Astronomy and Cosmology

The Hubble Telescope has shown that in the darkest places of the Univerce there are old Galaxies!!!... So, is the Black Night Sky only an Illusion of our Eyes???... ( IF we had Eyes like the Telescopes would the sky be full of sunlight???...) Thank You...

Constant Space December 30, 2017 "Dark matter" and/or "dark energy", seems that is a next in thinking about the whole "universe". Many very intelligent people who study such things are spending a lot of effort, time, and human energy in trying to find out what is this invisible matter, or force, particle, energy, etc. And, if this invisible thing is discovered, then how does it fit in with the BB theory and other ideas as to how the whole universe and all of its "matter" came into being? I'm not a physicist, but I love to read about cosmology, its physics, and ideas about where everything may come from. There are some who think that this dark matter …

---- Please excuse my ignorance but I’m what you would call a mathematical illiterate. For a while now, I have pondered upon the origin and Big Bang of the Coamic egg and each time I perceive before rapid inflation, a white holes creation. This white hole being dense warped space and time ... Dark Matter was also encapsulated at cosmic origin, and unlike the white hole, sealed by an super symmetric electro magnetism... the fields of dark matter and the white hole converge and repulse each other spawning Dark Energy... Not only is it an expanse of space but the entropy of white hole energy is at scalar 0 while it expands... energy at all scalar 0 in expanding/warp with…

Hello! I'm an amateur researcher. I would like to hear, what can you say about a model, which I've made and which explains the interaction between space weather and circulation of airmasses in the atmosphere. I've tried to base it only on officially approved knowledge, but as I am just an amateur, I would love to hear some professional opinion. Model is based on the laws of magnetohydrodynamics (MHD) and supported by scientific publications. Shortly speaking, orientation of IMF sector determines the direction of current during a process, known as flux transfer event (fte). Flux tubes form along open magnetospheric field lines and create a physical pressure on atmosphere …

https://phys.org/news/2017-12-scientists-solar-giant-star.html Scientists describe how solar system could have formed in bubble around giant star December 22, 2017, University of Chicago Despite the many impressive discoveries humans have made about the universe, scientists are still unsure about the birth story of our solar system. Scientists with the University of Chicago have laid out a comprehensive theory for how our solar system could have formed in the wind-blown bubbles around a giant, long-dead star. Published Dec. 22 in the Astrophysical Journal, the study addresses a nagging cosmic mystery about the abundance of two elements in our solar sys…

Can we stop using the name “Dark Matter” for the name of the unknown force that induces the extra motion of stars around a galaxy or induces the paths of galaxies to follow paths of intergalactic tendrils and instead call it by all we know is true in that there must be a Dark Force that induces those properties in the Universe?

I saw an article on the internet within the past week about a scientific paper that was published on November 22 in the Astrophysical Journal by Swiss astrophysicist André Maeder, raising the question does Dark Matter really exist and proposing an alternative theory to fit the observations, interesting, see: https://www.space.com/39001-dark-matter-doesnt-exist-study-suggests.html?utm_source=sdc-newsletter&utm_medium=email&utm_campaign=20171208-sdc And on the subject of Dark Energy, is it real or is there something fundamentally wrong with the assumptions. What was the exact methodology that the astronomers used to conclude that the expansion of the univ…

I realize that this is probably not the best forum to ask this question, but I thought some of you might know the answer.

The interactive model can be found at: Action Dynamics of the Local Supercluster Interactive Model Source: Action Dynamics of the Local Supercluster - The Astrophysical Journal, Volume 850, Number 2, December 2017 (free preprint)

Why is it not just E=mc? Why is the equation Squared?

In about 4 billion years, these two spiral galaxies will merge together to form one big, much more massive, elliptical galaxy. How will other galaxies in the universe react to this (gravitationally)? Are there any other big collisions scheduled to occur?

Does the law of conservation of energy mean that all photons and matter particles that exist in the universe right now have, in one form or another, always been around from the Big Bang on (only closer), and there will never be an increase in the amount of energy/mass? Doesn’t dark energy contradict the law of conservation of energy?

https://www.ligo.caltech.edu/WA/news/ligo20171115 Scientists searching for gravitational waves have confirmed yet another detection from their fruitful observing run earlier this year. Dubbed GW170608, the latest discovery was produced by the merger of two relatively light black holes, 7 and 12 times the mass of the sun, at a distance of about a billion light-years from Earth. The merger left behind a final black hole 18 times the mass of the sun, meaning that energy equivalent to about 1 solar mass was emitted as gravitational waves during the collision. more at link....

A new study finds a very calm and defined spiral galaxy 11 billion years old: http://zeenews.india.com/space/scientists-discover-most-ancient-spiral-galaxy-2054481.html. Does this finding present a challenge to the 13.8 billion year age of the universe in terms of the general view that it takes far longer for this kind of spiral galaxy to form through normal gravitational processes?

I would be grateful in some review of the following paper could be given by those with the required level of expertise on the subject. I believe in this day and age, after recent observational discoveries that BHs are pretty well beyond doubt. Not though according to this paper and its initiator. Would those that are able to invalidate his concepts in the paper, mind if I transpose their answers to the person concerned and in that forum? Your name and handle of course will not be used, just your reply. Thanks to all taking the time to review this...much appreciated. https://www.academia.edu/34549343/Gravity_causes_release_of_Energy_in_Neutron_Star Grav…

We seem to have a lot of 'evidence' of the universe being 13.8 billion years old, with some people believing it could be younger. Are we talking about the age of the matter in the universe, or the age of the Universe. When the BB occurred time did not exist. Time began some period after BB but the Universe came into existence as BB occurred. If the originating stuff that created(?) BB was spinning then the universe would not be spherical. Possibly like a spiral? Or even donut shaped. Or could it be spherical but with an area of nothingness surrounding the place where the BB originated as all the matter was ejected? I'm being devils advocate to start …

https://phys.org/news/2017-11-star-survived-years.html Star exploded, survived, and exploded again more than 50 years later November 8, 2017 It's the celestial equivalent of a horror movie villain—a star that wouldn't stay dead. An international team of astronomers including Carnegie's Nick Konidaris and Benjamin Shappee discovered a star that exploded multiple times over a period of 50 years. The finding, published by Nature, completely confounds existing knowledge of a star's end of life, and Konidaris' instrument-construction played a crucial role in analyzing the phenomenon. In September 2014, the intermediate Palomar Transient Factory team of…

Though we all know that Halton Arp gets no respect among mainstream cosmologists, despite his background and pedigree working with Hubble, I'd like to know if anyone here can help with debunking or supporting one of Arp's key arguments for a very different kind of cosmology. In his 2003 book, Seeing Red, he describes strings of galaxies and related objects in both Virgo and Fornax with anomalous redshifts, but anomalous in a patterned way that suggested to him that the central galaxy in each string was a parent galaxy that ejected the higher z value galaxies to each side in pairs that then disperse over time and give birth to their own galaxies. I know this sounds very we…

I am trying to figure out how these forms of matter are supposed to work but I can't even figure out why we know about them or think we do. I do understand that galaxies appear to be moving away faster than expected but I don't understand why that's relevant. Any good reading on the matter (ahem) that a lay-person could understand?

A new video animation of dwarf planet Ceres, based on images taken by NASA's Dawn spacecraft, provides dramatic flyover views of this heavily cratered, mysterious world. The images come from Dawn's first mapping orbit at Ceres, at an altitude of 8,400 mile (13,600 kilometers), as well as navigational images taken from 3,200 miles (5,100 kilometers) away. The images provided information for a three-dimensional terrain model. The vertical dimension has been exaggerated by a factor of two, and a star field has been added in the background. Any discussions and/or peer reviews about this specific topic thread? Fly over dwarf planet Ceres: https://www.youtube.com/embed…

How can a sound wave propagate in the near vacuum of celestial space?

Modern astronomers use parallax to determine the distance to a star. Parallax is based on the stars of the stellar universe that are stationary where the change in the angular position of a stationary star is measured after the observed on the earth propagates the distance of the earth's orbital diameter (six months) but the distance to a 4.22 light year (4 x 10^16 meters) star is more than 10^7 times larger than the earth's orbital diameter (1.4 x 10^10 m); consequently, the parallax reference distance of the earth's orbital distance is to short of a distance to produce a change in the angular position of a stationary 4.22 ly star using the Hubble that has a resolution o…

Is there anything unexpected that could arise from 2 BHs colliding at speed? Would this just be another form of a Black Hole merger or would this be a (obviously just a thought experiment) way of breaking up the Black Holes and liberating what has accumulated inside ? I realize the concept seems ridiculous (I actually hit the submit button too soon and by mistake and so had to continue with the post) but what is the answer (can it be said?)

ESTIMATE THE SIZE OF OUR UNIVERSE USING DATA FROM COSMIC EVENTS.pdf ESTIMATE THE SIZE OF OUR UNIVERSE USING DATA FROM COSMIC EVENTS Assumptions: 1. Our 3-D universe is on the surface of a 4-D globe. 2. Gravitational wave travels within the 4-D globe at speed of light. 3. Gamma-ray, as well as other electromagnetic waves, travels along the surface of the 4-D globe. As illustrated above, X is the distance of the cosmic event; R is the radius of our 4-D globe; C is speed of light; t is the time difference between detection of gravitational wave and gamma-ray. X – 2R*sin(X/2R) = C*t On 8/17/2017, gravitational …

Does a binary black hole merger have an em signal? Might this latest observation bring closer capturing a binary black hole merger using that em or optical signal?