An international team of astronomers using data from NASA's Chandra X-ray Observatory has suggested that a stellar explosion known as the Kepler’s supernova was not only more powerful, but might have also occurred at a greater distance, than...
NBCNews.comThe physics of crazy slackline walk between trucks at 80 mphNBCNews.comIn a video that has racked up 2 million views on YouTube in the past five days, world record-holding slackliner Faith Dickey walks across a rope strung between two semi-trucks...
Astronomy | centrifugal force | A new study has been published that seems very simple yet has some very interesting repercussions: it shows the Sun is the most spherical natural object ever me (Why is the Sun so round?
"How is it possible astronomers know distances in the universe where they can't arrive at all? In this workshop participants will get an insight in the parallax method, that laid the basis for the measurement of the universe. This method is based on the triangulation method that is used on the earth."
"Glycolaldehyde (HCOCH2OH) is the simplest sugar and an important intermediate in the path toward forming more complex biologically relevant molecules. In this paper we present the first detection of 13 transitions of glycolaldehyde around a solar-type young star, through Atacama Large Millimeter Array (ALMA) observations of the Class 0 protostellar binary IRAS 16293-2422 at 220 GHz (6 transitions) and 690 GHz (7 transitions). The glycolaldehyde lines have their origin in warm (200-300 K) gas close to the individual components of the binary. Glycolaldehyde co-exists with its isomer, methyl formate (HCOOCH3), which is a factor 10-15 more abundant toward the two sources. The data also show a tentative detection of ethylene glycol, the reduced alcohol of glycolaldehyde. In the 690 GHz data, the seven transitions predicted to have the highest optical depths based on modeling of the 220 GHz lines all show red-shifted absorption profiles toward one of the components in the binary (IRAS16293B) indicative of infall and emission at the systemic velocity offset from this by about 0.2" (25 AU). We discuss the constraints on the chemical formation of glycolaldehyde and other organic species - in particular, in the context of laboratory experiments of photochemistry of methanol-containing ices. The relative abundances appear to be consistent with UV photochemistry of a CH3OH-CO mixed ice that has undergone mild heating. The order of magnitude increase in line density in these early ALMA data illustrate its huge potential to reveal the full chemical complexity associated with the formation of solar system analogs."
NASA's Kepler mission has found the first multi-planet solar system orbiting a binary star, characterized in large part by University of Texas at Austin astronomers using two telescopes at the university's McDonald Observatory in West Texas.
Scientists using the Lyman Alpha Mapping Project (LAMP) spectrometer aboard NASA's Lunar Reconnaissance Orbiter (LRO) have made the first spectroscopic observations of the noble gas helium in the tenuous atmosphere surrounding the Moon.
Scribblar is a free online live collaboration tool that is perfect for online interaction. It is used by teachers, students and schools in over 25 countries. It has powerful features which include a math equation editor, shared pointer, and snap shot capabilities. Students can justify their mathematical thinking with presentation tools from their seats. Try it out!
Scientists who came up with laser technology, glow-in-the-dark proteins and coral-inspired bone grafts received the first-ever Golden Goose Awards today on Capitol Hill, as part of a campaign to counter the fuss over seemingly silly science.
Astronomy doesn't deserve its reputation as a tough, expensive hobby. You just need to begin with the right advice.
En la articulo, tu puedes mirar a nueve pasos para apredizajes a astronomia. Los pasos incluir ir a la biblioteca, y otros pasos estan sencillo. Me gusta la information en la articula porque es inspirador.
With the plethora of mobile apps now available for astronomy applications, it’s hard to keep track of them all. Thanks to astronomer Andy Fraknoi and the American Astronomical Society there’s now a catalog for that.
When the distance from the Earth to the Moon comes up, the common figure thrown around is 402,336 km (or 250,000 miles). But have you every wondered how astronomers got that figure? And how exact it really is?
"Explanation: The Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky. Its haunting symmetries are seen in the very central region of this tantalizing image, processed to reveal the enormous but extremely faint halo of gaseous material, about 6 light-years across, which surrounds the brighter, familiar planetary nebula. Made with narrow and broadband data the composite picture shows the remarkably strong extended emission from twice ionized oxygen atoms in blue-green hues and ionized hydrogen and nitrogen in red. Planetary nebulae have long been appreciated as a final phase in the life of a sun-like star. But recently many planetaries have been found to have halos like this one, likely formed of material shrugged off during earlier active episodes in the star's evolution. While the planetary nebula phase is thought to last for around 10,000 years, astronomers estimate the age of the outer filamentary portions of this halo to be 50,000 to 90,000 years."
"This figure shows an actual image of a sunset on Earth compared to artistic representations for the best candidates of potential habitable worlds so far. CREDIT: PHL @ UPR AreciboThe Planetary Habitability Laboratory (PHL) is a virtual laboratory dedicated to the study of planetary habitability."
Why the differences? Size and type of stars. Full explanation on the original post.
"To Revolutionize Radio Astronomy, the International Square Kilometre Array (SKA) project (www.skatelescope.org) has a visionary plan for a $2 billion telescope network, and much of it will be based in Africa. For the first time, the continent will host the world's largest scientific instrument, symbolizing the importance of science and technology for Africa's future..."