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Science News for January 13, 2000


Chandra finds oxygen and neon ring in ashes of exploded star

Astronomers have discovered an expanding oxygen and neon ring in the remnants of a massive star explosion, providing unprecedented insights into the creation and dispersal of heavy elements. The findings suggest that these elements are necessary for life on Earth and could provide clues to the nature of supernovae.

SourceNASA/Marshall Space Flight Center News Center·DateJan 13, 2000
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Chandra image may reveal black hole in the milky way

Researchers detect faint X-ray source close to Sagittarius A*, a supermassive black hole at the center of our galaxy, using NASA's Chandra X-ray Observatory. The discovery provides fresh insight into how the black hole is powered and may challenge current models.

SourceNASA/Marshall Space Flight Center News Center·DateJan 13, 2000

Chandra resolves X-ray glow into millions of objects

NASA's Chandra X-ray Observatory has detected nearly a thousand faint X-ray-emitting stars in the young star-forming region of the Orion Nebula. The discovery will help unravel the astrophysical principles underlying violent magnetic activity in young stars.

SourceNASA/Marshall Space Flight Center News Center·DateJan 13, 2000

Chandra finds a 'cool' black hole at the heart of the Andromeda Galaxy

A team of scientists used Chandra to observe the Andromeda Galaxy and found a supermassive black hole with a surprisingly cool gas funneling into it. The temperature of this gas is only several million degrees, unlike other X-ray sources in the galaxy that reach millions of degrees.

SourceNASA/Marshall Space Flight Center News Center·DateJan 13, 2000

Black hole producing massive shock waves

Astronomers observe regular eruptions of hot gas every 45-90 minutes, chaotic system behaving like a giant particle collider. Researchers discover new class of flares made up of synchrotron radiation and plasma bubbles.

SourceCornell University·DateJan 13, 2000
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Chandra images the seething cauldron of starburst galaxy

The discovery sheds light on the formation and death of stars, revealing intricate structures such as neutron stars, black holes, and X-ray binary systems. The image provides valuable insights into the distribution of heavy atoms throughout the universe, offering a glimpse into the early history of the cosmos.

SourceNASA/Marshall Space Flight Center News Center·DateJan 13, 2000

Black breast cancer patients given appropriate treatment do as well as whites, finds University of Pittsburgh researcher

A review paper by University of Pittsburgh researcher James J. Dignam suggests that physiological responses to treatments are not responsible for poorer outcomes among blacks. Black women with the same stage of breast cancer have more advanced disease conditions due to less access to or utilization of healthcare resources.

SourceUniversity of Pittsburgh Medical Center·DateJan 13, 2000

Low levels of salivary cortisol associated with aggressive behavior

A four-year study found that consistently low salivary cortisol levels in boys aged 7-12 are associated with early onset and persistence of aggressive behavior. Boys with low cortisol levels exhibited three times the number of aggressive symptoms and were more likely to be singled out by their classmates.

SourceUniversity of Chicago Medical Center·JournalArchives of General Psychiatry·DateJan 13, 2000

New energy-efficient fume hood has potential to save hundreds of million of dollars in energy costs

The new fume hood technology uses only 30 percent of the airflow of standard laboratory fume hood installations, potentially saving $30 million annually in California. Nationally, the total savings is estimated to be ten times higher, with the technology having the potential to reduce operating costs and increase chip fabrication yield.

SourceDOE/Lawrence Berkeley National Laboratory·DateJan 13, 2000