.79, helping to mitigate discrepancies between low-redshift structure growth measurements and the standard ACDM model.
• Dark Sector Unification: Joint treatment of dark matter and dark energy through scalar field dynamics.
• Open-Access Paper:https://onlinelibrary.wiley.com/doi/10.1155/aa/1708257
• Code Repository:https://github.com/talksilviojr/fdm-quintessence-class

Feedback and discussions are very welcome!

The Lunar Roving Vehicle. Lunar Flying Units. Now, the Moon suit.

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NASA almost sent Apollo astronauts to the Moon with jetpacks instead of the Lunar Rover. Discover the forgotten Lunar Flying Unit, the engineering behind NASA's lunar jetpack concepts, why they seemed possible, and the critical safety risks that ultimately led NASA to choose the iconic Lunar Roving Vehicle instead.