Hubble data predicts Milky Way galactic collision When Galaxies Collide! It sounds like an early science fiction novel. However, analysis of Hubble measurements shows that our own Milky Way galaxy is moving toward a head-on collision with our nearest neighbor, the Andromeda galaxy (also known as M31). The collision will start in about four billion years, and over the following three billion years the two spiral galaxies will coalesce into a large elliptical galaxy. Based on this data, NASA has produced a video of the upcoming collision. Mystery of cosmic rays' origin finally solved - physics-math - 14 February 2013 Video: Stellar cataclysm The protons that constantly smack into Earth's atmosphere at near the speed of light get their huge energies from exploding stars. At least that's what physicists and astronomers had long suspected, but direct evidence for the idea has been difficult to come by – until now. Cosmic rays are any charged particles arriving at Earth from space.
If the Moon Were Only 1 Pixel - A tediously accurate map of the solar system Mercury Venus Earth You Are Here Hell of Sand Game "Falling Sand Game", also "World of Sand", (2005) is a Java applet first found on the Dofi Blog via Fark thread, later enlarged and rehosted by Chirag Mehta. The game has been popular on community link sites like Digg and Delicious and involves four main falling particles: sand, water, salt, and oil. Each of these particles have special properties that can be manipulated; among these include burning, desiccating, growing, eroding, and more. Along with these four, main particles are auxiliary environmental manipulators: Wall, Fire, Plant, Spout, Cera (or wax), ???, and Eraser. By putting these together, one can thoroughly enjoy the modeling and construction of very complex structures and systems.
Hubble Wallpaper Search Picture Album Wallpaper Show Titles Observable universe The surface of last scattering is the collection of points in space at the exact distance that photons from the time of photon decoupling just reach us today. These are the photons we detect today as cosmic microwave background radiation (CMBR). However, with future technology, it may be possible to observe the still older neutrino background, or even more distant events via gravitational waves (which also should move at the speed of light). Sometimes astrophysicists distinguish between the visible universe, which includes only signals emitted since recombination—and the observable universe, which includes signals since the beginning of the cosmological expansion (the Big Bang in traditional cosmology, the end of the inflationary epoch in modern cosmology). The universe versus the observable universe