Ciência n@ Web | Maiores buracos negros de sempre 30 Dec 12:15


Encontre aqui as ligações às notícias que deram origem aos últimos CIÊNCIA N@ WEB, segmento que está a passar nos plasmas TVU., em toda a U.Porto:

Here you can find the links of the news that lead to the last "CIÊNCIA N@ WEB" a program of TVU., screened in the whole University of Porto:


Descobertos os maiores buracos negros de sempre

> Via: Pú

06/12/2011 - Uma equipa internacional de astrónomos descobriu dois buracos negros, no centro de duas galáxias, que são os maiores alguma vez detectados: cada um tem cerca de dez mil milhões de vezes a massa do Sol e ocupam um espaço equivalente a cerca de cinco vezes a distância do Sol a Plutão.

A whole new meaning for thinking on your feet

> Via:

12/12/2011 - Smithsonian researchers report that the brains of tiny spiders are so large that they fill their body cavities and overflow into their legs.

Ancient Fish Takes a Walk

> Via: scienceNOW

12/12/2011 - A new research reveals that at least one ancient fish can take a walk. The African lungfish (Protopterus annectens), a 230-million-year-old species found in backwaters in countries such as Senegal, has long been rumored to stride along riverbeds. Now researchers wielding video cameras have caught the creature in action in laboratory tanks, not only walking but also bounding on the skinny fins that sprout from the belly halfway between snout and tail. [videos]

World's Smallest Frogs Discovered in New Guinea

> Via: ScienceDaily

12/12/2011 - Field work by researcher Fred Kraus from Bishop Museum, Honolulu has found the world's smallest frogs in southeastern New Guinea. This also makes them the world's smallest tetrapods (non-fish vertebrates).

Ultrafast Camera Records at Speed of Light

> Via: Scientific American

13/12/2011 - Researchers at the Massachusetts Institute of Technology (M.I.T.) have developed an imaging system that can acquire visual data at a rate of one trillion exposures per second–fast enough to produce a slow-motion video of a burst of light traveling the length of a one-liter bottle, bouncing off the cap and reflecting back to the bottle’s bottom. [video]

Fermi shows that Tycho's star shines in gamma rays

> Via:

13/12/2011 - In early November 1572, observers on Earth witnessed the appearance of a "new star" in the constellation Cassiopeia, an event now recognized as the brightest naked-eye supernova in more than 400 years. Now, years of data collected by NASA's Fermi Gamma-Ray Space Telescope reveal that the shattered star's remains shine in high-energy gamma rays.

Three-dimensional technique on trial

> Via:

14/12/2011 - Imagine developing a detailed and accurate three-dimensional model from a single two-dimensional photograph. That is the promise of ankylography, a technique that, according to its creators, could reveal the structure of scientifically important subjects such as complex proteins that can be glimpsed only once before they are destroyed by the high-powered lasers used to image them.

HIV/AIDS vaccine developed at Western proceeding to human clinical trials

> Via:

20/12/2011 - The vaccine (SAV001) holds tremendous promise, having already proven to stimulate strong immune responses in preliminary toxicology tests with no adverse effects or safety risks. [video]

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