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Related Experiment Video

Updated: Dec 22, 2025

Bringing the Visible Universe into Focus with Robo-AO

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Published on: February 12, 2013

Observational Constraints on the Great Filter.

Jacob Haqq-Misra¹, Ravi Kumar Kopparapu², Edward Schwieterman^1,3

¹Blue Marble Space Institute of Science, Seattle, Washington.

|May 5, 2020

Summary

This summary is machine-generated.

Searching for alien technology (technosignatures) alongside life (biosignatures) with new telescopes offers insights into civilization

Keywords:

Biosignatures Exoplanets Fermi paradox Great Filter Technosignatures

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Area of Science:

Astronomy and Astrobiology
Exoplanetary Science
Search for Extraterrestrial Intelligence (SETI)

Background:

Next-generation space telescopes aim to detect spectroscopic biosignatures on exoplanets.
Technosignatures, evidence of extraterrestrial technology, represent an extension of exoplanet characterization.
Current missions primarily focus on biosignatures, with limited capacity for mid-infrared technosignature detection.

Purpose of the Study:

To explore the implications of searching for technosignatures alongside biosignatures.
To assess how detecting technosignatures informs our understanding of the prevalence of life and technological civilizations.
To investigate the significance of technosignature abundance for the 'Great Filter' hypothesis.

Main Methods:

Spectroscopic analysis of exoplanets using next-generation space telescopes.
Observational constraints on the abundance of exoplanets with biosignatures.
Comparative analysis of biosignature and technosignature detection capabilities across different wavelengths (UV to mid-infrared).

Main Results:

Current mission concepts can constrain the fraction of life-hosting planets but have limited capability for technosignature prevalence.
The abundance of technosignatures provides crucial information about the 'Great Filter' in planetary evolution.
A universe rich in technosignatures suggests the Great Filter may be behind us; a lack thereof suggests it lies ahead.

Conclusions:

Integrating technosignature searches with biosignature searches offers a more comprehensive understanding of exoplanetary potential.
The presence or absence of technosignatures has profound implications for humanity's future and our place in the cosmos.
Future space telescope missions should consider capabilities for both biosignature and technosignature detection to maximize scientific return.