ScienceDaily: Astronomy News |
- Fierce 2012 magnetic storm barely missed Earth: Earth dodged huge magnetic bullet from the sun
- First interactive mosaic of lunar north pole
- New view of supernova death throes in 3-D
- Hubble revisits the Monkey Head Nebula
- Astronomers complete cosmic dust census
| Fierce 2012 magnetic storm barely missed Earth: Earth dodged huge magnetic bullet from the sun Posted: 18 Mar 2014 12:49 PM PDT On July 23, 2012, a huge magnetic storm propelled by two nearly simultaneous coronal mass ejections on the sun plowed through Earth's orbit. Luckily, Earth was on the other side of the sun at the time. Had the outburst hit Earth, however, it would have rivaled the largest magnetic storm to strike Earth in recorded history, possibly wreaking havoc with the electrical grid, satellites and GPS. |
| First interactive mosaic of lunar north pole Posted: 18 Mar 2014 12:49 PM PDT Scientists have created the largest high resolution mosaic of our moon's north polar region. The six-and-a-half feet (two-meters)-per-pixel images cover an area equal to more than one-quarter of the United States. The entire image measures 931,070 pixels square -- nearly 867 billion pixels total. A complete printout at 300 dots per inch -- considered crisp resolution for printed publications -- would require a square sheet of paper wider than a professional U.S. football field and almost as long. |
| New view of supernova death throes in 3-D Posted: 18 Mar 2014 08:36 AM PDT A powerful, new three-dimensional model provides fresh insight into the turbulent death throes of supernovas, whose final explosions outshine entire galaxies and populate the universe with elements that make life on Earth possible. It shows how the turbulent mixing of elements inside stars causes them to expand, contract, and spit out matter before they finally detonate. |
| Hubble revisits the Monkey Head Nebula Posted: 18 Mar 2014 06:40 AM PDT To celebrate its 24th year in orbit, the NASA/ESA Hubble Space Telescope has released a beautiful new image of part of NGC 2174, also known as the Monkey Head Nebula. This colorful region is filled with young stars embedded within bright wisps of cosmic gas and dust. |
| Astronomers complete cosmic dust census Posted: 18 Mar 2014 06:32 AM PDT Astronomers have completed a benchmark study of more than 300 galaxies, producing the largest census of dust in the local Universe, the Herschel Reference Survey. Astronomers observed galaxies at far-infrared and sub-millimeter wavelengths and captured the light directly emitted by dust grains. |
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