Science & TechnologyS


Fireball 4

Huge asteroid 324 Bamberga makes a return visit to Earth's neighborhood on Friday the 13th

Asteroid Bamberga_1
© Created by thAuthor using Starry Night Education softwareThe path of 324 Bamberga through Pisces from September 8th to October 10th.
This week offers a fine chance to catch sight of a unique asteroid.

324 Bamberga reaches opposition this week in the constellation Pisces on (friggatriskaidekaphobics take note) Friday the 13th at 2PM EDT/16:00 Universal Time.

About 230 kilometres in size, 324 Bamberga reaches 0.81 astronomical units from the Earth this week. No other asteroid so large gets so close. Discovered on February 25th, 1892 by Johann Palisa, 324 Bamberga only reaches a favorable opposition once every 22 years.

Shining at magnitude +8.1, 324 Bamberga is also one of the highest numbered asteroids visible with binoculars. Earth-crossing asteroids 433 Eros, which made a close pass last year, and 4179 Toutatis are two of the very few asteroids that possess a larger number designations that can regularly reach +10th magnitude.

Comet

New Comet: P/2013 P5 (PanSTARRS)

Discovery Date: August 15, 2013

Magnitude: 20.9 mag

Discoverer: Pan-STARRS 1 telescope (Haleakala)

P/2013 P5
© Aerith NetMagnitudes Graph
The orbital elements are published on M.P.E.C. 2013-R59.

Galaxy

Monster Earth volcano one of solar system's biggest

Tamu Massif
© Discovery.comA 3D image of the seafloor shows the size and shape of the Tamu Massif volcano under the Pacific Ocean.
The largest volcano on Earth is not in Hawaii, but hidden beneath the western Pacific Ocean and covers an area the size of New Mexico, announced scientists on Thursday. The vast lump of lava is called the Tamu Massif and lies about 1,000 miles (1,600 km) east of Japan and is comparable, though somewhat less voluminous, than the enormous volcano Olympus Mons on Mars. Play Video Volcanoes Slide Silently to Their Death These animations show how giant old volcanoes atop the Pacific tectonic plate travel westward, at up to six centimeters per year. DCI

Tamu Massif itself is not a new discovery, but until now had been considered the product of several undersea volcanoes heaping and clumping up lava on the seafloor. New seismic reflection data showing the structures of the lava flows inside Tamu Massif, along with and specimens from the Integrated Ocean Drilling Program now suggest the entire, very low-relief, 120,000 square-mile (311,000 square kilometer) feature erupted from a single source. For instance, the seismic data show that some of the layers of lava -- representing single eruption events -- are 75 feet (23 meters) thick, spread out over huge distances.

Blackbox

Pew! Pew! Pew! NASA moon probe carries space laser for big "Tech test"?

A NASA probe launching toward the moon tonight (Sept. 6) is carrying a high-tech laser experiment designed to improve deep-space communications. NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft - which is slated to blast off from the agency's Wallops Flight Facility in Virginia today at 11:27 p.m. EDT (0327 GMT Sept. 7) - aims primarily to study the moon's wispy atmosphere. But it also totes laser gear to see how well two-way communications can go between a moon-bound spacecraft and the Earth.

The laser experiment may end up helping out a variety of future missions, NASA officials say. [How NASA's Moon Laser Tech Works (Infographic)]

LADEE's short-duration demonstrator, however, is the first dedicated system to send communications to and from Earth using a laser instead of radio. It can send six times more data using 25 percent less power than an equivalent high-end radio-frequency system, NASA officials said. Plus, laser communications are not as likely to be jammed.

Image

Question

The whole internet can't identify this mystery cocoon

Image
© Troy Alexander/Tambopata Research Centre
Like a tiny insect Stonehenge, the mystery of this 2-centimetre-wide structure has captured the imagination of entomologists and amateur bug-spotters around the world.

Troy Alexander, who noticed the unusual construction while volunteering at the Tambopata Macaw Project in Peru, calls it a "maypole with a horse corral". He posted photos on Facebook and Reddit asking if anyone could identify it - and despite his cry for help going viral on blogs and websites around the world, it remains unanswered.

Telescope

Cassiopeia the Queen in northeast after sunset

Cassiopeia the Queen can be found in the northeast after sunset on September evenings. This constellation has the distinctive shape of a W, or M, depending on the time of night you see it. The shape of this constellation makes Cassiopeia's stars very noticeable.
Image
Cassiopeia represents an ancient queen of Ethiopia. The entire constellation is sometimes also called Cassiopeia's Chair, and some old star maps depict the queen sitting on the chair, marked by the five brightest stars of this constellation. These stars are Schedar, Caph, Gamma Cassiopeiae, Ruchbah, and Segin.

If you have a dark sky, you can look below Cassiopeia in the northeast on these September evenings for a famous binocular object. This object is called the "Double Cluster" in the constellation Perseus. These are open star clusters, each of which consists of young stars still moving together from the primordial cloud of gas and dust that gave birth to the cluster's stars. These clusters are familiarly known to stargazers as H and Chi Persei.

Blue Planet

Pacific underwater volcano one of Solar System's biggest

tamu massif
© IODP, Texas A&M UniversityEarth's largest volcano: a 3-D map of the Tamu Massif formation
Geologists on Thursday, September 5, announced they had uncovered a stupendous volcano that is the biggest in the world and rivals the greatest in the Solar System.

Dubbed Tamu Massif, the volcano is part of the Shatsky Rise, a deep plateau on the floor of the Pacific located around 1,600 kilometers (1,000 miles) east of Japan, they said.

It comprises a single, immense, rounded dome in the shape of a shield, formed of hardened lava from an eruption around 144 million years ago.

It covers around 310,000 square kilometers (119,000 square miles) - the equivalent area of Britain and Ireland combined - and slopes upwards to a height of around 3.5 km (2.2 miles) above the sea floor.

Info

Stem cells mimic human brain

Image
© Madeline A. LancasterA cross-section of a brain-like clump of neural cells derived from human stem cells.
With the right mix of nutrients and a little bit of coaxing, human stem cells derived from skin can assemble spontaneously into brain-like chunks of tissue. Researchers provide the first description and application of these 'mini-brains' today in Nature1.

"It's a seminal study to making a brain in a dish," says Clive Svendsen, a neurobiologist at the University of California, Los Angeles, who was not involved in the study. "That's phenomenal." A fully formed artificial brain might still be years away, he notes, but the pea-sized neural clumps developed in this work could prove useful for researching human neurological diseases.

Researchers have previously used human stem cells to grow structures resembling the eye2 and even tissue layers similar to the brain's cortex3. But in the latest advance, scientists developed bigger and more complex neural-tissue clumps by first growing the stem cells on a synthetic gel that resembled natural connective tissues found in the brain and elsewhere in the body. Then, they plopped the nascent clumps into a spinning bath to infuse the tissue with nutrients and oxygen.

"The big surprise was that it worked," says study co-author Juergen Knoblich, a developmental biologist at the Institute of Molecular Biotechnology in Vienna. The blobs grew to resemble the brains of fetuses in the ninth week of development.

Info

Rare skull of fossil ape discovered

Fossilized Cranium
© XinhuaA six-million-year-old fossilized cranium of a juvenile ape has been unearthed in southwest China's Yunnan Province.
Kunming - A six-million-year-old fossilized cranium of a juvenile ape has been unearthed in Southwest China's Yunnan province, a rare find paleontologists hope may help unravel the mystery of human origins.

The remains is only the second recovered cranium belonging to a juvenile ape inhabiting Eurasia in the Miocene that dates back to 23 to 5 million years ago, Ji Xueping, a researcher who led the study, told a news conference on Thursday.

"The skull boasts great significance in research on our ancestors, as the time when the primate lived was close to that of the first humans, estimated at between 7 million to 5 million years ago," said Ji, with Yunnan Institute of Cultural Relics and Archaeology.

"Africa has found a number of fossils of ancient primates of that age, but such finds are scarce in Asia. From this perspective, the discovery is quite important," said Lu Qingwu, a professor with Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences.

A detailed description of the find was published in the Chinese Sciences Bulletin last month, nearly four years after Ji and his fellows found it in a pit owned by a brick factory in Shuitangba community, Zhaotong city.

The age of the fossil ape, a member of the genus Lufengpithecus, was identified as between 6.2 to 6.1 million years ago in the late Miocene, the youngest among all ancient primates previously detected in Yunnan.

The well-preserved cranium that has maintained most of the facial skeleton is relatively complete and largely undistorted, providing valuable information about the morphology and growth of Lufengpithecus, according to the study.

Info

What's in urine? 3,000 chemicals and counting

Urine
© Shutterstock
Looking for an encyclopedia of pee? Scientists have laid out the entire chemical composition of human urine, revealing that more than 3,000 compounds are found in the fluid, and have published it all in an online database.

In the study, which took seven years to complete, the researchers found that at least 3,079 compounds can be detected in urine. Seventy-two of these compounds are made by bacteria, while 1,453 come from the body itself. Another 2,282 come from diet, drugs, cosmetics or environmental exposure (some compounds belong to more than one group).

"Urine is an incredibly complex biofluid. We had no idea there could be so many different compounds going into our toilets," said study researcher David Wishart, professor of biology and computing science at the University of Alberta.

The complete list of all metabolites that can be detected in human urine using current technologies has been placed into an online public database called the Urine Metabolome Database.The word metabolome refers to the complete collection of metabolites, which are the products of metabolism and include hormones, vitamins and other molecules.