Posted By News On January 29, 2015 - 4:06pm
The NASA/ESA Hubble Space Telescope has captured this striking view of spiral galaxy NGC 7714. This galaxy has drifted too close to another nearby galaxy and the dramatic interaction has twisted its spiral arms out of shape, dragged streams of material out into space, and triggered bright bursts of star formation.
NGC 7714 is a spiral galaxy at 100 million light-years from Earth -- a relatively close neighbor in cosmic terms.
Posted By News On January 28, 2015 - 9:12pm
Though predictions of a Snowmageddon were misplaced (it happens the other way also - Hurricane Katrina was nothing special before it hit shore), they would have been a lot wilder if weather services had access to what NASA has. NASA's ISS-RapidScat instrument was monitoring wind speed showing hurricane-force wind gusts over a large enough region that RapidScat had to make ascending and descending passes over parts of it every 24 hours.
Posted By News On January 28, 2015 - 5:10pm
The two hemispheres of Mars are more different from any other planet in our solar system. Non-volcanic, flat lowlands characterise the northern hemisphere, while highlands punctuated by countless volcanoes extend across the southern hemisphere. Although theories and assumptions about the origin of this so-called and often-discussed Mars dichotomy abound, there are very few definitive answers.
ETH Zurich geophysicists under Giovanni Leone are now providing a new explanation.
Posted By News On January 27, 2015 - 4:30pm
Scientists have discovered a solar system with 5 Earth-sized planets dating back to the dawn of the Galaxy.
Thanks to the NASA Kepler mission, the scientists announced today (Tuesday 27 January 2015) in The Astrophysical Journal the observation of a Sun-like star (Kepler-444) hosting 5 planets with sizes between Mercury and Venus.
Kepler-444 was formed 11.2 billion years ago, when the Universe was less than 20% its current age. This is the oldest known system of terrestrial-sized planets in our Galaxy - 2 and a half times older than the Earth.
Posted By News On January 27, 2015 - 3:27pm
Astronomers poring over four years of data from NASA's Kepler spacecraft have discovered a star that's 11.2 billion years old and has at least five Earth-size planets.
Posted By News On January 26, 2015 - 6:00pm
Astronomers at the Leiden Observatory, The Netherlands, and the University of Rochester, USA, have discovered that the ring system that they see eclipse the very young Sun-like star J1407 is of enormous proportions, much larger and heavier than the ring system of Saturn. The ring system - the first of its kind to be found outside our solar system - was discovered in 2012 by a team led by Rochester's Eric Mamajek.
Posted By News On January 23, 2015 - 3:13pm
A multinational team of astronomers working on the High Energy Stereoscopic System (H.E.S.S.) telescopes found three extremely luminous gamma-ray sources in the Large Magellanic Cloud (LMC), a satellite dwarf galaxy of the Milky Way. These are objects of different types, namely the most powerful pulsar wind nebula; the most powerful supernova remnant; and a shell of 270 light years in diameter blown by multiple stars, and supernovae - a so-called superbubble.
Posted By News On January 20, 2015 - 3:04pm
Thinking small has enabled an international team of scientists to gain new insight into the evolution of planetary building blocks in the early solar system.
The researchers compared the results of small-scale numerical simulations of colliding rock and dust particles to the composition of meteorites. They found that collisions helped transform initially porous materials into the more highly solidified asteroids and meteorites observed today. The team of seven scientists published their evidence last month in Nature Communications.
Posted By News On January 29, 2015 - 3:31pm
Researchers at the University of Southampton have proposed a new fundamental particle which could explain why no one has managed to detect 'Dark Matter', the elusive missing 85 percent of the Universe's mass.
Dark Matter is thought to exist because of its gravitational effects on stars and galaxies, gravitational lensing (the bending of light rays) around these, and through its imprint on the Cosmic Microwave Background - the afterglow of the Big Bang.
Posted By News On January 22, 2015 - 4:00am
The dying moments of an asteroid's magnetic field have been successfully captured by researchers, in a study that offers a tantalising glimpse of what may happen to the Earth's magnetic core billions of years from now.