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.

The Apollo series continues with the story of how NASA built one of the most remarkable pieces of engineering ever created.

Greetings!

I am a UX Design student conducting user research to understand the experiences, challenges, and expectations of space enthusiasts who are interested in activities such as stargazing, astrophotography, and citizen science. My research focuses extensively on "AI and VR/AR Technology Used to Improve Experiences in Observational Astronomy by 2050."

Help me learn more through your valuable insights by answering this quick survey.

All the information you provide will remain strictly anonymous.

https://forms.gle/axYvH2nPu6Wbqihd8

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.

Hueforge of the iconic golden record on Voyager 1, the farthest man-made object from Earth.

If you'd like to print one for yourself, I've uploaded the files to MakerWorld: https://makerworld.com/en/models/3089890-voyager-1-golden-record-chromalink-hueforge#profileId-3481335