About Search 4 Xtraterrestrial Life

In this blog, I talk about how aliens might live, how their bodies might function, what types of aliens there might be, and the possible structures in an alien society. I bring you up-to-date news about anything in space involving the possibilities of life. Also, I talk about the histories of our own species, and their endeavors into space. Please subscribe to my blog, and enjoy reading it!

Some posts include: http://search4xtralife.blogspot.com/2008/12/terraforming-morals.html

http://search4xtralife.blogspot.com/2009/02/alien-diplomacy_09.html

http://search4xtralife.blogspot.com/2009/01/space-faring-civilizations-beginnings.html

Sunday, June 27, 2010

Life on Brown Dwarves


NASA has recently come across the coolest brown dwarves (failed stars) in the known universe. Could life exist on these barren bodies? Many brown dwarves are alone, not orbiting anything or recieving sunlight. They emit very little light themselves. These new brown dwarves are in a special class of stars below 2,240 degrees Fahrenheit. Could microbes exist on them? Life on this planet has adapted to the freezing arctic temperatures and to thermal vents in the bottom of the sea. Why couldn't they evolve to live in a relatively cool stellar atmosphere? They would be able to have water, protection from UV rays with the thick atmosphere, and a source of heat. The only thing that they wouldn't have is sunlight, unless the brown dwarf was part of a multi-star system.

Thursday, June 24, 2010

Kuiper Belt Life


The New Horizons space probe was launched a few years ago, and is headed to the outer limits of the solar system with the intent of studying icy bodies. How might places far from the sun, like Pluto and the Kuiper Belt, have life? Here on Earth, there are life forms that live inside the ice of Antarctica; they literally grow in the cracks! However, they don't have to worry about the atmospheric cycles that Pluto and other bodies have. As Pluto revolves around the sun, the ice on its surface slightly evaporates and creates an extremely thin atmosphere. Could life handle these changes of melting and freezing? The main problem they might have is adapting, due to the length of its orbital period. However, microbes would be able to adapt; they would evolve to live in freezing temperatures, live with little atmosphere and survive with little sunlight.

Wednesday, June 23, 2010

Perspectives from Place in Space


Earth is in the 'habitable' zone of our solar system; where the sun's rays allow for us to be the perfect temperature, a gas giant is there to protect us from asteriods, and our moon allows for tides and fine-tuning of our planet's temperature. Scientists have discovered that there are many more habitable locations in our solar system. Moons like Europa, Ganymede, and Io may be host to microbial life, or even sea creatures. Creatures on these moons may become very complex, possibly evolving intelligence. Planets in systems with red dwarves are being studied. Aliens on these planets might have a non-photosynthetic beginning, unless they are nearby the star. We have observed that complex life can evolve around a chemosynthetic base. Multi-stellar systems, like in the photograph, could develop a wide array of photosynthetic life. These life forms would likely display complex behavior, due to having to respond to the different levels of light as they revolve around the stars.
Many different locations and places will have different forms of life; always keep an open mind and remember that just as Earth life is unique, other life will also be unique.

Tuesday, June 22, 2010

Could Human History be Lost?

We have sent messages into space for decades; if an alien responded to a message and visited an Earth devoid of Human life, would there be any evidence? Structures of stone would last a really long time. It has been shown that colonized areas with plant life, like Asia and South America, have been entirely cloaked from view. Even with new satellite technology, we are finding new structures continually. Another sign of possible sentience on our planet is the distribution of life on Earth. With the globalization of our society comes the transportation of animals. Horses, bees, fruits, foods, plants, and many other living things have been imported to new locations. Intelligent alien species might be able to piece together how we were involved. Finally, the space artifacts on other planets and the space debris surrounding our planet is the last evidence of humanity. Would it be possible to extend our influence further, to extend the proof of our existence on this earth?

Wednesday, June 16, 2010

Dependence on Technology

This past weekend I went backpacking in the mountains, and began thinking of how dependent we are on technology, new sciences and other products of our society. Early in history, humans knew nothing of bacteria, artificial materials, or mindsets that we currently have. As I began to hike with my 18-pound pack with all of the essentials that I needed, and when I was processing the 'diseased' water with my filter, I realized how vulnerable we are to technology. If humans were to lose all of our technology, our world would fall apart. In my next post, I hope to talk about how we could/will ease ourselves from technological dependence.

Wednesday, June 9, 2010

We Find Life: Where Do We Go from There?

If we find alien life on Titan as discussed in my previous post, where do we go from there? The Cassini spacecraft is observing the northern methane lakes, and will continue to view it. If we find life, we will probably first send another probe there to land on the surface and take samples. When we get the biological information, we will begin the process of studying the genetic information and comparing it to our forms of life. We will also observe how it breathes, gets energy, reproduces, evolves... the astrobiological field will explode! There is also the possibility of genetic experimentation, blending Terran and Titan(ian) genomes and finding new uses for microbes. Later, probably after we have created bases on the moon and on Mars, human scientists will live on space stations surrounding Titan and study the life further.

Friday, June 4, 2010

Titan: More Evidence for Life?

NASA scientists have gotten information from the Cassini spacecraft that there has been a lot of action on the surface of Titan. Complex chemical reactions on the surface may be proof that life exists on Titan; because of all of the methane on the planet, they may be dependent on this or other elements to survive. NASA reports that there has been a lack of acetylene and an outgassing of hydrogen on the surface. On Titan, there is no form of water; if there is alien life, it would not be water-dependent, like everyone says that they 'have to be'. This information is very exciting, especially to those in the astrobiological field.

To view NASA's article, visit: http://www.nasa.gov/topics/solarsystem/features/titan20100603.html

Wednesday, June 2, 2010

Explore the Universe and Aid Astronomers!

One of the most successful citizen-led science projects has been noticed by NASA; ZooUniverse has been involved in a wide range of astronomical studies, ranging from Supernovas to Hubble Images. Now view the moon, and aid scientists in studying craters and other lunar features in views of unprecident quality!

NASA Article ~ http://www.nasa.gov/mission_pages/LRO/news/moon-zoo.html

Zooniverse Website ~ http://www.zooniverse.org/home