Movies of giant loops projecting from the surface of the Sun are giving new insights into the complex mechanisms that drive solar flares and Coronal Mass Ejections (CMEs). These eruptions release vast energy and electrically charged particles that can affect the Earth through space weather.
A new study provides the first conclusive proof of the existence of a space wind first proposed theoretically over 20 years ago. By analysing data from the European Space Agency's Cluster spacecraft, researcher Iannis Dandouras detected this plasmaspheric wind, so-called because it contributes to the loss of material from the plasmasphere, a donut-shaped region extending above the Earth's atmosphere.
Hovering about 70 light-years from Earth is a star astronomers call HD 97658, which is almost bright enough to see with the naked eye. But the real 'star' is the planet HD 97658b, not much more than twice the Earth's diameter and a little less than eight times its mass.
A new study that calculates the influence of cloud behavior on climate doubles the number of potentially habitable planets orbiting red dwarfs, the most common type of stars in the universe. This finding means that in the Milky Way galaxy alone, 60 billion planets may be orbiting red dwarf stars in the habitable zone.
Data from NASA's Voyager 1 spacecraft continues to provide new insight on the outskirts of our solar system, a frontier thought to be the last that Voyager will cross before becoming the first man-made object to reach interstellar space.
Gemini Observatory's Planet-Finding Campaign finds that, around many types of stars, distant gas-giant planets are rare and prefer to cling close to their parent stars. The impact on theories of planetary formation could be significant.
Researchers at Washington State University are working with Aerojet Corporation on an exploratory project to make custom satellite parts using 3-D printing. Lower costs, less waste, quicker turnaround and easier modification are some potential benefits.
Spiral galaxies like our own Milky Way appear to be much larger and more massive than previously believed, according to a new University of Colorado Boulder study by researchers using the Hubble Space Telescope.
Astronomers have gathered the most detailed observations ever into the surroundings of the supermassive black hole at the centre of an active galaxy, and made a surprising discovery: dust is being propelled into space in a ring-shaped disk.
A team of researchers at the Max Planck Institute for Astrophysics conducted the most expensive and most elaborate computer simulations so far to study the formation of neutron stars at the center of collapsing stars with unprecedented accuracy.
The University of Colorado Boulder has become a full institutional member of the Sloan Digital Sky Survey-IV, an ambitious effort by some of the world's top astronomers to map the celestial sky in three dimensions to learn more about the structure and evolution of the universe.
All stars begin their lives in groups. Most stars are born in small groups that quickly fall apart. Others form in huge, dense swarms, where stars jostle with thousands of neighbors while strong radiation and harsh stellar winds scour interstellar space, stripping planet-forming materials from nearby stars. It would thus seem an unlikely place to find alien worlds. Yet 3,000 light-years from Earth, in the star cluster NGC 6811, astronomers have found two planets smaller than Neptune orbiting sun-like stars.
A team of astronomers has combined new observations of Gliese 667C with existing data from HARPS at ESO's 3.6-meter telescope in Chile, to reveal a system with at least six planets. A record-breaking three of these planets are super-Earths lying in the zone around the star where liquid water could exist, making them possible candidates for the presence of life. This is the first system found with a fully packed habitable zone.