Arctic sea ice coverage continued its below-average trend this year as the ice declined to its annual minimum on Sept. 17, according to the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado, Boulder.
Heavens
Thanks to new LEGO®-like components developed by researchers at the USC Viterbi School of Engineering, it is now possible to build a 3-D microfluidic system quickly and cheaply by simply snapping together small modules by hand.
ANN ARBOR, Mich. — A surprising new study pulls back the curtain on one of the most contentious issues in health care: differences in payment and income between physicians who perform operations, procedures or tests, and those who don't.
Contrary to perception, the research indicates, the physician payment system is not inherently "rigged" to favor surgeons and other procedure-performing doctors.
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed what may be the first-ever signs of windy weather around a T Tauri star, an infant analog of our own Sun. This may help explain why some T Tauri stars have disks that glow weirdly in infrared light while others shine in a more expected fashion.
Most of the fires captured in this image burn in Khabarovsk Krai, a territory occupying the coastline of the Sea of Okhotsk. Dozens of red hotspots, accompanied by plumes of smoke mark active fires. The smoke, which appears mostly white or grey, blows to the east towards the Sea of Okhotsk. Taiga and tundra are found in the north of this area, swampy forest inhabit the central depression, and deciduous forests are the natural vegetation in the south.
Infrared satellite imagery from NASA's Aqua satellite showed only a swirl of low-level clouds some deep clouds around Polo's weakening center on Sept. 22 as the storm weakened to a depression.
The Atmospheric Infrared Sounder or AIRS instrument aboard Aqua gathered infrared data on Polo on Sept. 22 at 5:11 a.m. EDT, reading cloud top temperatures. There was a small area of high clouds, indicating that most thunderstorms in the depression had weakened or already dissipated except for that area.
No one has ever directly observed gravitational waves, phenomena predicted by Einstein's theory of General Relativity, and such a discovery would have profound implications for the study of the Universe. Last March, however, the team behind the BICEP2 project made a ground-breaking announcement: the Antarctic observatory had detected a signal referable to gravitational waves. The study claimed to have excluded possible contaminants (other sources that could have generated the same signal) and that the observation was therefore to be considered genuine.
Evacuations of 2,819 people have occurred in the wake of the huge King Fire blazing out of control near the Eldorado National Forest. The King Fire is burning in steep terrain in the South Fork of the American River Canyon, Silver Creek Canyon, and the Rubicon Canyon, north of the community of Pollock Pines. The fire has crossed into Placer County and burned onto the Tahoe National Forest north of the Eldorado National Forest. The anticipated spread is expected to be minimal on Sept. 22 due to thunderstorms that moved through the area overnight, bringing lightning and rain.
During the week of Sept. 15, Hurricane Odile and its weakened remnants produced heavy rainfall that caused dangerous flooding over Mexico's Baja California peninsula and southwestern United States. NASA's Tropical Rainfall Measuring Mission or TRMM satellite gathers data on rainfall that was used to create a map that showed estimated totals that in one case neared almost three feet!
Some of Odile's may have been welcomed in the U.S. Southwest where some areas have been experiencing extreme to exceptional drought conditions, but some was extreme and led to flooding.
Tropical Storm Fung-Wong weakened over the weekend of Sept. 20-21 as it moved over Taiwan and approached Shanghai, China.
NASA's Aqua satellite captured an image of Tropical Storm Fung-Wong when it was approaching Taiwan on Sept. 20 at 1:35 a.m. EDT.
On Sunday, Sept. 21, Tropical Storm Fung-Wong was over Taiwan. It was centered at 26.0 north latitude and 122.0 east longitude, just 60 miles north-northeast of Taipei, Taiwan and moving to the north. Maximum sustained winds were near 50 knots (57 knots/92.6 kph).
Philadelphia, PA—Space surveillance is inherently challenging when compared to other tracking environments due to various reasons, not least of which is the long time gap between surveillance updates. "Unlike the air and missile defense environments where objects are frequently observed, the space surveillance environment data is starved, with many objects going several orbital periods between observations," according to researcher Joshua Horwood.
Scientists have shown how gravitational waves—invisible ripples in the fabric of space and time that propagate through the universe—might be "seen" by looking at the stars. The new model proposes that a star that oscillates at the same frequency as a gravitational wave will absorb energy from that wave and brighten, an overlooked prediction of Einstein's 1916 theory of general relativity. The study, which was published today in the Monthly Notices of the Royal Astronomical Society: Letters, contradicts previous assumptions about the behavior of gravitational waves.
NASA's Aqua satellite passed over the Atlantic Ocean and captured a picture of Tropical Storm Edouard as it continues to weaken. The National Hurricane Center expects Edouard to affect the western Azores over the next two days.
NASA's Aqua satellite flew over Tropical Storm Edouard on Sept. 18 at 1:45 p.m. EDT and the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument took a visible picture that showed the eye had disappeared and the bulk of clouds pushed east of center.
Former Hurricane Odile may be a bad memory for Baja California, but the remnants have moved over New Mexico and Texas where they are expected to bring rainfall there. NASA's TRMM satellite measured Odile's heavy rainfall rates on Sept. 18, and NOAA's GOES-West satellite saw the clouds associated with the former storm continue to linger over the U.S. Southwest on Sept. 19.
Tropical Storm Polo is riding along the coast of western Mexico like horses in the game of his namesake. NASA's Aqua satellite saw Polo about 300 miles south-southeast of Baja California on its track north.