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Swift Satellite records early phase of gamma ray burst

UK astronomers using NASA Swift Satellite captured an ultraviolet spectrum of a gamma ray burst just 251 seconds after its onset, marking the earliest ever recorded. This breakthrough allows for calculations of distance and brightness within hundreds of seconds and provides new insights into GRB causes and host galaxies.

SourceScience and Technology Facilities Council·JournalMonthly Notices of the Royal Astronomical Society·DateMar 2, 2009

Cosmologists 'see' the cosmic dawn

Researchers at Durham University's Institute for Computational Cosmology created simulations to predict galaxy formation and dark matter effects. The work aims to improve understanding of dark matter, a mysterious substance making up 80% of the Universe's mass.

SourceDurham University·JournalMonthly Notices of the Royal Astronomical Society·DateFeb 10, 2009

Searching for primordial antimatter

Researchers used data from NASA's Chandra X-ray Observatory and Compton Gamma Ray Observatory to study the Bullet Cluster, where two large clusters of galaxies collided. The results show that the antimatter fraction in the cluster is less than three parts per million, ruling out significant amounts of antimatter on scales of about 65 m...

SourceChandra X-ray Center·JournalJournal of Cosmology and Astroparticle Physics·DateOct 30, 2008

Scientists discover bacteria that can cause bone infections

Scientists have identified a new species of bacteria that can cause bone infections, offering hope for improved diagnosis and treatment. The discovery relates to Mycobacterium species, which also cause tuberculosis and leprosy, and may lead to the development of new drugs to combat resistance.

SourceMicrobiology Society·JournalINTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY·DateOct 17, 2008

Cosmic eye sheds light on early galaxy formation

Researchers at Durham University and Caltech used gravitational lensing to study a young star-forming galaxy in the distant Universe, revealing its internal velocity structure and spiral disk. The findings provide insight into how the galaxy evolved into a present-day system like our Milky Way.

SourceDurham University·JournalNature·DateOct 8, 2008

More star births than astronomers have calculated

Astronomers have discovered that the number of newly formed stars is higher than initially calculated, with heavy stars forming in clusters near the center of galaxies. The study found that these clusters are more common in the core regions of galaxies, leading to a different ratio of heavy to light stars.

SourceUniversity of Bonn·JournalNature·DateOct 1, 2008

Gravity wave 'smoking gun' fizzles, says Case Western Reserve University physics researchers

Case Western Reserve University researchers discover that gravitational radiation can be produced by a mechanism other than inflation, which could redefine the concept of a 'smoking gun' for early universe theories. This finding strengthens motivation for detecting primordial gravitational radiation, which is crucial for understanding ...

SourceCase Western Reserve University·JournalPhysical Review Letters·DateApr 15, 2008

Why matter matters in the universe

Researchers investigated B-meson decays to understand the origin of matter's dominance over antimatter in the universe. The study reveals a significant discrepancy between theoretical models and observations, suggesting the presence of a new principle of physics.

SourceUniversity of Melbourne·JournalNature·DateMar 27, 2008

Rare cosmic rays are from far away

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.

SourceUniversity of Utah·JournalPhysical Review Letters·DateMar 20, 2008

Supercomputer could throw light on 'mysterious' dark energy

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.

SourceDurham University·JournalMonthly Notices of the Royal Astronomical Society·DateJan 10, 2008