James Webb Space Telescope in outer space.

The James Webb telescope could see life on Earth from across the galaxy, new research suggests

I James Webb Space Telescope (JWST) would be able to see signs of our civilization on Earth if it were observing us from another star system in the Milky Way, a new study shows. The discovery raises the prospect that high-tech spacecraft may be able to spot alien civilizations as they peer into the far reaches of our galaxy.

Since its launch in late 2021, JWST has been focusing on the deepest parts of the cosmos in search of clues about how the first ecosystem was formed. But one of the secondary objectives of the telescope is to analyze the atmosphere of nearby exoplanets, or planets beyond the solar system, to look for gases produced by biological life, known as biosignatures, and chemicals produced by advanced alien civilizations, known as technology.

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