Weighing Heavily in the Darkness
- Author Phillip Vales
- Published September 19, 2010
- Word count 586
Scientists are in the process of confirming the existence of an esoteric substance called
‘Dark Matter.’ This is an ethereal primordial material that permeates the universe and is
more ubiquitous than the more mundane protons, electrons and neutrons that are more
familiar to most people.
Several scientists have endeavored to create a novel and unique perspective of the
universe hitherto unimagined in other scientific circles. Dr. Ignacio Ferreras of London,
Dr. Prasenjit Saha of Switzerland and Scott Burles of MIT used a novel technique to
discover a great deal of details about mysterious substance known as ‘Dark Matter.’
Scientists have known for some time that a distortion effect is set up by a massive object
in the path of an extremely remote powerful light source. The light approaching such an
enormous object or groups of objects such as a closely associated group of galaxies is
skewed in such a predetermined fashion properties related to the origin of the light can be
estimated. This effect of the bending of light as a result of the proximity of enormous
gravity wells is known as ‘Gravitational Lensing’ and is predicted by the Theory of
General Relativity.
Ferreras, Saha and Burles were attempting to organize a galactic perspective on the
distribution of dark matter in the night sky. In fact, it would be most appropriate to state
that they were creating a map of this unique phenomenon at a distance of several billion
light years. The term light year, for those that do not know, refers to a unit of distance
not time as is first implied. More particularly, it refers to the distance that light travels in
one year. Given the incredible velocity of light, several billion light years amounts to an
extremely remote observation point. Given the incredible distances involved, this
prediction truly tested the extreme limits of technology until it was confirmed in the late
20th century.
Upon observing the images received from such sources, the objects appear distorted in
such a fashion that arcs, multiple images or similar type of effects can be detected in an
observed source. All of these of course are dependent upon the locations of the source of
the light, the gravity well or ‘lens’ and the observer’s position relative to the
aforementioned. Other factors play into the distortion effect received at the observer’s
location including the nature and shape of the ‘lensing’ object. It should be noted that
there are several types of ‘lensings’ that are used to determine various statistically
important facts relating to light sources.
The first is known as ‘weak lensing’ and is found using advanced manipulation of the
observational data taking into consideration the various other objects that can affect the
observed object’s light. Next, in ‘microlensing,’ the amount of viewable light changes
with time even though there is no specific detectable change in an object’s geometry.
The third type of lensing takes the form of multiples representations of the distance object
under observation as well as arcs and annular images of the object. Equipped with all of
this technological knowledge and in a profound and exotic analysis of information the
team gleaned valuable data from the Hubble telescope and hashed it together with
galactic light from theoretical predictions. The effective result is a stellar cartographers
dream – a chart of dark matter billions of miles away in the eternal cold of space. It is
hoped by the trio that the data collected and sifted so assiduously will aid the
understanding of galactic evolution.
Phillip Vales is an engineer and patent agent. To contact the author visit: patent attorney or patent
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