Archive for research teams

NASA Selects Science Teams for Astrobiology Institute

NASA has awarded five-year grants totaling almost $40 million to five research teams to study the origin, evolution, distribution, and future of life in the universe.

The newly selected teams are from the University of Washington; Massachusetts Institute of Technology; University of Wisconsin, Madison; University of Illinois, Urbana-Champaign; and University of Southern California. Average funding to the teams is almost $8 million each. The interdisciplinary teams will become members of the NASA Astrobiology Institute (NAI), headquartered at NASA’s Ames Research Center in Moffett Field, Calif.

“These research teams join the NASA Astrobiology Institute at an exciting time for NASA’s exploration programs,” said John Grunsfeld, astronaut and associate administrator for NASA’s Science Mission Directorate in Washington.

“With the Curiosity rover preparing to investigate the potential habitability of Mars and the Kepler mission discovering planets outside our solar system, these research teams will help provide the critical interdisciplinary expertise needed to interpret data from these missions and plan future astrobiology-focused missions.”

The University of Washington’s “Virtual Planetary Laboratory,” led by Victoria Meadows, will integrate computer modeling with laboratory and field-work across a range of disciplines to extend knowledge of planetary habitability and astronomical biosignatures in support of NASA missions to study extrasolar planets.

The Massachusetts Institute of Technology team, led by Roger Summons, will focus on how signs of life are preserved in ancient rocks on Earth, with a focus on the origin and evolution of complex life, and how this knowledge can be applied to studies of Mars using the Curiosity rover.

The University of Wisconsin team, led by Clark Johnson, will study how to detect life in modern and ancient environments on Earth and other planetary bodies.

The University of Illinois team, led by Nigel Goldenfeld, seeks to define a “universal biology,” or fundamental principles underlying the origin and evolution of life anywhere, through an interdisciplinary study of how life began and evolved on Earth.

The University of Southern California team, led by Jan Amend, will study life in the subsurface, a potentially habitable environment on other worlds. They will use field, laboratory, and modeling approaches to detect and characterize Earth’s subsurface microbial life.

“The intellectual scope of astrobiology is breathtaking, from understanding how our planet went from lifeless to living, to understanding how life has adapted to Earth’s harshest environments, to exploring other worlds with the most advanced technologies to search for signs of life,” NAI Director Carl Pilcher said. “The new teams cover that breadth of astrobiology, and by coming together in the NAI, they will make the connections between disciplines and organizations that stimulate fundamental scientific advances.”

These five new teams join 10 other teams led by the University of Hawaii; Arizona State University, Tempe; The Carnegie Institution of Washington; Rensselaer Polytechnic Institute, Troy, N.Y.; Pennsylvania State University; Georgia Institute of Technology; and teams at Ames; NASA’s Goddard Space Flight Center in Greenbelt, Md.; and two teams at NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

Article source: http://www.spacedaily.com/reports/NASA_Selects_Science_Teams_for_Astrobiology_Institute_999.html

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Keck Observatory astronomer wins top award

MEDIA RELEASE

A Keck Observatory astronomer who led the way to the discovery of a super-massive black hole at the center of our galaxy has been recognized with the 2012 Crafoord Prize in Astronomy, an award almost as prestigious for astronomers as a Nobel Prize.

“This is a big one. I’m thrilled,” said Andrea Ghez of the University of California at Los Angeles.

For more than 16 years, Ghez and her team have been pushing the frontiers of high-resolution imaging technologies with the twin 10-meter Keck telescopes in order to explore the center of the Milky Way.

Andrea Ghez

By tracking the rapid, small-scale orbits of stars at the Galactic Center, they discovered the presence of a source of tremendous gravity – the best evidence yet that a supermassive black hole exists there. The reality of such an object confronts and challenges our knowledge of fundamental physics.

Ghez, who holds UCLA’s Lauren B. Leichtman Arthur E. Levine Chair in Astrophysics and heads UCLA’s Galactic Center Group, will be sharing the prize, and its 4 million Swedish Krona or $600,000 award, with Reinhard Genzel, scientific director of Max-Planck-Institute for Extraterrestrial Physics in Garching, Germany.

Genzel leads a group that has long worked independently to track the same stars at the Galactic Center.

“This year´s Crafoord Prize Laureates have found the most reliable evidence to date that super-massive black holes really exist,” reads a Jan. 19 release from the Royal Swedish Academy of Sciences. “For decades Reinhard Genzel and Andrea Ghez, with their research teams, have tracked stars around the center of the Milky Way galaxy. Separately, they both arrived at the same conclusion: in our home galaxy resides a giant black hole, called Sagittarius A.”

Ghez, born in New York City and raised in Chicago, started the project in 1995, when she was a fresh new assistant professor at UCLA, looking for a project that would make good use of her talents in high-resolution imaging.

“I had no idea that this project would lead to such recognition” Ghez said. “I was a new assistant professor and I was just looking for tenure. It was my very first Keck proposal.”

Her proposal was accepted and she went to work showing how a technique called speckle imaging could be used to dramatically sharpen images using what was at the time the world’s only 10-meter optical-infrared telescope: Keck I.

Speckle imaging corrects for the blurring effects of the earth’s atmosphere in processing of images after they have been captured by the telescopes’ instruments. These allowed the first diffraction-limited images – that is, images that are limited by a telescope’s power rather than the Earth’s turbulent atmosphere – to be produced with these large ground-based telescopes.

“I wanted to show that speckle worked at Keck,” Ghez said.

It did and it produced the first images that had the full resolving power of the Keck telescope. But that was just a start.

By 1999 the Keck II telescope was also operating and had become the first large telescope in the world to employ adaptive optics, a technology that cancels out distortions in starlight created by turbulence in Earth’s atmosphere. That sharpened the images of the Galactic Center ten-fold and allowed diffraction-limited spectroscopic measurements to be made for the first time.

“It’s been like riding this incredible wave of technology,” Ghez said. “Since 1995 we have spent time at the telescopes every summer working on this. I had no idea what a rich project I was getting into at first. While the initial question was ‘is there a supermassive black hole at the center of our galaxy’, we have uncovered so many unexpected phenomena and technology has moved so fast that we created more questions than we answered”

“This research was possible thanks to the W. M. Keck Observatory, which houses the two largest telescopes in the world,” said Ghez. “They have enabled us to achieve the tremendous progress that we have made in correcting the distorting effects of the Earth’s atmosphere with high-angular resolution imaging. The most recent technology of adaptive optics is now opening up new horizons and allowing us to learn even more about this black hole at the center of our galaxy – how it was formed, how it grows and how to correctly describe the properties of space and time in the vicinity of such an exotic object.”

Another thing that helped the research was the competition between the two research teams, Ghez said.

“There’s nothing like competition to spur you on,” Ghez said. “It’s been a very collegial, constructive competition.”

And all that competition spins back around to drive the technology.

“Andrea has been a passionate and tireless user of the Keck telescopes and our high-angular-resolution imaging capabilities to study the Galactic Center and its super-massive black hole,” said Keck Observatory director Taft Armandroff. “I have no doubt that our adaptive optics capabilities are stronger and more tailored to address astrophysical questions by virtue of Andrea’s involvement and that of her team.”

The Crafoord Prize is an annual award that rotates between the disciplines of astronomy, mathematics, geosciences, biosciences and arthritis research. This year’s honorees came from mathematics and astronomy, fields last recognized in 2008.

The prize will be presented by the King of Sweden, at an award ceremony May 15, 2012.

Andrea Ghez will be the first woman to be awarded this prize in any field in its 30-year history.

 

You might be interested in:

  1. Keck astronomer wins Gruber Prize for Cosmology
  2. Keck Observatory project scientist wins 2010 Kavli Prize
  3. Live webcast from Keck Observatory (Sept. 15)
  4. W.M. Keck Observatory donates $10,000 to Imiola Astronomy Center of Hawaii
  5. Keck Observatory lecture “Galaxy Halos: Here Be Dragons” Wednesday (Jan 20)

Article source: http://www.hawaii247.com/2012/01/23/keck-observatory-astronomer-wins-top-award/

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