Astronomy Without A Telescope – Oh-My-God Particles

[/caption] Cosmic rays are really sub-atomic particles, being mainly protons (hydrogen nuclei) and occasionally helium or heavier atomic nuclei and very occasionally electrons. Cosmic ray particles are very energetic as a result of them having a substantial velocity and hence a substantial momentum. The Oh-My-God particle detected over Utah in 1991 was probably a proton …

From 2MASS To You… The Most Complete 3-D Map of Local Universe

[/caption] Isn’t this era of astronomy incredible? There are times when I thumb through my old astronomy books with their outdated information and simply marvel over today’s capabilities. Who would have believed just 50 years ago that we’d be peering into the far reaches of our Universe – let alone mapping them? Thanks to an …

Astronomy Without A Telescope – Dark Statistics

[/caption] The hypothetical dark flow seen in the movement of galaxy clusters requires that we can reliably identify a clear statistical correlation in the motion of distant objects which are, in any case, flowing outwards with the expansion of the universe and may also have their own individual (or peculiar) motion arising from gravitational interactions. …

Hubble Predicts the Future of Omega Centauri

[/caption] Using four years of data from the Hubble Space Telescope’s Advanced Camera for Surveys, astronomers have made the most accurate measurements of the movement of stars in the globular cluster Omega Centauri, and now can predict their movements for the next 10,000 years. This “beehive” of stars is tightly crammed together, so resolving the …