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crazyloui
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How can we see light from 400K years after the big bang? Are we older than this light? Did we travel faster than this light, away from the big bang?
crazyloui said:How can we see light from 400K years after the big bang? Are we older than this light? Did we travel faster than this light, away from the big bang?
Physics_Kid said:marcus,
every object with mass has "gravity" no matter how far away objects are from each other? this seems to imply that all mass pulls all mass towards each other. if time is infinite doesn't this mean that at some time in the very distant future all mass will eventually unite at some point in space? wherever that may be we would expect to observe what we believe as a classical big bang event?
Physics_Kid said:i myself do not believe our classical big bang theory of all mass at a single point. i believe the big bang was nothing more than an event in time where an exchange of energy occurred, whether from fabrics of parallel universes touching, or just from a crap load of mass coming together, it wasnt all mass at a single point..., and the big bang was not the beginning of time, but rather an event in time...
Physics_Kid said:Cosmo Novice, my bad, i meant to say hypothesis.
i am trying to simplify the already existing theories which seem odd and overly complex, like big bang where all mass is at a single point which is also the start of time... that seems a tad odd to me.
Physics_Kid said:it makes more "sense" to me that the "big bang" was just some event in time, a timeline that is infinite in the past and future. if we can place a time on the big bang event, and we observe distant light that seems older than the big bang event, then it may be probable that not all mass in the universe was at the big bang event.
Physics_Kid said:Cosmo Novice, my bad, i meant to say hypothesis.
so with a notion of time being infinite in the past, and the big bang was just an event in that time, then it is possible we can observe light which is older than the big bang event.
JLA727 said:How can the BB have been the beginning of Space itself? If nothing existed before that, isn't nothing just and endless empty void? hmmm.that is a mind boggler!
An "endless empty void" is still space. The BB cosmology has the size of the universe at zero at the t=0 event. The BB didn't "fill" space it created space.JLA727 said:How can the BB have been the beginning of Space itself? If nothing existed before that, isn't nothing just and endless empty void? hmmm.that is a mind boggler!
jambaugh said:The BB cosmology has the size of the universe at zero at the t=0 event...
...before t=0 singularity we can't really say anything meaningful until we can improve our theory.
The Big Bang theory is a scientific explanation for the origin and evolution of the universe. It proposes that the universe began as a singularity, a point of infinite density and temperature, and has been expanding ever since. The expansion of the universe is what allowed for the formation of light, as the hot, dense early universe cooled and expanded, allowing for the formation of atoms and the release of photons.
The cosmic microwave background (CMB) radiation was discovered in 1964 by Arno Penzias and Robert Wilson. It is a faint glow of electromagnetic radiation that permeates the entire universe and is a remnant from the early stages of the universe. The CMB provides strong evidence for the Big Bang theory and supports the idea that the universe was once extremely hot and dense, as it is consistent with the predictions made by the theory.
The formation of the first stars, known as Population III stars, played a crucial role in the origins of light. These stars were much larger and hotter than modern stars, and their high temperatures allowed for the fusion of hydrogen and helium atoms, producing light. This light was then able to travel through the universe, allowing for the first light sources to exist.
By studying the light emitted from distant galaxies and quasars, scientists can gain insight into the early universe and the origins of light. The light from these objects has traveled for billions of years, allowing us to observe the universe as it was in the past. This has allowed scientists to study the evolution of the universe and the processes that led to the formation of light.
Understanding the origins of light is crucial for understanding the evolution of the universe and our place within it. It also allows for the development of new technologies, such as telescopes and detectors, that enable us to study the universe in greater detail. Additionally, studying the origins of light can help us answer fundamental questions about the nature of the universe, such as the existence of dark matter and dark energy.