CosmicMicrowaveBackground
Latest
South Pole Telescope will study 'noise' from the early universe
Scientists just got a valuable tool in their quest to understand the cosmic microwave background radiation that persists from the earliest days of the universe. The South Pole Telescope recently received an ultra-sensitive camera that will study the cosmic microwave background at an extreme level of detail. Its 16,000 detectors (ten times more than a previous experiment) can spot minuscule changes in temperature when they receive light, helping them pick up the ancient microwave energy that's virtually omnipresent in the universe but difficult to detect with conventional methods.
Researchers may have detected signals from the universe’s first stars
The early development of our universe is still quite a mystery, but in a new study published today in Nature, researchers describe what may be evidence of when the first stars began to form. After the Big Bang, which took place some 13.7 billion years ago, the universe was dark, hot and full of high-energy particles. Photons couldn't survive, but after around 380,000 years, the universe cooled enough to allow light to actually stick around. That's when the cosmic microwave background (CMB) came to be. It's our universe's first surviving radiation and researchers have looked to it in order to learn more about the earliest years of our universe.
Planck satellite creates most detailed map ever of cosmic microwave background radiation
The European Space Agency's Planck satellite has been gathering data since its launch in 2009, slowly building up a map of the cosmic microwave background radiation -- a distant remnant of the Big Bang. The resulting image, seen above, is the most detailed ever put together of the cold glow that uniformly covers the universe, taking us all the way back to just a 380,000 years after the explosive inflation that gave birth to all matter, energy and time. There were some surprises, including more extreme temperature fluctuations between hemispheres than predicted by the standard model and confirmation of a pronounced cold spot that can no longer be dismissed as an artifact of previous satellite instruments. For more about just what Planck has taught us, along with a few more visualizations, check out the source link.
Planck telescope maps the universe in search of primordial light
Yep, that innocuous-looking picture above is the whole freaking universe, as perceived by the Planck telescope -- a long-wave light detector that's been catapulted into space to search for Big Bang clues. The European Space Agency is using it in order to get the most precise information to date on Cosmic Microwave Background radiation (apparent in the image as the magenta and yellow mush in the, ahem, background), which could in turn enlighten us on the conditions that gave rise to all of us omnivores prowling a gravity-assisted, ozone-protected, floating rock. The first mapping run took just over six months to complete, but the plan is to produce four such images using the Planck's super-cold (nearly at absolute zero) sensors before retiring the thing. Results are expected no sooner than 2013, so please do slide back from the edge of your seat.
