NASA’s Curiosity rover has unearthed the largest organic molecules ever detected on Mars—possible fragments of fatty acids—hinting at the tantalizing possibility that prebiotic chemistry on the Red Planet may have been more advanced than previously thought. Found in a sample from Gale Crater’s Ye
🌍 What if Earth was no longer ours? Imagine a reality where alien fungal lifeforms took over the planet, reshaping cities, nature, and even human civilization itself.
👁️ This AI-generated Sci-Fi short film is a mind-bending journey into an alternate Earth—a world overtaken by bioluminescent alien fungi, spore-based civilizations, and an eerie, surreal atmosphere.
🔬 Inspired by nature’s most resilient organisms, this vision of the future combines biology, science fiction, and cosmic horror into one epic cinematic experience!
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Could black holes, which are known as the most destructive forces in the universe, create conditions on nearby planets where life could exist? This is what | Space
Ringworlds are one of science fiction’s most imaginative megastructures, essentially it is a giant ring that serves as a biosphere for an entire civilization or ecosystem at the very least, with the inside surface serving as a habitable world. Or Imagine a ring so enormous that its inner surface area could be equal to literally millions of Earths! The surface is designed to mimic a planetary environment, complete with cities, forests, and oceans. The structure would either orbit around a star or if it is big enough it would encircle the star.
Using centrifugal force, its rotation is thus used to generate artificial gravity, while massive panels or “shadow squares” can be used to regulate light to create a day-night cycles. Obviously, contructing such a megastructure would require materials of super strength, far beyond anything currently known to exist and gathering resources for its construction could involve dismantling entire planets or asteroid belts. Can such things exist in reality? Maybe a higher tier alien civilization could make these, I don’t know, but in science fiction, there are quite a few of them out here & so lets take a look at the Biggest 10 of these ringworlds.
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Dr. Clément Vidal joins John Michael Godier to discuss his new paper on the Spider Stellar Engine, a hypothetical form of stellar propulsion using binary pulsar systems. The conversation explores how such systems could serve as **technosignatures**, the philosophy of post-biological civilizations, and the potential for advanced beings to manipulate entire stars or even create new universes.
Vidal, C. 2024. “The Spider Stellar Engine: A Fully Steerable Extraterrestrial Design?” Journal of the British Interplanetary Society 77 : 156–66. doi:10.59332/jbis-077–05-0156. https://arxiv.org/abs/2411.05038.
Vidal, C. 2019. “Pulsar Positioning System: A Quest for Evidence of Extraterrestrial Engineering.” International Journal of Astrobiology 18 : 213–34. doi:10.1017/S147355041700043X. https://arxiv.org/abs/1704.03316.
Delahaye, J. P., and C. Vidal. 2018. “Organized Complexity: Is Big History a Big Computation?” American Philosophical Association Newsletter on Philosophy and Computers 17 : 49–54. http://arxiv.org/abs/1609.07111.
#EventHorizon #SETI #Technosignatures #Astrophysics #StellarEngines #FermiParadox #ExtraterrestrialLife #Pulsars #SpaceExploration #PhilosophyOfScience #cosmology.
This video takes a look at how future technology could change the Fermi Paradox. Asking if humanity is looking for life in the Universe in the wrong ways, or are we looking for the wrong things. Like trying to find smoke signals, in the age of fiber optics.
While the Drake Equation estimates how many civilizations could exist in the Universe, but what is the likelihood that humanity is even capable of detecting them.
Does there need to be another calculation, say the Detection Probability Equation. Showing what’s the likelihood that humanity is able to detect alien life at a given time, and solving the Fermi Paradox.
And does this create a new paradox. Because if future technology advancements increase the number of possible cosmic civilizations, could it also decrease humanity’s ability in detecting them — leading to the detection paradox.
Other topics covered in this sci-fi documentary video include: space telescopes, dyson spheres, the movie Contact by Carl Sagan, Interstellar movie and the time dilation effects, the great silence, the great filter, and solutions and theories for the Fermi Paradox.
PATREON
Michaela Leung: “Oxygen is currently difficult or impossible to detect on an Earth-like planet. However, methyl halides on Hycean worlds offer a unique opportunity for detection with existing technology.”
What can methyl halides, which are gases that consist of one carbon and three hydrogen atoms while being attached to a halogen atom, help scientists identify life beyond Earth? This is what a recent study published in The Astrophysical Journal Letters hopes to address as an international team of researchers investigated how methyl halides on exoplanets known as “Hycean” worlds could indicate the presence of life as we know it, or even as we don’t know it. Hycean exoplanets possess liquid water oceans with a hydrogen atmosphere above them, potentially enabling appropriate surface temperatures and pressures for life to exist.
For the study, the researchers discussed the potential for using NASA’s James Webb Space Telescope (JWST) to observe large exoplanets orbiting red dwarf stars, which are smaller and cooler than our Sun. The researchers noted that recent observations of K2-18 b and TOI-270 d, which are designated as Super-Earth and Neptune-like exoplanets, respectively, while each orbiting red dwarf stars. Additionally, such exoplanets could be ideal targets for JWST to identify methyl halides in their atmospheres. The reason Hycean exoplanets are considered ideal targets is due to the difficulty of observing Earth-sized exoplanets orbiting brighter stars.
Recent advances in astronomical observations have found a significant number of extrasolar planets that can sustain surface water, and the search for extraterrestrial life on such planets is gaining momentum. A team of astrobiologists has proposed a novel approach for detecting life on ocean planets. By conducting laboratory measurements and satellite remote sensing analyses, they have demonstrated that the reflectance spectrum of floating vegetation could serve as a promising biosignature. Seasonal variations in floating vegetation may provide a particularly effective means for remote detection.
Astronomical surveys have discovered nearly 6,000 exoplanets, including many habitable planets, which may harbor liquid water on their surfaces. The search for life on such planets is one of the most significant scientific endeavors of this century, with direct imaging observation projects currently under development.
On Earth-like planets, the characteristic reflectance spectrum of terrestrial vegetation, known as “vegetation red edge,” is considered as a key biosignature.
Mars, the next frontier in space exploration, still poses many questions for scientists. The planet was once more hospitable, characterized by a warm and wet climate with liquid oceans. But today Mars is cold and dry, with most water now located below the surface. Understanding how much water is stored offers critical information for energy exploration, as well as life sustainability on the planet.
A research group from Tohoku University has helped shed light on this by improving an existing Mars climate model. The enhanced model accommodates the various properties of Martian regolith, or the loose deposits of solid rock that comprise Martian soil. The study is published in the Journal of Geophysical Research: Planets.
Mirai Kobayashi says current models fail to account for the fact that laboratory experiments have demonstrated that the water-holding capacity of the regolith is strongly influenced by its adsorption coefficient.
