Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Revealing Dark Energy's Hold on the Universe

The race is on to solve the mystery of dark energy, the unknown force that is causing the universe to expand faster and faster. It’s one of the biggest open questions in cosmology, but now a handful of high-profile projects are paving the way toward discovery.

A project called ACTPol in Chile, and another called SuMIRe in Hawaii, are launching massive observation campaigns that will image and map the positions of galaxies over billions of years of cosmic history.

This new picture will allow astronomers to study how dark energy has influenced the evolution of the universe. It may also help answer a question that confounds scientists today: why did dark energy kick in about 7 billion years ago, taking over the fate of the universe by causing the accelerated expansion we see today?

The Kavli Foundation recently held a roundtable discussion with three key researchers associated with two new dark energy projects: ACTPol, which stands for Atacama Cosmology Telescope – Polarization” and SuMIRe, or “Subaru Measurement of Images and Redshifts.”

“Together, we can build a big picture for how fast galaxy clusters grew at different points in cosmic history,” says David Spergel, a theoretical astrophysicist and professor at Princeton University and a leader of the ACTPol team. “And that will tell us how fast the universe was expanding at different points in time – whether it changed and how it changed.”

Says Masahiro Takada, a professor at the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) and a leading team member of SuMIRe: “Mapping galaxies and galaxy clusters throughout history tells us about the two dominant competing forces in the universe: the gravitational force of dark matter, which drives the growth of galaxies and galaxy clusters, and dark energy, which causes the universe to expand and pull everything apart. … So, mapping cosmic structure over time tells us the story about this ongoing competition between dark matter and dark energy.”

Michael Niemack, an assistant professor of physics at Cornell University and a leading team member of the ACTPol team, says: “We have the potential to understand cosmology from the most minute scales of particle physics, such as what dark matter might be made of, all the way to the grandest scales where dark energy is dominating the expansion today.”

On Aug. 22, Noon-12:30 pm PDT, The Kavli Foundation will host a live webcast on dark energy, featuring Michael Niemack as well as two researchers with the Dark Energy Survey: Joshua Frieman and Marcelle Soares-Santos. The three scientists will answer questions from the public during the live Google Hangout.

For the complete roundtable discussion and for information on the Aug. 22 webcast, visit:

James Cohen | Newswise
Further information:

More articles from Physics and Astronomy:

nachricht Move over, lasers: Scientists can now create holograms from neutrons, too
21.10.2016 | National Institute of Standards and Technology (NIST)

nachricht Finding the lightest superdeformed triaxial atomic nucleus
20.10.2016 | The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

Im Focus: Ultra-thin ferroelectric material for next-generation electronics

'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.

Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Resolving the mystery of preeclampsia

21.10.2016 | Health and Medicine

Stanford researchers create new special-purpose computer that may someday save us billions

21.10.2016 | Information Technology

From ancient fossils to future cars

21.10.2016 | Materials Sciences

More VideoLinks >>>