Wednesday, 30 December 2015

Experimentor_4u Says It’s True, Water is on Mars

The argument of whether or not life could exist on Mars could be coming to an end swiftly, with recent observations made by a new spectral analysis captured by the Mars Reconnaissance Orbiter. There is no question that Experimentor_4u is alongside every new development. While little green men aren’t the focus of the biological discoveries being made, there is a chance that there could be, at the very least, microbial life occurring somewhere on Mars - many online sites, including Experimentor_4u’s Facebook page, will regularly update their site with the latest news and discoveries concerning Mars and other scientific discoveries. For years now, there have been images that have been received, dating as far back as the 70’s, where there is a clear view of a wide variety of striations and canyon slopes. These formations look identical in nature to the many different geographical responses that have transpired on Earth over a period of centuries. But just because there seemed to be visual evidence that water had once been on Mars, it did not prove that there was water at present, let alone the capacity to support any type of life.

Experimentor_4u

The discoveries piqued the interest of scientists and NASA research teams enough to perpetuate further surveys of the surface of Mars. Over the past ten years, scientists have been able to find more evidence that something was certainly flowing across Mars at one point. But the question remained as to whether or not water was still there. With the pursuit of more documentation firmly underway, more images returned that demonstrated that water was not only once present on Mars, but that it still was. NASA’s Mars Global Surveyor actually returned images that looked just like water breaking through the surface of Mars and flowing across the surface of large boulders and the rocky terrain that we had come to know Mars to be.  

Science Takes Evidence

However, scientists were reluctant to investigate further and make claims about what they were seeing on the black and white images received on Earth. There was still a chance that what they were seeing was merely a projection of their own hopes and expectations of what could possibly be the beginning signs of life on Mars, or at least the potential for it. More data was needed.

Enter a spectrometer aboard the Mars Reconnaissance orbiter. For the first time ever, scientists were able to capture the spectral signature that determines whether or not water was actually present. The process involved determining whether or not there was the presence of certain salts, known as hydrated salts, which are clear indicators that water actually exists. This sort of inspection just wasn’t possible through the images that previous Mars expeditions were able to capture. But now the images have returned to the inquisitive minds at NASA and what they have found is completely revolutionizing the image of Mars that has long been held as a completely dry and rocky terrain.



Not only were scientists able to determine that there actually is water on Mars, they are realising that this water has some interesting characteristics. The biggest one is based on the fact that the surface of Mars is extremely cold, yet the water on the surface begins to flow when temperatures reach around -23 degrees Celsius. This is considerably lower than the temperature on Earth.  

What Does Water On Mars Really Mean?

The presence of the water is simply a foundation set for further discoveries. Scientists have learned that there are still many different possibilities to explore, to determine the full scope of the history and the current state of the ecological life on Mars.

For starters, there is now clear evidence that there were large lakes that once existed on the surface. The spectral analysis returned information identifying where water had been, as well as where it is flowing now. Scientists can now fully hypothesize that Mars at one point had a much richer biosphere that included oceans, mountains, clouds, and the possibility of life.



Because that is not the current state of Mars, it is clear that something happened previously that to take its toll on the atmosphere. Unfortunately, there may not be a way of identifying exactly what caused such a large shift in the planet’s capacity to maintain an ecosystem. Scientists are much more prone to be conservative in expressing their speculations until further evidence is obtained – this is simply the regular process during scientific discovery. First they need the evidence, and then the claims can be made. Even now, scientists are exploring different possibilities with regards to how the water actually got there.

As scientists continue their miraculous discoveries, Experimentor_4u is tuned in and watching fervently. Limitless possibilities are on the path ahead.

Wednesday, 2 December 2015

What is a Wormhole?


The idea of a wormhole was first proposed by the great Albert Einstein in 1935 along with Nathan Rosen, his then colleague. The duo realised that within the general theory of relativity there was a possibility of there being ‘bridges’ that could connect two different points in space-time and therefore create a ‘shortcut’ from one point in time or space to another, reducing both distance and time taken to travel. As shown in the attached PDF document, while researchers are yet to conclusively prove the existence of wormholes there are valid solutions to equations of the general theory of relativity that do contain wormholes.



As described by Einstein and Rosen, wormholes would consist of two ‘mouths’ connected by a tunnel or ‘throat’. The mouths or openings would most likely be spheroidal in shape, while the tunnel or throat may be straight or may wind around, ultimately taking longer than a conventional as-the-crow-flies route. Within the general theory of relativity Einstein has predicted mathematically the existence of these wormholes, although to date none have ever been found. These wormholes could be observed due to the effect they would have on the passing light caused by the gravity of a negative mass. Some general relativity solutions allow for wormholes to exist where each mouth is actually a black hole, although naturally occurring black holes do not by themselves create wormholes.  

The reality of travelling through a wormhole even if we did happen to discover one is far more complicated than popular science fiction makes out. Firstly, the predicted wormholes as posited by Einstein and Rosen would be incredibly unstable and collapse after only a short period of time. Secondly, size would be a definite issue as primordial wormholes are predicted to be only about ten to the power of minus thirty-three centimetres – microscopic proportions. However, as the universe is expanding it creates the possibility that some wormholes may have stretched along with it. There is also evidence to suggest that wormholes containing ‘exotic’ matter, or matter with large negative pressure and negative energy density, could stay open for much longer. To this point exotic matter has only been observed as part of quantum field theory in the behaviour of certain vacuum states. Theoretically, if a wormhole was large enough and contained enough exotic matter it could be used to send information, objects or even human travellers not only though space but across multiple universes. Certain scientists have also conjectured that time travel would be possible if one mouth of a wormhole were manipulated in a specific manner. However, the possibility would be fraught with risk as there would still be a good chance that the addition of ‘regular matter’ such as a human into the stabilised wormhole could be enough to de-stabilise it once more.  

Even if we could solve all the theoretical issues surrounding the idea of wormholes and even if we did manage to discover one, the technology we have access to today is insufficient to either stabilise or enlarge a wormhole. However, scientists including Experimentor_4u remain fascinated by the concept and many hope that one day the technology will become possible.