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Cosmology

Parent Category: Physics
Cosmology is the area of physics that studies the universe in and of itself. Through the use of incredible and ingenious methods of experimentation, cosmologists attempt to discover how the universe began, how it is developing, and how or if it will end. Questions regarding the Big Bang, dark matter, dark energy, the cosmic background radiation, and the initial formation of the fundamental particles can be placed into this category.
1 AMU Neutron is the same electron is almost 0
Protons and neutrons are called hadrons. A hadron contains three  quarks. Quarks come in 6 flavors (types). These types are up, down,  top, bottom, strange, and charmed. (The names are completely  arbitrary.) A proton contains two up quarks and one down quark  while a neutron contains one up...
Electrons are a type of fundamental particle known as a Lepton.  Protons how ever are made up of quarks. A proton has a quark  structure of up, up, down (UUD). The up quark has a charge of +2/3  and the down has -1/3 which gives the proton its overall positive  charge. The up and down quark both...
He would have likely agreed with classic Newtonian physics. Look up  the string theory. It makes Einstein's absoluteness belief and  quantum mechanics' relativity ideas converge together.
yes we have various isotopes on the difference in the number of  neutrons
yes, cathode rays are streams of electrons
it depends on the element and isotope 
Quarks are considered to be fundamental particles, and as such they do not really have a classical "size". Their masses can be compared, however, and they are not the same for all types of quarks.
try to get your enemies planet pristeige below -1000% then the planet label will turn yellow, therby showing you are forbidden from that system.
The Earth is. It has all these things crawling and moving near its  surface.
First of all, there's two theories of relativity. The one on normal  relativity which indicates that an object that is moving very fast  will experience less time than one that is stable. The one on  special relativity indicates that the more gravity an object is  putted into, the less time it...
There is no real planet Krypton; nor an imaginary Krypton as it  blew up as Kal Els parents flew him away to earth in a small  spaceship.
Light causing electrons to be released from the surface of a metal.
The number of protons in an atom is its atomic number.
The planets in our solar system are not always visible to an  observer on Earth, for various reasons. Daylight reduces the  visibility of planets significantly. Mercury and Venus, since they  are inside the orbit of Earth (closer to the Sun), could only be  seen in favorable conditions near...
A proton has a charge of +1 and an electron has a charge of -1.
Protons,Neutrons, and Electrons. Which are all inside the nucleusof the atom.
It really depends in which atom you're talking about. because a  hydrogen atom which it's atomic number is 1 has 1 electron, 1  neutron, and 1 proton; the helium atom, has an atomic number of 2,  the nitrogen atom of 7, and Unumquadium of 114, meaning that  Unumquadium has 342 subatomic...
Because it does not have enough mass to crush itself with it's gravity.
elecron can move from atom to atom...yes
The nucleus which includes the protons and neutrons, and the  electron cloud which contains the electrons. If you want to get  into true quantum mechanics, then there are the quarks, the  leptons, the bosons, gluons, etc.
This process of decaying is called a beta decay. The produced proton remains in the nucleus and the electron is released from the atom.
TWO types of subatomic particles?? Gosh, the basics are the electrons, neutrons, and protons. Then you add muons, gluons, 6 quarks and so on, and you come up with many particles. And that's just for matter.If you consider anti-matter, you have positrons, anti-protons, anti neutrons, etc etc etc.
Tritium, a radioactive isotope of hydrogen.
The location of those lines would be shifted to a longer wavelength (or lower frequency or energy) -- ie, towards the red part of the visible spectrum. In other words, a red shift.
  Cesium has 55 electrons.
Nothing. The distortion of space and time within a black hole's  event horizon is so extreme that the only possible direction of  movement is further inward.
The electrons come from water.In the light dependent stage water is split into hydrogen ions (H+), electrons and oxygen.The electrons are passed on to chlorophyll, the H+ ions combine with NADP to form NADPH and the oxygen is released.
Sure, if it gets close enough, it might. By the way, any other object of sufficient mass could also "suck" the Sun if it gets close enough.\n Sure, if it gets close enough, it might. By the way, any other object of sufficient mass could also "suck" the Sun if it gets close enough.\n Sure, if it...
The number of protons in a nucleus depends on the element. Hydrogen has 1 proton, helium has 2 protons, and lithium has 3. All elements have different numbers of protons in the nucleus. If you look on a periodic table, each element has an atomic number. That number is the number of protons there is...
A planet is too large to sit on a moon.
  A neutron. They're about the same size
What you are seeing is an absence of light. You distinguish a black objects presence by its lack relative to other things.
The Big Bang theory predicts an expanding universe. The red shift, being the Doppler effect of light when something is receding from you, confirms this because when looking at galaxies the light emitted from them is red shifted. The farther away galaxies have a higher red shift, confirming that all...
Sunspots do not explode, sunspots are cooler regions of the Sun's surface caused by what are basically magnetic field "tangles" stopping the convection that brings heat to the solar surface. When the "tangle" untangles or snaps back the Sunspot fades away as that bit of the surface heats back up....
Big Bang Cosmology does NOT state that the mass of our Universe  exploded from a single point into empty space. Rather, it states  that the density of Universe has been decreasing at a (more or  less) constant rate over the last 13.77 billion years or so, due to  an EXPANSION of space itself. ...
In our solar system, the outer planets, all referred to as gas  giants, have no solid outer surface at all, their entire outer  envelope is gas; any artifacts visible on them are attributed to  local changes in composition or weather effects. Jupiter, Saturn,  Uranus and Neptune are all believed...
usually it is the second to third layer of electrons. it depends on what atom ur talking about, some atoms (like magnesium) have 3 electron levels; when some atoms (like gold) may have over 7 levels of electrons. it sometimes has to do with the atomic number
A planet that has an orbiting ring around it is saturn although  there are many other planets with rings saturn has the largest  ring!! Fun fact jupiter also has a ring but its to clear to see it  in any pictures!
In our solar system, because of the lack of moderating effect of a  thick atmosphere, and its proximity to the Sun, the planet Mercury  has the largest temperature range between the day and night sides.  The side facing the sun gets as hot as 430 C, the side facing away,  as low as -173 C.
these element has 2 electron in the valence shell and is magnesium  of group 2
Your question is not clear. A current is generated when a group of  electrons flow through a conductor, and this happens when there is  a potential difference between the 2 ends of the conductor.   If you want to know how can we start the flow of electrons it is by  creating a potential...
not every star can turn into a black hole, because it has to meet a certain size to do so. our sun will not turn into a black hole, how ever, it will destroy our planets. many stars can turn into black holes, but only when it meets the end of its life which is when it stops burning gas.stars have to...
It has to do with entropy. The law of entropy states that the universe tends toward having the lowest possible energy at every point. Two oppositely charged particles' magnetic fields cancel out, so, to follow this tendency, they attract each other to have more of their fields overlapping, and so,...
Main points of the big bang: Everything started from one small point in space billions of years ago. This tiny space is thought to be smaller than a mm and had all the elements in it. Then there was a big explosion. This explosion caused and is still causing the Universe to constantly expand -...
Hydrogen peroxide is H2O2, so each hydrogen has 1 proton, and each  oxygen has 8 protons: (1 x 2) + (8 x 2) = 18 protons in each  molecule.
The planets are boys and girls because they were named after some important people.
It depends on how much energy it has
No they do not. All matter in a black hole is crushed into a single point called a singularity. A point does not have any dimensions so there is no bottom. Or even a top for that matter.
Planet Earth has a radius of about 3,960 miles.
What should the reaction, if we connect the positive and negative pole of any electric plug at our home? The result should be a spark (kind of mini blast) and finally some energy should be convert into Carbon. In the same process if the electric voltage (both, positive and negative) is too much high...
Mass Number Protons and neutrons are collectively called called nucleons. The number of nucleons (protons plus neutrons) in the nucleus of an atom is called the mass number. For example, Lithium has 3 protons and 4 neutrons in its nucleus. It's mass number is 7 (3+4). The mass number usually goes...
Quarks are fundamental particles, and three of them make up the particle group we call the baryons. The two common baryons we encounter are the proton and the neutron, which are composite particles made of of three quarks each. The proton is composed of two up quarks and a down quark, and the...
Yes. According to Einstein, the mass of an electron can be converted into energy, which will then dissipate. The famous E=mc2.
The mass of a proton is 1.672 621777(74)x 10 to the power of -27, in grams.  
First, you got to understand something. A black hole is just as a  block of ice. The smaller it is the faster it melts. So speaking  scientifically the black hole releases radiation relatively faster  when its smaller than when it's bigger, which heats up the dead  star. For that reason the...
Mainly hydrogen; also some helium, and small amounts of lithium. Heavier elements (the so-called "metals") were formed later, in stars, through fusion. It is thought that initially there were no chemical elements as we know them. The lighter elements mentioned above came into being after the big...
yes, many think that dark matter isn't affected by regular matter, so it can simply pass through at high speeds.
The names of moons Titan, Tethys, Titania start with "t".
The chemical nature of the substance. The rare earths all have a similar 'outer shell', and differ only in their 'inner shells', hence the similarity of many of their properties.
Elements are defined by the number of protons in the element. Atoms with 4 protons are always Beryllium. 5 neutrons means that the atom has a mass number of 9. So the nuclide is Beryllium-9
A black hole consists of three main parts: The Accretion disk, (outer edge made up of hot gasses/rock etc). The event horizon (the part that looks as though it it a huge black hole, this is because the parts moving into it are moving faster than the speed of light so you cannot see the past this...
A Gluon - the force-carrying particle of the strong nuclear force.
Neutrons is the heaviest particle, because it contain both electron and proton . We know mass of the proton is (1.672623 X 10-27 kg) 1840 times heavier than that of electron mass (9.109390 X 10-31 kg). On comparing proton and electron we get a new idea that neutron (the neutral particle) have both...
The basic idea is that elementary particles are not point like, like the Standard Model assumes, but are instead tiny strands of energy. If you want to know more about String Theory there is a very good documentary which you can look for free on the internet. It should be understandable to the...
J.J Thompson discovered the electron during his famous cathode ray  tube experiment in 1897, but it was actually Niels Bohr who  discovered the electron shell (by accident), performing an x-ray  experiment in 1909.     
250,000 times. This is 125 times the magnifying power of the light microscopes.
The inner planets, also known as rocky or terrestrial planets, do  not have significant ring systems.
In our solar system, Earth is the only planet with any significant  amounts of surface water (and land).
A neutron star is composed primarily of neutrons, according to theory. This extremely dense star is formed when a star explodes in what is called a (Type II, Type Ib, or Type Ic) supernova.   A link to the Wikipedia article on the neutron star is provided.
A black hole can have an electric charge if it swallows electrically charged objects, but no objects that we know of have magnetic charge. Magnets always have both a north pole and a south pole; there is no evidence that one can exist alone. A lone north or south pole would be called a magnetic...
go to http://www.uscollegesearch.org/astrophysics-colleges.html and there's a huge list of good colleges if you want to go into astrophysics.
The Earth is terrestrial, inner, or a "rocky" planet, as opposed to  being considered an outer planet or gas giant. The term  "terrestrial" means Earth-like.
The consideration for whether our universe is one of many depends on one's determination of what the universe means to them. It could be said that our universe is  unique because its very determination is built upon the evolving consideration of a reality within the dimensional degrees of...