All Stories by David Shiga
- Astronomy
Dark Influence
A study of galaxy clusters tests whether dark matter particles can collide with each other, while other observations show that dark matter doesn't behave as expected near the centers of galaxies.
- Earth
Lightning creates radiation-safe zone
A relatively safe region within the seas of radiation that surround Earth owes its existence to lightning storms.
- Tech
Leak Locator: Ultrasound for finding holes in spacecraft
Researchers have devised a way to pinpoint leaks in spacecraft by listening to ultrasound waves traveling through the ship's hull.
- Planetary Science
Jupiter as mirror for the sun’s X rays
X rays emanating from Jupiter's midriff actually originate on the sun, new observations show.
- Health & Medicine
The Zero Gravity Diet
Living in space punishes the body as much as smoking a pack of cigarettes a day, says a new study of astronaut health and nutrition.
- Astronomy
Nursery Pictures: Astronomers glimpse primordial clustering
Astronomers have found the earliest traces of galaxy clustering, from a period just 1 billion years after the birth of the universe.
- Astronomy
Ghostly Galaxy: Massive, dark cloud intrigues scientists
Astronomers say they have found the only known galaxy devoid of stars.
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Poisonous Partnership
Tools from molecular biology are providing new insights into the viruses employed by parasitoid wasps to manipulate their caterpillar hosts.
- Health & Medicine
Healing Gone Haywire: Wound-repair genes signal cancer spread
An experimental test predicts which breast tumors will spread rapidly without treatment and which are likely to be less aggressive by tracking the activity of genes normally involved in mending injured tissue.
- Health & Medicine
Disease Detector: Chemical test may spot Alzheimer’s
A new test that detects very low levels of protein clumps associated with Alzheimer's may provide an early warning for the disease.
- Astronomy
Black Hole Bonanza: 10,000 objects near our galaxy’s center
Astronomers have found the first evidence of a suspected population of black holes near the Milky Way's center, each hole with 10 times the mass of the sun.
- Astronomy
Stars in the dust
The dusty disks surrounding three nearby stars show that they played host to massive collisions between asteroid-like objects as recently as 100 years ago.
