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. Nearly all of them are protons, and some have been accelerated to speeds higher than any achieved by a particle accelerator on Earth.
C/2009 R1 McNaught - June 2010 From Sky & Tel... We rarely see a good comet when it's at its best. Most comets are brightest when nearest the Sun - just when they’re most likely to be hidden in the Sun’s glare or below the sunrise or sunset horizon.
BUYING YOUR FIRST TELESCOPE Reflector?, refractor?, 60mm?, 80mm?, £150? Weather Athens Here we display the weather development for the next 7 days. Click on a tab to view a detailed day forecast. You can also use the keyboard arrow keys to navigate through the days, or if you use a touch screen, you can use the swipe function. Each tab includes a pictogram with the weather condition, maximal and minimal temperature, dominant wind speed and wind direction, the precipitation amount for 24h in mm and the sunshine hours. If you move your mouse over the logo for sunrise and sunset, also the current UV index is displayed. Normally, the maximum temperature is expected at late afternoon and the minimum at late night. Sun-Earth Day 2012: Amateur Astronomers 2012 Observing Certificate Program For 2012, NASA and the Astronomical League are partnering to offer two observing certificates. Completion of the requirements for each certificate will qualify you to download a certificate of completion. Requirements for completion are as follows. Level 1: Amateur Astronomers who successfully view the transit through a properly filtered telescope (e.g. white light or Ha filters, or one of many projection methods) will receive a certificate of participation in the Sun Earth Day Observing Challenge. Level 1 Observing Certificate
CMB Cosmic Background Radiation : One of the foremost cosmological discoveries was the detection of the cosmic background radiation. The discovery of an expanding Universe by Hubble was critical to our understanding of the origin of the Universe, known as the Big Bang. However, a dynamic Universe can also be explained by the steady state theory. SkippySky Astronomy Weather Forecast - Australia Map of High/Mid/Low Southern Auroral Latitude areas | Southern Hemisphere Aurora Forecast Map | Northern Hemisphere Aurora Forecast Map | Provisional Kp Index from GFZ Potsdam The Planetary Transit Special Award (Venus Transit) Planetary Transit Special Award Coordinator: Aaron B. Clevenson19411 Cluster Oaks Drive Humble, TX 77346-2918(281) 852-4667 E-mail: email@example.com Submissions must have been received before the end of 2012.
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 If the universe is finite but unbounded, it is also possible that the universe is smaller than the observable universe.
New dobbie mount for 8" f/4 OTA Hi all, I took a little break from the 17.5" remake to try out a few techniques with making a dobbie mount for an 8" rich field scope. Peter also has a coma corrector which will be necessary with such a fast scope. Peter (aka Hickny) and I purchased a new 8" f/4 OTA from Bintel this week that was lacking a mirror cell (cheap scope consequently). Constellation Hunter Program Introduction Constellation Hunter Program Chair: Cliff Mygatt P.O. Box 8607 Port Orchard, WA 98366 (360) 265-5418 E-mail: firstname.lastname@example.org Forensic astronomy Forensic astronomy is the use of astronomy, the scientific study of celestial objects, to determine past celestial constellations. This has been used, if relatively rarely, in forensic science (that is, for solving problems of relevance to the legal system) and for resolving historical problems more generally, notably issues in art history. Forensic science As a forensic science in the strict sense of the term, astronomical knowledge can help resolve certain legal questions. In one reported instance, an astronomer testified in court as an expert witness as to whether a newly built house would cast a shadow on another house.
A Scope Like "Alice" A Scope Like "Alice" Notes on the Construction of a Portable 8" Dobsonian Telescope Click here to see the images associated with this article. Setting the Stage In 1991, Bob Scholtz (my brother-in-law) and I took a trip to Australia to spend some time observing with the members of the Astronomical Society of New South Wales, and to trek through Australia's Northern Territory... the fabled "Outback." Bob and I are both amateur telescope makers (ATM's) from way back, and both of us have multiple instruments under our belts.
The Astronomical League Award Administrator John Goss email@example.com 932 Lee Lane Fincastle, VA 24090 Welcome to the Dark Sky Advocate Award! This award is unlike any other.