August 5, 2010 § 2 Comments
Thank you Bill Nye the Science Guy. It is so hard to speak out against America’s heroes but lately they are talking as if they are bucking futnucks. I know it all comes down to money. They have “friends” who are heavily “invested” in the Constellation program. All their blustering about people losing jobs is just their way of saying “we are losing money”.
While Bill Nye does not bring up the money issue in his commentary (he is to classy for that), he does point out that NASA has not ended its manned space exploration program.
“I never imagined, not for a moment, that I would so strongly disagree with two of the world’s heroes, John Glenn and Neil Armstrong. As of this writing, these astronauts are opposed to key aspects of NASA’s new plan for space exploration. They, along with a few others, believe that the U.S. is ending its human (manned) space exploration. I cannot help but ask, have these opponents read the same documents that I have? Are we all talking about the same NASA?” Read full the full article
August 2, 2010 § Leave a comment
Every where I look I see bubbles. Ok, I know I see them because I am looking for them. I know the psychology. But, it is still fun and fascinating in many cases such as the Hubble Bubble.
“The Copernican principle holds that humans are not privileged observers of the Universe. Copernicus stated that the Earth is not at the center of the solar system or at any particularly special position in the heavens. Modern cosmology has extended this idea to reason that the earth does not occupy any unique position in the Universe. Modern philosophy of science pushes the principle even further to conclude that every observer (even if they be they little green men) should reason as if they were the most standard observer. However, despite all these humble and rational thoughts it is still tempting to explain certain aspects of modern cosmology that seem finely tuned as consequences of observer selection effects. Namely I am speaking of dark energy or the accelerated cosmological expansion which supposedly could be explained if we occupy a privileged position near the center of a large, nonlinear, and nearly spherical void in mass density. The idea that the region of the cosmos around us could be a void is colloquially known in astronomy as the Hubble bubble.” Read full article please
July 29, 2010 § Leave a comment
This is one of the most exciting theories I have heard in a long time. I am going to tell you why and you are going to think I am even nuttier than you already do. But, as you know, I don’t care. One night after watching some documentary about Stephen Hawking and the black hole wars, I was lying in bed just contemplating the Universe. Suddenly and image came into focus and a said aloud to my husband.
“I get it. It has a hole but it has no hole.”
Of course he groggily responded.
“What the hell are you talking about?”
I went on to explain that I had seen an image of the Universe. That it was kind of like a doughnut. But, because we are inside the ring so we just keep going around and around. From our perspective it doesn’t have a hole. And the image I saw it was all stretched out so the “doughnut hole” was almost invisible.
“A new cosmology successfully explains the accelerating expansion of the universe without dark energy; but only if the universe has no beginning and no end.
Shu’s idea is that time and space are not independent entities but can be converted back and forth between each other. In his formulation of the geometry of spacetime, the speed of light is simply the conversion factor between the two. Similarly, mass and length are interchangeable in a relationship in which the conversion factor depends on both the gravitational constant G and the speed of light, neither of which need be constant.
So as the Universe expands, mass and time are converted to length and space and vice versa as it contracts.
This universe has no beginning or end, just alternating periods of expansion and contraction. In fact, Shu shows that singularities cannot exist in this cosmos.” Read the full article…
July 26, 2010 § Leave a comment
July 26, 2010 § 3 Comments
* The diagram below outlines the major Eras of the Universe according to the Big Bang Theory. Click the picture for many more details and a larger image. The one line in the article that caught my attention the most was at the end.
“One important point is that since everything that we learn about the Universe comes from light (photons), if there are no photons there is no information. Thus, before the end of the era of nuclei, we have no information since the photons were trapped. We will never see this era of the Universe with photons, but maybe gravity waves (?).”
That is a point that has been bothering me. Since we can’t “see” most of the Universe why do some (not all) scientists cling so tightly to one theory to the exclusion of all others? Isn’t it possible the standard model is wrong? Or, Isn’t is possible string theory is wrong? or M-theory? or even the Big Bang Theory? People use to think the theory of a geocentric universe was true. We agreed to get over that. Well, most of us did. I am just saying Science is about keeping an open mind about the facts. And the facts are, at the moment, most of the Universe is still invisible.
July 23, 2010 § Leave a comment
“The enormous stars in the [Tarantula]nebula are producing intense radiation and searing winds of multimillion-degree gas that carve out gigantic bubbles in the surrounding cooler gas and dust. Other massive stars have raced through their evolution and exploded catastrophically as supernovae, expanding these bubbles into X-ray-brightened superbubbles.” Read full story
July 17, 2010 § 6 Comments
Ways YOU can help save the world from home without getting off your ass.
You may say “People should get off their ass to help!” My response is: Unfortunately, not all of us can. Whether they be physical, financial, social or just plain weird sometimes circumstances make us feel useless and trapped. Helping others is the best way to feel better about your own life. All of the examples I have listed below are free, easy, fun, educational and cool. You will soon forget started doing it to help others. In fact by doing these things you are really helping yourself.
- Join Zooniverse :
- Explore the Moon in unprecedented detail using images from NASA’s Lunar Reconnaissance Orbiter.
- Help astronomers figure out how galaxies form and evolve by classifying their shape. Now with added Hubble galaxies.Help spot explosions on the Sun and track them across space to Earth. Your work will give astronauts an early warning if dangerous solar radiation is headed their way.Help us to catch an exploding star – astronomers are ready to follow-up on your best candidates at telescopes around the world.
- How do galaxies merge? Help us find out by visiting Galaxy Zoo Mergers – Explore, Enhance, Evaluate.
- Join World Community Grid– Donate the power of your computer when it is turned on, but is idle, to projects that benefit humanity! They provide the secure software and system that does it all for free, and you become part of a community that is helping to change the world. Once you install the software, you will be participating in World Community Grid. It’s that simple!
- Once you have the software installed for Wold Community Grid, you can attach to other projects like: LHC@home is a volunteer computing program which enables you to contribute idle time on your computer to help physicists develop and exploit particle accelerators, such as CERN’s Large Hadron Collider and SETI@home is a scientific experiment that uses Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI). You can participate by running a free program that downloads and analyzes radio telescope data.
- TIP: You can run SETI@home and LHC@home on the World Community Grid Platform but not vice versa. So sign up for Wold Community Grid first.