Next Big Future

Carnival of Space #472

Original Article: Carnival of Space #472
The Carnival of Space #472 is up at Everyday Spacer

Universe Today – Earth-Like Planet Around Proxima Centauri Discovered


Artist’s impression of a sunset seen from the surface of an Earth-like exoplanet. Credit: ESO/L. Calçada


Universe Today – Why Haven’t We Found Any Aliens Yet?

The Galaxy is very big and it is tough to scan for alien signals plus we do not know how scarce intelligent radio using life is. Plus the signals get weaker over the distances.

New, very powerful listening devices will be coming into operation soon as well as sophisticated instruments that will be able to analyze exoplanets atmospheres to look for hints of life. SETI will expand into new areas and scientists will be able to devote a lot more telescope time to the search as the newly funded (100MM) Project Breakthough Listen kicks into high gear. It will cover 10 times more of the sky and the entire 1-10GHz radio spectrum. There will be more powerful optical and infrared searches and it is estimated the project will generate in a day as much data as SETI produced in an entire year.

The program includes a survey of the 1,000,000 closest stars to Earth. It scans the center of our galaxy and the entire galactic plane. Beyond the Milky Way, it listens for messages from the 100 closest galaxies to ours.

The instruments used are among the world’s most powerful. They are 50 times more sensitive than existing telescopes dedicated to the search for intelligence.

Try to brainstorm about how to search for non-radio using intelligent life

SETI scientist Nathalie Cabrol thinks its also time for a new approach to SETI’s search, a reboot if you will. She feels that “SETI’s vision has been constrained by whether ET has technology that resembles or thinks like us. She feels that the search, so far, has in essence been a search for ourselves. Electromagnetic fingerprints of radio transmitions carry a strong like us assumption”. She proposes involving a lot more disciplines in a redesign of the search. Astrobiology, life sciences, geoscience, cognitive science and mathematics among others. Her plan is to invite the research community to help craft a new scientific roadmap for SETI that very well may redefine the meaning of life and the cosmic search for new forms of it.

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Source: Next Big Future

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