Tech News Feed

Explosion first evidence of a hydrogen-deficient supernova progenitor

Science Daily Astronomy - Thu, 2014-10-16 19:28
A new model is the first characterization of the progenitor for a hydrogen-deficient supernova. The model predicts that a bright hot star, which is the binary companion to an exploding object, remains after the explosion.Their findings have important implications for the evolution of massive stars.

NASA spacecraft provides new information about sun's atmosphere

Science Daily Astronomy - Thu, 2014-10-16 18:54
NASA's Interface Region Imaging Spectrograph (IRIS) has provided scientists with five new findings into how the sun's atmosphere, or corona, is heated far hotter than its surface, what causes the sun's constant outflow of particles called the solar wind, and what mechanisms accelerate particles that power solar flares.

Tiny 'nanoflares' might heat the Sun's corona

Science Daily Astronomy - Thu, 2014-10-16 17:06
Why is the Sun's million-degree corona, or outermost atmosphere, so much hotter than the Sun's surface? This question has baffled astronomers for decades. Today, a team led by Paola Testa is presenting new clues to the mystery of coronal heating. The team finds that miniature solar flares called 'nanoflares' -- and the speedy electrons they produce -- might partly be the source of that heat, at least in some of the hottest parts of the Sun's corona.

Wobbling of a Saturn moon hints at what lies beneath

Science Daily Astronomy - Thu, 2014-10-16 14:36
Using instruments aboard the Cassini spacecraft to measure the wobbles of Mimas, the closest of Saturn's regular moons, an astronomer has inferred that this small moon's icy surface cloaks either a rugby ball-shaped rocky core or a sloshing sub-surface ocean.

Hubble finds extremely distant galaxy through cosmic magnifying glass

Science Daily Astronomy - Thu, 2014-10-16 14:08
Using the Hubble Space Telescope and the lensing power of giant galaxy cluster Abell 2744, astronomers may have made the most reliable distance measurement yet of an object that existed in the very early universe. The galaxy, estimated to be over 13 billion light-years away, is one of the farthest, faintest, and smallest galaxies ever seen.

Inexplicable signal from unseen universe provides tantalizing clue about one of astronomy's greatest secrets - dark matter

Science Daily Astronomy - Thu, 2014-10-16 08:54
The first potential indication of direct detection of Dark Matter – something that has been a mystery in physics for over 30 years -- has been attained. Astronomers found what appears to be a signature of 'axions', predicted 'Dark Matter' particle candidates.

Making measurements when a comet passes close to Mars

Science Daily Astronomy - Thu, 2014-10-16 08:54
On Sunday 19 October at 20:29 CET a comet will pass close to the planet Mars. At the same time the Swedish instrument ASPERA-3 is on board the European satellite Mars Express orbiting Mars and ready to make measurements.

Getting to know super-Earths: Using Hubble to study mysterious exoplanet

Science Daily Astronomy - Wed, 2014-10-15 15:25
Results from NASA's Kepler mission have indicated that the most common planets in the galaxy are super-Earths -- those that are bigger than Earth but smaller than Neptune. We have no examples of these planets in our own solar system, so astronomers are using space telescopes to try to find out more about these worlds. Most recently they used Hubble to study the planet HD 97658b, in the constellation Leo.

Milky Way ransacks nearby dwarf galaxies

Science Daily Astronomy - Wed, 2014-10-15 15:25
Astronomers have discovered that our nearest galactic neighbors, the dwarf spheroidal galaxies, are devoid of star-forming gas, and that our Milky Way Galaxy is to blame.

Potential Kuiper belt targets for new horizons Pluto mission

Science Daily Astronomy - Wed, 2014-10-15 14:28
NASA's Hubble Space Telescope has uncovered three Kuiper Belt objects that the agency's New Horizons spacecraft could potentially visit after it flies by Pluto in July 2015.

Astronomers spot faraway Uranus-like planet: First 'ice giant' planet found in another solar system

Science Daily Astronomy - Wed, 2014-10-15 10:13
Our view of other solar systems just got a little more familiar, with the discovery of a planet 25,000 light-years away that resembles our own Uranus. Astronomers have discovered hundreds of planets around the Milky Way, including rocky planets similar to Earth and gas planets similar to Jupiter. But there is a third type of planet in our solar system -- part gas, part ice -- and this is the first time anyone has spotted a twin for our so-called "ice giant" planets, Uranus and Neptune.

Construction secrets of a galactic metropolis: APEX reveals hidden star formation in protocluster

Science Daily Astronomy - Wed, 2014-10-15 09:22
Astronomers have used the APEX telescope to probe a huge galaxy cluster that is forming in the early Universe and revealed that much of the star formation taking place is not only hidden by dust, but also occurring in unexpected places. This is the first time that a full census of the star formation in such an object has been possible.

Rediscovering Venus to find faraway Earths: Measuring gravitational pull of a planet should speed search

Science Daily Astronomy - Tue, 2014-10-14 15:25
As the search for Earth-like planets wages on, a team of researchers may have found a way to speed up the process. The team is developing a new laser-based technology known as the green astro-comb to obtain information about the mass of a distant planet. Using this information, astronomers will be able to determine whether distant exoplanets are rocky worlds like Earth or less dense gas giants like Jupiter.

NASA mission provides its first look at Martian upper atmosphere

Science Daily Astronomy - Tue, 2014-10-14 15:03
NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has provided scientists their first look at a storm of energetic solar particles at Mars, produced unprecedented ultraviolet images of the tenuous oxygen, hydrogen, and carbon coronas surrounding the Red Planet, and yielded a comprehensive map of highly variable ozone in the atmosphere underlying the coronas.

Is matter falling into the massive black hole at the center of the Milky Way or being ejected from it?

Science Daily Astronomy - Tue, 2014-10-14 11:47
Is matter falling into the massive black hole at the center of the Milky Way or being ejected from it? No one knows for sure, but an astrophysicist is searching for an answer.

NASA prepares its science fleet for Oct. 19 Mars comet encounter

Science Daily Astronomy - Mon, 2014-10-13 16:07
NASA's extensive fleet of science assets, particularly those orbiting and roving Mars, have front row seats to image and study a once-in-a-lifetime comet flyby on Sunday, Oct. 19. Comet C/2013 A1, also known as comet Siding Spring, will pass within about 87,000 miles (139,500 kilometers) of the Red Planet -- less than half the distance between Earth and our moon and less than one-tenth the distance of any known comet flyby of Earth.

Preparing for Mars-grazing Comet Siding Spring

Science Daily Astronomy - Fri, 2014-10-10 11:16
Up to and during Comet Siding Spring’s flyby of Mars on Oct. 19, NASA’s Compact Reconnaissance Imaging Spectrometer for Mars will attempt to capture data about the comet that are unobtainable from Earth.

Leaky, star-forming galaxies leads to better understand the universe

Science Daily Astronomy - Fri, 2014-10-10 10:08
Focusing on large, star-forming galaxies, researchers were able to measure radiation leaks in an effort to better understand how the universe evolved as the first stars were formed.

Temperature and water vapor on an exoplanet mapped

Science Daily Astronomy - Thu, 2014-10-09 14:14
A team of scientists has made the most detailed map yet of the temperature of an exoplanet’s atmosphere and traced the amount of water it contains. The planet targeted for both of the investigations was the hot-Jupiter exoplanet WASP-43b.

Milky Way has half the amount of dark matter as previously thought

Science Daily Astronomy - Thu, 2014-10-09 09:16
A new measurement of dark matter in the Milky Way has revealed there is half as much of the mysterious substance as previously thought.