Articles tagged with Universe
A team of Iowa State physicists, including Soeren Prell, are part of an international research team testing the Kobayashi-Maskawa theory, which explains the difference between matter and antimatter. The BaBar experiment has confirmed the theory's predictions and provided insights into the universe's origins.
Researchers used a massive computer simulation to 'see' gamma-rays given off by dark matter in the Milky Way galaxy. They predict that these gamma-rays should glow in a characteristic pattern near the Sun, which could help detect invisible clumps of dark matter.
The detection of GRB 080913 marks the most distant gamma-ray burst ever seen, occurring 12.8 billion light-years away. This finding reveals that the universe was less than one-seventh its present age when the star exploded.
Scientists use frequency comb to determine starlight color with high accuracy, allowing them to measure velocity changes of astronomical bodies with precision. This method could help search for Earth-like planets and test universe expansion acceleration.
Researchers analyzed light from small galaxies to determine their masses, finding all dwarf galaxies had the same mass - 10 million times the mass of the sun. This discovery reveals a fundamental property of dark matter, a key component of the universe.
The High-Resolution Soft X-Ray Spectrometer (SXS) will investigate dark matter, galaxy formation, and explore the nature of matter in extreme environments. NASA's Explorer Program Mission of Opportunity has awarded $44 million for the instrument and operations.
The Gamma-ray Large Area Space Telescope (GLAST) will search for answers to long-standing questions about dark matter, black holes, and gamma-ray bursts. With its extraordinary sensitivity and wide field-of-view, GLAST has the potential to detect thousands of hitherto unknown gamma-ray sources.
A small red dwarf star called EV Lacertae unleashed an unprecedented stellar flare, detected by NASA's Swift satellite. The star's fast rotation and magnetic fields generated the powerful flare, releasing energy across the electromagnetic spectrum.
Three postdoctoral researchers have been chosen to support innovative research on the Gamma-ray Large Area Telescope (GLAST) mission. The program aims to stimulate new ideas and approaches to enhance the scientific return of GLAST, surveying the high-energy sky with unprecedented sensitivity.
The galaxy proto-cluster LBG-2377 is the farthest ever detected, offering a glimpse into the universe's infancy when its light was emitted. Scientists believe it may grow into a massive galaxy cluster, born from a catastrophic event with gas and matter collapsing.
A NASA satellite has detected a record-breaking gamma ray burst explosion halfway across the universe. The explosion was seen with the naked eye from Earth, shattering previous records and providing insights into the universe's most distant objects.
Scientists confirm 1966 prediction that most energetic particles in the universe rarely reach Earth at full strength due to cosmic microwave background radiation. The GZK cutoff is a suppression of ultrahigh-energy cosmic rays, suggesting they come from galaxies beyond 150 million light years away.
The Virginia Tech group is exploring the possibility of an extra dimension, curled up like the universe at the Big Bang. They plan to detect small primordial black holes that produce radio pulses using a new Transient Array radio telescope.
The GLAST spacecraft is preparing for its launch on May 16 at the Kennedy Space Center. It will explore extreme environments in the universe, studying supermassive black hole systems, pulsars, and cosmic rays. The mission aims to answer questions about gamma-ray bursts and other cosmic phenomena.
Researchers detected no WIMPs, but the null result is valuable as it informs future detector designs. The Cryogenic Dark Matter Search will move to a deeper site at Snolab in Canada with larger detectors to increase chances of finding dark matter.
Physicist John Negele will discuss how quarks and gluons interact using lattice field theory on supercomputers. The tiny particles behave differently than larger particles, requiring a unique approach to study them.
The Atacama Large Millimeter/submillimeter Array (ALMA) will provide astronomers with unprecedented views of the origins of stars, galaxies, and planets. ALMA's high-resolution capabilities will enable scientists to unravel longstanding mysteries in astronomy.
The American Institute of Physics awarded prizes to four winners for their outstanding science writing. Quantum mechanics expert Tim Folger won for his article on the effect of gravity on a speck of dust, while physicist James Trefil received an award for explaining dark matter and dark energy in the universe's future.
For the first time, astronomers have directly visualized the distribution of dark matter in a supercluster, allowing for the detection of irregular clumps and detailed shapes. This breakthrough study, led by UBC researcher Catherine Heymans, uses NASA's Hubble Space Telescope to map the Abell 901/902 supercluster.
Researchers used supercomputing power to simulate the early Universe and identify potential methods for measuring dark energy. The study's findings will help design a proposed satellite mission called SPACE, which aims to unveil the nature of dark energy and its role in the Universe's accelerating expansion.
The GLAST satellite, a gamma-ray telescope, has arrived at the Naval Research Laboratory in Washington for testing before its launch later in 2008. The mission will study extreme environments in the universe, identifying unknown sources of gamma rays.
The Gamma-ray Large Area Space Telescope (GLAST) spacecraft has successfully completed two environmental tests and is now undergoing thermal and vacuum testing at the Naval Research Laboratory. The satellite will study extreme universe phenomena, including black holes and gamma-ray bursts.
A team of UWM researchers is analyzing data from the Laser Interferometer Gravitational-wave Observatory, searching for signs of Einstein's predicted gravitational waves. The team is using advanced computational power to sort through massive amounts of data generated by LIGO facilities.
Researchers find liquid-like behavior in granular particles bouncing off a target, similar to quark-gluon plasma experiments. The discovery provides insight into phenomena beyond equilibrium states, revealing classical concepts influencing quantum-scale events.
Researchers at University of Bonn use computer simulations to understand how star clusters are formed from interstellar gas clouds and evolve over time. The study finds that small clusters are easily destroyed by radiation from stars, while heavy clusters survive longer.
Cosmology@Home allows people worldwide to participate in cutting-edge cosmology research by donating their unused computing cycles. Participating computers calculate the observable predictions of millions of theoretical models with different parameters, which are then compared with actual data.
Astronomers have detected a huge burst of radio energy from the distant universe, suggesting a new area of study in astrophysics. The burst was so bright that it saturated equipment and could be equivalent to a large power station running for two billion years.
A groundbreaking study reveals that the first stars formed at the start of the Universe depend on dark matter's nature. The research suggests that some of these primordial stars can still be found in the Milky Way galaxy today.
The discovery of geologic time revolutionized our understanding of the world, allowing scientists to date rocks and calculate the age of the Earth. This breakthrough, achieved by Arthur Holmes in the early 20th century, had a profound impact on fields like plate tectonics and evolution.
The National Research Council recommends the Joint Dark Energy Mission, supported by NASA and DOE, to study dark energy's role in the universe's expansion. The mission aims to map the sky with unprecedented resolution and study Type Ia supernovae to shed light on this mysterious entity.
Researchers from the Weizmann Institute of Science have observed a rare and detailed view of a Type Ia supernova event, revealing the remnants of a red giant star that fed a white dwarf. This unique observation supports a widely accepted model of these explosions.
A new study using Chandra finds that younger, more distant galaxy clusters contain far more actively growing supermassive black holes than older, nearby ones. This rapid growth allows these black holes to thrive and influence their host galaxies.
Researchers discovered clear changes in interstellar material absorption, indicating the existence of gaseous shells around a white dwarf. The system was likely composed of a white dwarf feeding on its red giant companion, leading to the supernova explosion. This finding strongly supports the Type Ia supernova scenario.
The GLAST team is testing the satellite in a 'clean room' to prevent contamination due to dust and humidity. The clean environment ensures the sensitive instruments are protected during development, construction, and testing.
The ATLAS upgrade, called CARIBU, will enable researchers to accelerate beams of short-lived radioactive isotopes and study unstable nuclei. This will help scientists better understand the universe's heavy elements, including those created in supernovae explosions.
A MU physicist argues that the Lunar Laser Ranging (LLR) technique is not effective in measuring the gravitomagnetic field. The LLR method relies on processing data with two sets of mathematical equations, but it can introduce errors due to gauge freedom and insufficient analytic control.
The new VERITAS telescope array will enable the detection of an increased number of gamma ray sources, potentially including indirect dark matter detection. The instrument's sensitive instrumentation has an energy threshold of about 100 GeV and can identify sources with an intensity of about 1 photon per minute.
Art McDonald and his SNO team have won the Benjamin Franklin Medal in Physics for their discovery that neutrinos change flavour and have mass, modifying the Standard Model of particle physics. The award recognizes their outstanding scientific achievement in understanding the nature of matter and the universe.
Researchers have developed a new method for testing the reliability of tests, improving the accuracy of risk estimates and enabling better product quality control. The new approach takes into account the severity of errors, providing a more realistic measure of reliability.
Astrophysicists at the University of Illinois propose a new method to measure the fine-structure constant using relic radiation from the birth of the universe. This technique could help explain dark energy and constrain a
Richard Bond, a renowned cosmologist at the University of Toronto, has won the Gerhard Herzberg Canada Gold Medal for Science and Engineering. His research has provided crucial insights into the universe's current structure, shedding light on dark matter and its role in shaping the cosmos.
Physicists Xiao-Gang Wen and Michael Levin propose a new state of matter where electrons are entangled in string-nets. Their model predicts the emergence of conventional particles and fractionally charged quasiparticles, which behave according to Maxwell's equations.
Physicist Burton Richter says new experiments will answer some questions but raise others about the universe's composition and expansion. He emphasizes the need for prioritizing crucial research to advance our understanding of dark matter, dark energy, and the Standard Model.
Researchers propose explanation for formation of dwarf spheroidals, faint galaxies composed almost entirely of dark matter. Simulations suggest environmental effects, including ram pressure and tidal shocking, strip away luminous matter, leaving behind dark-matter shadow.
Researchers at University of Wisconsin-Madison devise approach to 'see' extra dimensions by deciphering cosmic energy released in the universe's violent birth. The method provides evidence for testing string theory's existence and predicts specific shapes for the six hidden dimensions.
Scientists at Max Planck Institute for Astrophysics have discovered a way to make a picture of everything that gravitates in the Universe using radio telescopes. By analyzing radio waves emitted from the early Universe, they can create high-resolution images of cosmic mass distribution, surpassing current galaxy distortions.
A RAND Corporation study suggests the US should focus on undermining support for Islamic terrorism within Muslim nations to defeat the global jihadist movement. The report emphasizes the importance of attacking the ideology's core principles and severing links between terrorist groups.
Fermilab will continue to provide opportunities for discovery in particle physics with the Tevatron and neutrino experiments. The new management structure brings together scientific leadership and management experience of the University of Chicago and URA.
Astrophysicists have resolved a long-standing issue with the Big Bang theory by studying gas movements in stars. Computer models revealed that low mass stars destroy helium 3 before it can be released into space, resolving the discrepancy.
Researchers created a mathematical code that describes how low-mass stars destroy helium-3 during evolution. This process resolves the discrepancy between helium-3 abundance and the Big Bang theory, providing insights into the universe's early stages.
A University of Southern California-led research group used X-ray crystallography to study the struggle between LTag, a cancer-causing protein, and p53, a key tumor suppressor. The study found that LTag inhibits p53's role by tying up six molecules, but p53 fights back by preventing virus replication.
Astronomers have discovered the faintest stars in a globular star cluster using Hubble's Advanced Camera for Surveys. The study reveals insights into the age, origin, and evolution of NGC 6397, which is estimated to be nearly 12 billion years old.
The COBE experiments confirmed the universe was born in a big bang, shedding light on its structure. Variations in the CMB revealed tiny but regular temperature fluctuations that exist everywhere in the cosmos.
SNAP, a NASA-supported mission, aims to measure the expansion history of the universe and investigate dark energy. Using two independent techniques, it will analyze thousands of Type Ia supernovae and independently probe the growth structure of the universe.
Researchers at Ohio State University have discovered a new method for calculating intergalactic distances, which implies that the Hubble constant may be significantly off the mark. The Triangulum Galaxy is estimated to be 15% farther away from our galaxy than previously measured, potentially making the universe 15% bigger and older.
The CERN Council has adopted a European strategy for particle physics, providing for European engagement and leadership. This marks an important step for the field, as the world's particle physicists embark on a new adventure with the Large Hadron Collider project.
Researchers used a supercomputer to calculate interactions among neutrons and protons from quark and gluon properties, providing insight into how nuclear forces emerge. This breakthrough paves the way for understanding how finely tuned the universe is and could reveal essential information about carbon-based life.
Saul Perlmutter, Adam Riess, and Brian Schmidt share the prize for their work on measuring changes in the universe's expansion rate. Their discovery has implications for understanding dark energy and its impact on galaxy distances.
New X-ray data from Chandra reveals that magnetic fields are responsible for the prodigious amounts of radiation emitted by super-massive black holes. The discovery uses a scale model in our galaxy to understand how all black holes work, including those powering quasars.
Adam Riess, a 36-year-old astronomer at Johns Hopkins University, has won the $1 million Shaw Prize for his work on dark energy, a phenomenon that accounts for 70 percent of the universe. He shares the award with Saul Perlmutter and Brian Schmidt, who worked on competing teams to measure the expansion rate of the universe.