Tag

Advanced Civilizations

All articles tagged with #advanced civilizations

science-and-technology1 year ago•4 min saved

Astronomers Identify Possible Dyson Sphere Candidates

Astronomers have identified seven potential candidates for Dyson spheres, hypothetical alien megastructures designed to harness a star's energy, within 1,000 light-years of Earth. These candidates, all M-dwarf stars, exhibit excess infrared radiation, a possible signature of such structures. However, natural explanations like gas and dust discs cannot be ruled out. While the concept of Dyson spheres is intriguing, the feasibility of their construction remains highly speculative due to the immense material and energy requirements.

via The Conversation Indonesia|

#advanced-civilizations #alien-megastructures #astronomy

astronomy1 year ago•3 min saved

"Exploring the Seven Most Promising Worlds for Advanced Civilizations"

A recent paper identifies seven known exoplanets that could potentially have been the starting point for intentional panspermia, the seeding of life on Earth by an advanced civilization. The study considers factors such as planet size, temperature, habitable zone placement, and age, ultimately narrowing down the candidates to seven exoplanets. Kepler-452 b, with a star and orbit similar to ours, stands out as a potentially interesting focal point for future exoplanet surveys. While speculative, the paper underscores the importance of detailed examination of known exoplanets in the search for advanced civilizations.

via Universe Today|

#advanced-civilizations #astronomy #exoplanets

astronomy2 years ago•6 min saved

"Searching for Advanced Alien Life: Clues in Nearby Worlds and Alien Atmospheres"

Astronomers are exploring the possibility of detecting advanced civilizations on exoplanets by searching for atmospheric pollution produced by technological societies. MIT's Sara Seager and an international team of scientists propose nitrogen trifluoride (NF3) and sulfur hexafluoride (SF6) as ideal technosignature gases, as they are not created by life on Earth and have unique spectral features. Spectroscopy via the James Webb Space Telescope (JWST) can be used to search for these gases, along with other potential technosignatures such as artificial lights, megastructures, waste heat, and radio signals. Machine learning and big data analysis are also being employed to identify outlier data that may indicate the presence of advanced civilizations. However, public support and funding are crucial for the search for life elsewhere and the exploration of exoplanets.

via Universe Today|

#advanced-civilizations #astronomy #atmospheric-pollution

science-and-technology2 years ago•3 min saved

"Are We Invisible to Advanced Civilizations?"

A new paper explores the possibility of advanced civilizations detecting relics of human civilization. Our radio signals, although powerful, would likely only be detectable within a few light years of Earth due to fading power and interference. To detect features like the pyramids of Giza, an optical telescope with a diameter larger than Saturn's orbit would be needed, which is currently beyond our technological capabilities. However, a Type II civilization could potentially detect our great works within 3,000 light years, while it may take thousands of years for us to reach a level where we can see them in return.

via Phys.org|

#advanced-civilizations #extraterrestrial-life #kardashev-scale