How many atoms are in the entire cosmos?
952552
assume 10^11 stars in 10^11 galaxies at 2x10^33 grams each per star and ~4.6x10^23 atoms/gram (remember, the uni is 10% helium).  This'll get you within an order of magnitude or so.\n\nNote that this is number of ATOMS which appear to represent perhaps only about 5% of the total mass of the universe, most of the rest being dark matter (25%) and dark energy (~70%).
461
Without checking astronomical data, I'll try the chemical approach:\n\nThe most abundant elements in the universe are hydrogen (with a big lead) and most of the other light elements, so we have to look for the most probable triatomic molecule we can form from light elements.\n\nThis makes H2O my prime candidate, being the most stable molecule to contain two hydrogen atoms. HCN or CO2 have a much lower probability. SiO2 is pretty abundant, but not as distinct molecules.
1006929
Seriously, this is funny. Anyhow, there is absolutely no way of knowing how many planets exist in the entire universe as the universe as we know it is far to huge for any of our technology to fully explore. \n\nAnyhow, please stick with the topic. This has absolutely NOTHING to do with computers.\n\nThanks!
1159688
The density, the atomic structure, and the state of matter it is in.
365377
atomic number represents the number of protons or electrons in an atom
181392
Bound to the Earth, thousands!  In the Solar System, thousands!  In our galaxy, millions!  In the universe, billions, trillions, sextillions, maybe even infinity!
942071
God - 2.6 billion\nSatan - 3.4 billion\nRhapsody - At least one.
271980
The Earth is in the Solar system, the solar system is in the Galaxy and the galaxy is in the Universe AKA outer space. The answer to your question is not known, some say the Universe is the end of that line, stuff is made of atoms, atoms are made of protons, neutrons and electons, protons, neutrons and electrons are made of quarks, which are made of (I think) gluons, huons and mesons. I think that their is another universe, say a ten or eleven dimensional universe, that holds infinitely more four dimesional universes, like ours, this is part of string theory.
295233
there are as many as 200 billion galaxies in the observable universe
564573
A bond between 2 atoms is about 2-3 Ångströms, i.e. 0.2-0.3 nm. So there would be about 5 atoms in a 1 nm chunk of a molecule
910482
I do not know since I haven't read the book. But I have come across a web page that explains the numbers as such:\n\nThe first number is Ν (nu), and it is huge. It measures the strength of the electrical forces that hold atoms together, divided by the force of gravity between them.\n\nAnother number is Ε (epsilon), whose value is 0.007. This defines how firmly atomic nuclei bind together and how all the atoms on earth were made.\n\nThe cosmic number Ω (omega) measures the amount of material in our universe. \n\nThe next number is the cosmological constant, Λ (lambda), which measures the cosmic repulsion. Our existence requires that Λ should not have been too large.\n\nHow tightly stars and galaxies are held together can be expressed as a ratio between the force of gravity and the amount of energy needed to disperse them. This ratio is the fifth number, Q (Q, of course).\n\nThe sixth number is the number of spatial dimensions in our world, Δ (delta).\n\nHope this helps.
309704
Approximately 193,000 atoms thick
5355
No one knows.\n\nThere are about 10 planets in our solar system, depending on whom you ask.\n\nAround 100 planets have been detected in other solar systems.\n\nThere are at least 200 billion stars in the Milky Way Galaxy (ours).\n\nIf the average number of planets per star is 10, then there are 2000 billion or 2 trillion planets in our galaxy.\n\nNo one knows how many billion galaxies are in the Universe.
773398
Gosh.  A sensible question, and you have to put up with fourteen completely dumb-cluck answers until one that is actually CORRECT.  The number of elementary particles in the universe is quite a modest number, and well-reasoned estimates of around 10^80 give or take a factor of 10 have been around for nearly a century.\n\nMost of the Universe is hydrogen, so troothskr's 2 x 10^79 hydrogen atoms converts to 4 x 10^79 particles.  Adding photons, neutrinos, and dark matter, it is still unlikely to exceed 10^81.
1116812
The paper cited below says "It is the rarest element with an amount of only 550 g. in the entire earth's crust,"\n\nThat's a little more than 18 atoms.
515033
The most abundant element in the universe is hydrogen.  Nebulae are made up most of that and "dust".
640543
When the number of atoms of each element are equal on both sides.