NASA's Kepler Mission has discovered the first confirmed planetary system with more than one planet transiting the same star.
Heavens
GAINESVILLE, Fla. — A team of astronomers report discovery of two Saturn-sized planets, plus a possible third planet with a radius just one-and-a-half times that of Earth, orbiting a distant star.
NASA announced the discovery, which was also detailed in a paper in this week's edition of Science Express, today.
The Kepler spacecraft, launched to seek Earth-like planets around sun-like stars, has so far identified more than 700 planet candidates that pass in front of or "transit" their stars.
BOULDER--In a bid to unlock longstanding mysteries of the Sun, including the impacts on Earth of its 11-year cycle, an international team of scientists has successfully probed a distant star. By monitoring the star's sound waves, the team has observed a magnetic cycle analogous to the Sun's solar cycle.
The study, conducted by scientists at the National Center for Atmospheric Research (NCAR) and colleagues in France and Spain, is being published this week as a "Brevia" in Science.
Large changes in the sun's energy output may drive unexpectedly dramatic fluctuations in Earth's outer atmosphere.
Results of a study published today link a recent, temporary shrinking of a high atmospheric layer with a sharp drop in the sun's ultraviolet radiation levels.
Compliance with practice guideline-recommended treatment for cirrhosis is associated with a reduction in first esophageal variceal hemorrhage (EVH; bleeding), according to a new study in Clinical Gastroenterology and Hepatology, the official journal of the American Gastroenterological Association (AGA) Institute. Cirrhosis is a condition in which the liver is permanently scarred or injured.
Scientists at the University of East Anglia, have shown that fungus-farming ants are using multiple antibiotics as weed killers to maintain their fungus gardens.
Research led by Dr Matt Hutchings and published today in the journal BMC Biology shows that ants use the antibiotics to inhibit the growth of unwanted fungi and bacteria in their fungus cultures which they use to feed their larvae and queen.
These antibiotics are produced by actinomycete bacteria that live on the ants in a mutual symbiosis.
Charcoal, which has been around for 38,000 years, has many more uses than just barbecuing burgers.Credit: Elena Elisseeva
Since 2009, researchers from Bonn and Mexico have been systematically uncovering and mapping the old walls of Uxul, a Mayan city. "In the process, we also came across two, about 100 m square water reservoirs," explained Iken Paap, who directs the project with Professor Dr. Nikolai Grube and the Mexican archaeologist Antonio Benavides Castillo.
Boston, MA – Transforming the U.S. health care system from paper-based to electronic-based may improve health care quality and reduce costs, but a new study by researchers from the Harvard School of Public Health (HSPH) suggests that goal is far off. The adoption of basic or comprehensive electronic health records (EHR) by U.S. hospitals increased modestly from 8.7% in 2008 to 11.9% in 2009, but only 2% of hospitals met the federal "meaningful use" standard needed to qualify for government financial incentives.
Astronomers believe they have discovered the origin of our universe's first super-massive black holes, which formed some 13 billion years ago.
The discovery fills in a missing chapter of our universe's early history, and could help write the next chapter -- in which scientists better understand how gravity and dark matter formed the universe as we know it.
While the common perception of asteroids is that they are giant rocks lumbering about in orbit, a new study shows they actually are constantly changing "little worlds" that can give birth to smaller asteroids that split off to start their own lives as they circle around the sun.
The asteroid belt between Mars and Jupiter is often depicted as a dull zone of dead rocks with an occasional wayward speedster smashing through on its way toward the sun.
A new study appearing in the Aug. 26 issue of the journal Nature paints a different picture, one of slow but steady change, where sunlight gradually drives asteroids to split in two and move far apart to become independent asteroids among the millions orbiting the sun.
It's a mystery that presented itself unexpectedly: The radioactive decay of some elements sitting quietly in laboratories on Earth seemed to be influenced by activities inside the sun, 93 million miles away.
Is this possible?
HOUSTON – (Aug. 24, 2010) – What does it feel like to return to Earth after a long stay in space? Until now, it has been difficult during astronaut training to realistically simulate the dizzying effects the human body can experience.
Dr. Steven Moore leads a research group that has developed a Galvanic vestibular stimulation (GVS) system that safely induces the sensory and mobility disturbances commonly experienced by astronauts after returning to Earth's gravity, making it an excellent operational training tool.