In Star Trek, the starship Enterprise encounters an alien Dyson Sphere. On Earth, NASA could detect one with its next-gen telescopes, astrobiologists suggest. CBS VIA GETTY IMAGES

Topics: Astrobiology, Astrophysics, Dyson Sphere, Exoplanets, NASA, SETI

Astrobiologists are calling on NASA to use what geologists are learning about a new era sometimes called the “Anthropocene” to help develop space missions for the search for extraterrestrial intelligence.

Not that astronomers can peer into the rock strata of alien worlds in the hope of finding traces of existing (or vanished) civilizations. What they can do is look for changes in planetary atmospheres — changes that Haqq-Misra and colleagues refer to as “techno-signatures” in a policy paper submitted to the US National Academy of Sciences.

Abstract
Human influence on the biosphere has been evident at least since the development of widespread agriculture, and some stratigraphers have suggested that the activities of modern civilization indicate a geological epoch transition. The study of the anthropocene as a geological epoch, and its implication for the future of energy-intensive civilizations, is an emerging transdisciplinary field in which astrobiology can play a leading role. Habitability research of Earth, Mars, and exoplanets examines extreme cases relevant for understanding climate change as a planetary process. Energy-intensive civilizations will also face thermodynamic limits to growth, which provides an important constraint for estimating the longevity of human civilization and guiding the search for extraterrestrial intelligence. We recommend that missions concepts such as LUVOIR, HabEx, and OST be pursued in order to make significant progress toward understanding the future evolution of life on our planet and the possible evolution of technological, energy-intensive life elsewhere in the universe.

“If you saw a planet like Earth, around a yellow star and you saw methane and ozone and carbon dioxide, that’s a classic bio-signature,” Haqq-Misra says. “But if you see a planet like Mars, just a little outside the traditional habitable zone, where you’d expect it to be cold, but you observe CFCs (chlorofluorocarbons) and PFCs (perfluorocarbons) and exotic greenhouse gases that seem to be raising the [planet’s temperature], that would be pretty good evidence for terraforming — like us terraforming Mars.”

Techno-signatures might also take the form of infrared light that might represent heat loss from large-scale engineering projects, such as orbiting solar collectors or planetary sun shades designed to offset global warming.

Such things, Haqq-Misra says, might lie in the future of any technologically advanced civilization faced with the dual problems of population growth and increasing energy needs.

Use new telescopes to scout for ET tech, astrobiologists tell NASA Richard A. Lovett, COSMOS Magazine

Views: 7

Comment

You need to be a member of BlackScienceFictionSociety to add comments!

Join BlackScienceFictionSociety

Badge

Loading…

IMPORTANT ALERTS

ALERT! ALERT! ALERT! 

IF YOU ARE HAVING TROUBLE CHANGING YOUR PROFILE  PICTURE, SWITCH TO EITHER CHROME BROWSWER OR FIREFOX. THERE IS A KNOWN ISSUE WITH INTERNET EXPLORER THAT CAUSES TROUBLE CHANGING PICTURES.


PLEASE DO NOT SIGN IN WITH FACEBOOK IF YOU ALREADY HAVE AN ACCOUNT. YOU WILL CREATE A DUPLICATE THAT WILL NOT HAVE YOUR INFO CONNECTED. THANKS

NO SPAMMING

Please do not greet everyone on the site with large images and/or announcements of your book or business. Yes, you want to tell the world, but learn the fine art of subtlety. We have lost numerous members because of the amount of 'friend' mail they instantly receive. This Hurts Everyone.

Also, DO NOT post the same information multiple times throughout the site. It will be deleted without notice.

 

Spam is unsolicited advertising, whether it is posted as comments on other members' pages or is emailed for marketing purposes.

 

Please be considerate. Post your advertisement in the proper Articles/Forum or Group. There are inexpensive marketing channels that reach every member for just $25 on the Advertising tab. You can post your information on your profile and even update your blog as often as you like.

 

We are not into censorship, so please don't make us ask you to leave. Be kind and unselfish - don't spam.

 

Your Account Will Be Deleted Without Warning For Spam.

 

Blog Posts

Tea Leaves and Quantum Dots...

Posted by Reginald L. Goodwin on May 23, 2018 at 10:05am 0 Comments

Image Source: EurekAlert!

Topics: Biology, Biomedicine, Cancer, Nanotechnology, Quantum Dots

We now have a…
Continue

Extraction!

Posted by Ronald T. Jones on May 22, 2018 at 2:10pm 0 Comments

https://www.amazon.com/Extraction-Ronald-T-Jones-ebook/dp/B079Z1GMDQ/ref=sr_1_1?s=books&ie=UTF8&qid=1526999566&sr=1-1&keywords=Extraction+by+ronald+t.+jones

Far future Earth. Humanity is no longer isolated, having established relations with other sentient species across the stars. But humans remain divided among a group of Regional Coalitions that have replaced the old nation-states.Tensions between the Coalitions threaten an already tenuous peace maintained by Unified Earth, a representative body that has tried to speak with one human voice to the galaxy. Unified Earth asks the African Union, a major Regional Coalition power, to rescue a group of humans that have been kidnapped by marauders and taken to a distant,…

Continue

Graphene Mirabilis...

Posted by Reginald L. Goodwin on May 22, 2018 at 12:40pm 0 Comments

Illustration: Nanotools Bioscience

Topics: Biology, Cancer, Graphene, Nanotechnology, Research

See: "Annus mirabilis" at Wikipedia for the cultural reference.…

Continue

Product Review Updates

Posted by Stephen Alexander on May 21, 2018 at 9:31pm 1 Comment

Occasionally, I will update members of the club as to the status of products I've reviewed.

Here's what I learned this week.

  • Katharos: The Shattered World is returning from hiatus with a new site in June. Click the Patreon link for more details
  • Keloid has made its Indiegogo goal and has the funds it needs for season 2. They may have started production. Their Indiegogo page did not say. Click the link if you're curious.
  • The Force #2 is in progress. Check out UrbanGodInk Studios at their facebook page.
  • Urban Shogun has a sci-fi comic out now called Sankofa Guard. Check it out…
Continue

Product Review Updates

Posted by Stephen Alexander on May 21, 2018 at 9:27pm 0 Comments

Occasionally, I will update members of the club as to the status of products I've reviewed.

Here's what I learned this week.

  • Katharos: The Shattered World is returning from hiatus with a new site in June. Click the Patreon link for more details
  • Keloid has made its Indiegogo goal and has the funds it needs for season 2. They may have started production. Their Indiegogo page did not say. Click the link if you're curious.
  • The Force #2 is in progress. Check out UrbanGodInk Studios at their facebook page.
  • Urban Shogun has a sci-fi comic out now called Sankofa Guard. Check it out…
Continue

Kilauea Prognostication...

Posted by Reginald L. Goodwin on May 21, 2018 at 8:05am 0 Comments

Debris came rocketing out of Kilauea during the steam eruption on 17 May.Credit: USGS-HVO

Topics: Geophysics, Earthquake, Research, Stochastic Modeling

After weeks of unleashing earthquakes and lava flows that have forced thousands of people to evacuate their homes, Hawaii’s Kilauea volcano has finally blown its…
Continue

The Digital Brothers Multimedia

The Digital Brothers
Our goal is to provide cost effective technological solutions for home, small and big business. After over 20 years of service working in this field, we decided to utilize our talents to develop and cultivate our own vision to benefit the community.
2D & 3D Animation
Graphic & Web Design
Photo & Video
Multimedia Development
Online & Print Marketing

Contact Us Today To Assist In Your Business Success
Website: www.TheDigitalBrothers.com
Email: info@thedigitalbrothers.com

SKYCITY TALKRADIO

THE UNDERGROUND BY ROXANNE BLAND

Life as alpha of a werewolf pack is anything but predictable. But even Parker Berenson is surprised by the latest twist: he’s fallen in love with a space alien. Problem is, he suspects Melera, his sexy new flame, might be the serial killer terrorizing Seattle. Or maybe she isn’t. After all, just because she’s an interstellar assassin doesn’t mean she’s guilty.

http://blackrosepress.com/

© 2018   Created by Jarvis Sheffield - Admin.   Powered by

Badges  |  Report an Issue  |  Terms of Service