The Truth About Tabby


UFO and alien conspiracy theory buffs are going to enjoy this post by the gringa, or not. I guess it depends on if you enjoy a healthy dose of conspiracy debunking or truth. You see, dear readers, there has been a bit of hubbub about an interesting space object that is orbiting a nearby star and was detected by the Kepler telescope late last year.

The SETI Institute (Search For Extraterrestrial Intelligence) calls KIC 8462852 “mysterious”. NASA believes the mystery is resolved with the theory that the strange signals are the result of cosmic dust, probably from multiple impacts of a comet swarm, and causes the star’s light to flicker erratically. Vanderbilt University researchers, who affectionately call the star Tabby, debunk theories by those who believe it to be home of aliens who are very, very busy. The astrophysicist contributors to the respectable Astrophysical Journal agree with Vanderbilt’s point of view while at the same time agreeing with theories from other scientists who propose an extraterrestrial origin theory. So, who’s got it right? Who’s got it wrong? Just what the heck is the truth about Tabby?

Who Is Tabby

Tabby is officially designated star KIC 8462852 and shines brighter than our own Sun about 1400 light years from Earth in the Cygnus constellation. It is a subject of study by NASA’s Kepler space telescope which reveals that from time to time it dims about twenty percent in brightness.

SETI’s Conclusion

The cause of the dimming light could possibly be because of material or objects orbiting the star. SETI researchers believe they have evidence to determine that these objects are not planets. SETI considers the possibility that Tabby could be home to a technologically sophisticated society that has constructed a swarm of solar panels that orbit the star which would account for the light fluctuations.

SETI uses its own Allen Telescope Array to study radio signals that originate from that part of outer space. They attest that these radio signals are of artificial origin, calling them “non-natural”. They search for narrow-band signals and broadband that might possibly be produced by a large and powerful spacecraft. They also search for evidence of laser pulses. SETI’s Panamanian partner, Boquete Optical SETI Observatory, performs the laser pulse research.

Research such as this takes a long time so the gringa will have to practice patience for SETI to conclude their studies and publish their final results. They admit that, historically, cases like this usually result in finding a natural cause for the anomalies but they still must investigate the possibility of it originating from extraterrestrial intelligence. That is, after all, their mission.

NASA’s Conclusion

During four years of observation, the Kepler mission recorded strange happenings in 2011 and 2013 when interesting and dramatic light fluctuations occurred. To help determine what happened, NASA also trained the eye of the Spitzer Space Telescope in Tabby’s direction. Kepler observed the visible light. Spitzer could delve deeper into the invisible infrared light signals and patterns. In November of last year Spitzer paid off with a recording of another light fluctuation.

Although NASA’s theory is that clouds of space dust were formed from a swarm of comets that orbit the star in erratic patterns, Spitzer did not discover evidence to support this theory. This caused NASA to switch to a cold comet theory. One lead comet would be followed by a swarm of smaller comets. If this is true, even if the comets were already out of the telescope’s view as they traveled around Tabby, they should still leave behind a detectable infrared signature. However, this was not the case.

Researchers admit that more observations need to be recorded to determine just exactly what is going on. NASA admits that Tabby is strange, indeed. However, they believe that a natural cause is more likely than “little green men”.

Vanderbilt University’s Conclusion

Vanderbilt studies focused on the 100 day period when the most significant light fluctuations occurred. The manner in which they occurred suggested that a large number of “irregularly shaped objects” passed in front of the star causing its light to be blocked temporarily. Working off a report from an astronomer at Louisiana State University who concluded that the star had diminished in brightness by 20 percent over the past century, Vanderbilt finds a natural cause unlikely as an explanation for this. This has become fodder for the theory that a megastructure has been constructed that is absorbing the star’s energy, the solar panel array theory. This is a theory that was reviewed, accepted and published by the Astrophysical Journal.

Vanderbilt, however, did not stop there. They soldiered on. Partnering with amateur German astronomer, Michael Hippke and NASA scientist Daniel Angerhausen, the team began comparing the 20 percent drop in intensity to other stars. They discovered that this is not an unusual phenomenon. In fact, it’s not a star phenomenon at all. It is simply the result of technological changes and advances of human manufactured instrumentation for observance.

The Gringa’s Conclusion

These are all interesting theories but not yet solid answers. So, the gringa will wait and see if, ten or twenty years down the road, we all find out what the actual, final answer is:

  • Comet Swarms

or

  • Extraterrestrial Solar Array

Until then, Tabby will be the most interesting and mysterious star in our night sky.

Sources:

www.seti.org

www.nasa.gov

vanderbilt.edu

Image Credit:  www.centauri-dreams.org

 

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Kennedy Spaceport, It’s Official


Has the gringa mentioned before that I’m a Trekkie? I’m sure I have. And that includes all the spin-offs, like “Deep Space Nine”. Although the International Space Station is nothing like that orbital station, we Earthlings are one step closer to becoming more “Trek-like”. No longer are the places that rockets launch from simply called “facilities”. Nope, now we can all officially call that “space center” in Florida the “Kennedy Spaceport”.

You see, we are no longer just launching rockets and shuttles. We are entering the phase of space travel being performed in spacecrafts. It’s a different concept altogether, although the spaceships are still flung through Earth’s atmosphere riding piggy-back on a rocket.

The Cygnus spacecraft is delivered into space attached to an Atlas V rocket. This spacecraft is for cargo delivery. The Orion spacecraft hitches a ride on a Delta IV Heavy rocket. It is a spacecraft in which a crew actually travels aboard. The Kennedy Spaceport will also be where the Dragon and Starliner, the large crew capacity spacecrafts, will launch.

NASA’s spacecrafts will no longer need the runway previous shuttles used. The runway is three miles long and 300 feet wide. However, it is not just going to be forgotten now that the shuttle program has entered NASA’s annals of history. Commercial and government partners will be putting it to good use. Even NASA repurposes, the gringa likes this.

The Kennedy Spaceport is leading the way for the space travel and space science industry to prepare for their ultimate challenge, the manned mission to Mars. By having a multi-use spaceport, industry partners and NASA can streamline their efforts which will result in greater efficiency in their collaborations in developing and testing the technologies that are going to safely deliver a crew to the Red Planet.

The spaceport will also be able to process resupply missions quicker and more efficiently. The purpose of the missions on the International Space Station are research, research, research as well as testing new technologies. This is all part of NASA’s goals to improve life on Earth and accomplish gains and progress in space exploration.

A consolidated spaceport is NASA’s new approach to managing the flow of traffic to and from space. Within the coming years, traffic to and from the space station will increase considerably. Such traffic will not just be to swap crews on the ISS or resupply the ISS. The next big project is to lasso an asteroid and tow it into orbit around our moon. This will then usher in a series of missions where crews will travel to this asteroid and begin their Mars mission training.

Kennedy Spaceport is going to be the hub of all of this space travel activity. It will become the home of thousands of engineers, technicians and scientists who support the astronauts while they are off-world.

President Obama challenged NASA to create a spacecraft and support technology that would enable astronauts to perform long-term, deep-space missions with the ultimate goal of landing on Mars. NASA accepted the throw down of the gauntlet and the Kennedy Spaceport is one more step to fulfilling this challenge. Further testing of the Orion spacecraft will eventually result in it being ready to deliver astronauts to deep space and an exploration venture of Mars.

NASA has every confidence that it will fulfill President Obama’s objectives. Why does this space agency have such confidence? Because it believes in the skills of its personnel.

And one more reason to get behind this agency’s efforts is its dedication to respect the source of its funding. Not only is NASA repurposing the shuttle runway but it is also repurposing many buildings and structures throughout the sprawling Kennedy complex. Some buildings that NASA has no use for will be used by industry partners. The unique capabilities of these commercial companies will be right next door to the agency they are developing technology for.  This can only improve research and development and save the taxpayers lots of moolah.

Very soon launches of crews to outer space will be a regular thing. On-worlders will see them as “no big deal”. Eventually it will take something really spectacular and unbelievable to make us go, “WOW”, something like, boots on the ground on Mars!

Source & Photo Credit: http://www.nasa.gov

 

The Cygnus Mission


The next real event to take place with NASA is the Cygnus mission. This will be a resupply of the International Space Station (ISS) with a cargo space vehicle contracted by NASA with the Orbital ATK company.  It will feature a new propulsion system in the first launch stage which they hope performs well and will continue to be used throughout slotted 2016 commercial resupply services (CRS) missions.

In October there was the disappointment of the launch failure of the Antares vehicle but teams have worked tirelessly to determine the reason for the failure and make any necessary changes to prevent future failures and ensure 100% success. Although this is an unmanned spacecraft, the goal is always 100% success.

The Cygnus spacecraft is undergoing enhancements such as launching aboard an Atlas V rocket, having the Antares rocket upgraded, integrated with the new RD-181 main engines and this upgrade being tested in a launch slated for a December 19, 2015 resupply mission. The RD-181 engines are more powerful than previous thrusters and make increased payload capacity possible.

The Atlas V rocket  is the delivery system for the Cygnus spacecraft that will deliver almost 8,000 pound of supplies and cargo to the ISS. Three previous missions have already delivered an equivalent payload and have actually removed more cargo than they have delivered. And, since there’s no Tuesday/Thursday curbside garbage pick-up at the ISS, this is a critical service. One of the important aspects of the enhanced design of the Cygnus is that it can carry almost three times the payload of previous missions. This is time saving as well as tax dollar saving. In 2016 Cygnus will carry out three more resupply missions and hopefully fulfill its maximum load capacity capabilities.

The Cygnus itself is an unpiloted, pressurized, cargo module. When it launches in December its cargo will not only contain life sustaining supplies, but important research materials. After achieving orbit, the craft will self-guide until it achieves a position near the ISS where it will be grabbed by the station’s robotic arm. It will be connected to a port and unloaded then reloaded with the station’s garbage, re-enter Earth’s atmosphere and incinerate. Mission accomplished!

Although Orbital ATK has the resupply contract, they are not the company responsible for the construction of Cygnus. In case you haven’t guessed by the name, it is of Italian origin. Thales Alenia Space designed and constructed the module in Italy.

And that is yet one more reason the gringa loves NASA and the entire scientific community that is committed to space exploration. These are the folks who not only see no limits to what mankind can achieve, they also do not see borders. The gringa hates the concept of borders. We’re all just people. We all just want to have the best opportunity possible to create the best life possible. Why should a situation that I had no say in or control over, who my biological parents are and where they gave birth to me, have anything to do with where I, as an adult, choose to live and build a life? Where is the freedom and justice in that? As long as there are barriers, there is no real freedom.