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Posts Tagged ‘Observable universe’

Turning Boring Data Into Awesome Movies

January 21, 2011 Leave a comment

As reported today on Scientific American, the Advanced Visualization Laboratory at the National Center for Supercomputing Applications (NCSA), turn terabytes worth of data into majestic astronomic visual treats.

They talk more about the process in the Scientific American piece.  For me though, sometimes you just want to see the Universe in all its awesomeness, and leave the data analysis to the experts. (That last statement is a bit ironic since I am a data analyst, but that’s not important right now…)

The first mini-galaxies formed when the universe was just a few hundred million years old. Over time, these small galaxies interacted and merged to build up ever larger galaxies, including big spirals like our own Milky Way. Credit: NCSA/NASA/B. O’Shea (MSU) and M. Norman (UC San Diego)

Two spiral galaxies undergo a protracted crash lasting two billion years, eventually merging into a single elliptical galaxy. Credit: NCSA/NASA/B. Robertson (Caltech) and L. Hernquist (Harvard Univ.)

Beginning when the universe is about 20 million years old and continuing to the present day, this visualization provides a glimpse of how the cosmic web may have developed. Credit: NCSA/NASA/R. Cen and J. Ostriker, (Princeton Univ.)

You can see a few more videos like these at the James Webb Telescope page.

Planck Sees the Universe as Never Before

January 12, 2011 Leave a comment

The first results from the European Space Agency’s Planck survery have been released today, and what a pretty picture these results make.

The Planck space telescope was launched in 2009 and currently resides in a Lagrangian point between the Earth and the Sun, roughly 1.5 million km away.

(A Lagrangian point is a point in space where the gravity from two bodies cancel each other out).

Planck’s mission is to study the Cosmic Microwave Background, the “echoes” from the Big Bang that appear everywhere in the sky.Plank was designed to be successor to the recently retired WMAP satellite, which measured the CMB with more accuracy than any instrument before it.

Artist's Conception of the Planck Telescope. Photo: ESA

The image above the top of the page was released back in July 2010, but the first scientific results have just been made public. They include 25 papers submitted to the journal Astronomy & Astrophysics. The results include some pretty cool stuff.

Planck has found evidence for an otherwise invisible population of galaxies shrouded in dust billions of years in the past, which formed stars at rates some 10–1000 times higher than we see in our own Galaxy today. Measurements of this population had never been made at these wavelengths before. “This is a first step, we are just learning how to work with these data and extract the most information,” says Jean-Loup Puget, CNRS-Université Paris Sud, Orsay, France.

These studies allow us to gain a better picture of how the Universe formed in its very early stages, about 380 000 years after the Big Bang.When the CMB was first discovered, it was thought to be completely isotropic over the entire sky. This made no sense, however, since the Universe is made up of clumps of matter like stars and galaxies. There had to be some structure in the CMB, and that is why these tools like WMAP and Planck have been developed; to see that structure in the CMB.While these results are exciting, the best is yet to come,

Today’s results are the tip of the scientific iceberg. Planck is exceeding expectations thanks to the dedication of everyone involved in the project,” says David Southwood, ESA Director of Science and Robotic Exploration.