A group of scientists led by Geoffrey Collins of Wheaton College has produced the first global geologic map of Ganymede, Jupiter's seventh moon. The map combines the best images obtained during flybys conducted by NASA's Voyager 1 and 2 spacecraft (1979) and
While Hubble Space Telescope, orbiting around Earth, was able to observe the Saturn's northern auroras in ultraviolet wavelengths, Cassini spacecraft, orbiting around Saturn, got complementary close-up views in infrared, visible-light and ultraviolet
In a report published yesterday, new research suggests the enigmatic “ribbon” of energetic particles discovered at the edge of our solar system by NASA’s Interstellar Boundary Explorer (IBEX) may be only a small sign of the vast influence of the
NASA's Solar Dynamics Observatory (SDO), launched on February 11, 2010, keeps a 24-hour eye on the entire disk of the Sun, with a prime view of the graceful dance of solar material coursing through the Sun's atmosphere, the corona. The
In a new online paper titled Information Preservation and Weather Forecasting for Black Holes, the 72-year-old scientist Stephen Hawking says, "There are no black holes — in the sense from which light can't escape to infinity."
The
Solar physicists around the world today are wondering: has the Sun fallen silent? In 2013, the Sun began the peak phase of its 11-year sun spot cycle called the Solar Maximum when sunspot production should be at its highest. However, the lack of sunspot activity has
According to AMS, February offers the meteor observer in the northern hemisphere a couple of weak showers plus falling sporadic rates. February is also the start of the fireball season, when an abundance of fireballs seem to occur. This lasts well into April
Our solar system seems like a neat and orderly place, with small, rocky worlds near the Sun and big, gaseous worlds farther out, all eight planets following orbital paths unchanged since they formed.
However, the true history of the solar system is more riotous.
C/2013 A1 (Siding Spring) is a long-period comet set for a very close encounter with Mars later this year. Although early estimates of its orbit showed a good possibility of impact, latest observations suggest a near miss and raise great concern for Mars
After 31 months of deep space hibernation ESA's comet chaser "Rosetta" has woken up and contacted mission control today. The signal was received by NASA’s Goldstone ground station in California at 18:18 UTC, during the first window of oppor
