Technosignature
Videos
Technosignature or technomarker is any measurable property or effect that provides scientific evidence of past or present technology. Technosignatures are analogous to biosignatures, which signal the
Illustration of various types of technosignatures
Lights from cities and infrastructure on Earth at night from space
Artist's illustration of an advanced ET civilization with industrial pollution
The IKAROS light sail of 2010
Stellar engine
Videos
Stellar engines are a class of hypothetical megastructures which use the resources of a star to generate available work. For instance, they can use the energy of the star to produce mechanical, electr
Technosignature
…such as radiation leakage from megascale astroengineering installations such as Dyson spheres, the light from an extraterrestrial ecumenopolis, or Shkadov thrusters with the power to alter the orbits of stars around the Galactic Center, may be detectable with hypertelescopes. Some examples of technosignatures are…
Diagram of a class-C stellar engine (to scale) built around a Sun-like star. It consists of a partial Dyson swarm composed of 5 Dyson rings of solar collectors (the class-B component), and a large statite Shkadov thruster (the class-A component). Perspective is from below the system's ecliptic at a distance of ~2.8 AU. The system's direction of acceleration is on a vector from the center of the star through the center of the Shkadov thruster, which is hovering over the star's north pole (with regards to the ecliptic), at a distance of 1