Communication with Alien Civilizations

SETI, whose job it is to find proof of alien civilizations, has yet to find any alien civilizations. The methods employed by SETI has so far focused on trying to receive messages via the EM spectrum for alien communication.

So far, SETI has been looking for messages from other alien civilizations in the form of "Anybody out there?" However, it may soon be looking for any signs of other alien civilizations by attempting "to eavesdrop on stray signs of intelligence leaked accidentally into space by other civilizations", says Steve Nadis in his Astronomy article titled Eavesdropping on E.T.: Could Changing Channels Tune Into Alien Civilizations?.

There is a quiet zone in the EM spectrum between 1 and 10 GHz. Fewer objects in the universe naturally transmit in that frequency range. If other alien civilizations know this, they may choose to intentionally transmit signals at that level. However, it may be easier to look for signals that alien civilizations naturally put out. The problem is that there is so much background noise at other frequencies, both from the Universe and Earth itself (our own civilization). Some scientists hope that a new radio-telescope coming on line in Australia called Murchison Wide-Field Array (MWA) will allow them to find anomalies that may be leaked transmissions of other alien civilizations. Though MWA is really meant to study the end of the Universe's Dark Ages (when stars began to form), it will also be able to find transient signals that may be signs that something else is out there.

Earth has been broadcasting its presence since the 1920's. Maybe another civilization has been doing the same for much longer? We will soon see.

Reference: Astronomy May 2008, Eavesdropping on E.T.: Could Changing Channels Tune Into Alien Civilizations?, by Steve Nadis

Related articles

• Video: What Would Trees Look Like On Other Planets?
• Predictions of Evolution of Alien Life
• Communicaion with Alien Civilizations
• Odds of Humaniods Evolving again
• Part 5: Blue Plants
• Part 4: Silicon Life
• Part 3: Arsenic Life
• Part 2: Exotic Amino Acids
• Part 1: Mirror Life

Tuesday Two: Sponging up energy

Tuesday Two

Get nearly perpetual power with these little energy cells that can recharge by harvesting ambient energy, such as kinetic, electromagnetic, heat, radio frequency, and light. This may change everything from hand held devices to desktop computers.

In real life Star Trek technology news, there's a phrase (not phaser) translator called the Phraselator which will translate statements into one of several languages. It's one-way translation today, but with two of these, you just might be able to carry on a short conversation about the weather with just about anyone on the planet.

Epoch-Fail

To prepare you for your American Idol debut, the Perpetual Kid website (purveyer of many potential Epoch-Fail canidadates) has the Shower Mic Sponge.

Hiller Aviation Museum

I recently had a chance to visit the Hiller Aviation Museum. It's an interesting place. The museum is housed within a former industrial building.

In the main entrance hall, the visitor can view a sizable restoration shop with its menagerie of old equipment and tools. The shop is bigger than some machine shops. There are also many scaled airplane models dangling from the ceiling. Let's not forget the rather sizable souvenir shop. Yes, I bought the t-shirt. :)

The main viewing room is the entire right side of the building. It houses many full scale and scaled air machines, with some original airplanes mixed with replicas. Where there's space to fill, you'll find an airplane or parts thereof.

One of the more interesting facts promoted at this museum is that there where successful attempts at powered flight long before the Wright Brothers. The Herman Avitor Jr. (or just Avitor) was powered by a 1-hp steam engine that drove twin propellers. It was was the first successfully flown heavier-than-air aircraft to employ a three-axis control system. It was built in San Francisco, CA. In 1869 it took flight near the modern day SF Int'l Airport. Sometime after its first flight, the contraption was destroyed when it caught fire.

Another interesting exhibit was the Pepsi Skywriter, used by Pepsi to promote their product for a few decades starting in the late 1920's. I'm not sure if this is a replica, but it is interesting to see the old Pepsi logo and figure how long ago companies where using inventive new marketing techniques to promote their products.

For You

Flowers I present by love
for my baby, whom I adore

Run to me, my love, kiss me
and feel my heart beat for you

Lean your head on my shoulder
I am your support for life

Guide your heart to my harbor
I shall protect you from storms

Open your places hiding deep
and I will handle with care

Your dreams have haven in me
Our dreams we share as you sleep

These flowers represent all
of my expressions of love

For You


Copyright ©1999, 2001 & 2003 Matthew Lorono All rights reserved

Possible types of Alien Lifeforms (Part 5: Blue Plants?)

It has been sited by physicists that while photosynthesis on Earth generally involves green plants, a variety of plants of alternative colors may also utilize photosynthesis. The other colors might be preferred in places that receive a different mix of solar radiation than that received on Earth.

Plants on Earth are green because they contain chlorophyll. The chlorophyll is green because it absorbs mainly blue and red light in order to produce food for the plant via photosynthesis, while reflecting the green light frequency.

Scientists at NASA point out that if the stars for other planets were in a different state than our sun and if the light frequency that reached the planets' surface was different, then the plants would have also evolved a different type of photosynthetic pigment (other than chlorophyll). This pigment would be dedicated towards the different light frequencies received by the planet. This would cause plants to appear a different color from green, such as red and yellow.

According to recent studies, no photosynthetic plants would be blue-colored. This is because blue light provides some of the highest photosynthetic yields in the light spectrum. It is important for blue light to be absorbed rather than reflected. This is based on the physical quality of different frequencies of light produced by known types of stars.

One terrestrial example of energy conversion based on something other than ordinary light involves radiotrophic fungi that convert high energy gamma rays into useful energy using the melanin. (In most organisms melanin is used to protect the organism against ultraviolet and solar radiation.) Even still, ordinarily fungi derive their energy from decomposing other biomass, rather than by converting radiation into energy for itself.

It could even be possible for photosynthesis to occur using infrared light. In such an environment, plants may actually appear black.

It is fascinating to image the variations of life that are possible, even if life is based on the same fundamentals as our own.

Reference: Wikipedia article; Wikinews article; NASA - NASA Predicts Non-Green Plants on Other Planets; Dadachova, E; Bryan RA, Huang X, Moadel T, Schweitzer AD, et al. (2007). "Ionizing Radiation Changes the Electronic Properties of Melanin and Enhances the Growth of Melanized Fungi". PLoS ONE 2 (5): e457. doi:10.1371/journal.pone.0000457; Candace Lombardi "NASA: Plants on other planets not green". CNET, April 11, 2007; Julie Steenhuysen "New hue: Plants on other planets may be yellow, red". Reuters, April 11, 2007; Ker Than "Colorful Worlds: Plants on Other Planets Might Not Be Green". Space.com, April 11, 2007; “The Color of Plants on Other Worlds” by Nancy K. Kiang, Scientific American April 2008

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Related articles

• Video: What Would Trees Look Like On Other Planets?
• Predictions of Evolution of Alien Life
• Communicaion with Alien Civilizations
• Odds of Humaniods Evolving again
• Part 5: Blue Plants
• Part 4: Silicon Life
• Part 3: Arsenic Life
• Part 2: Exotic Amino Acids
• Part 1: Mirror Life

Lost Love

My Quiet Warm Heart
Inside Tired and Resting
Building Morrow's Strength