Saturn’s second-largest moon, Rhea, captured in natural color, drifting just below the rings.
(via itsfullofstars, gravitazero … ridingwithrobots)
Saturn’s second-largest moon, Rhea, captured in natural color, drifting just below the rings.
(via itsfullofstars, gravitazero … ridingwithrobots)
Here’s another picture I scanned from Cosmos magazine
Sunspots
Sunspots are cooler and less luminous than the rest of the sun because complex magnetic feilds prevent hot material from entering the area. In this image from the U.S. National Solar Observatory, the area arounf the spot appears granulated. Gas inside the star heats up and rises in columns of hot gas. Each granule can be more than 1,000 km across and usually lasts between eight and twenty minutes.
Here’s a picture I scanned from Cosmos magazine.
Magnetic storm
Like giant arches, coronal loops stick out of the solar surface-many of these would span several Earths. The looks are fountains of electrically charged particales trapped by the Earth’s magnetic fields. This is a false color image of the loops, taken with the Transition Region and Coronal Explorer (TRACE) satillite. In 2007 scientists found proof that waves of magnetic energy called Alfven waves travel along these coronal loops. ALfven waves could heat the solar corona by their vibrations, explaining at least in part, why the corona is so hot.
his bright meteor streaked through dark night skies over Sutherland, South Africa on November 15. Potentially part of the annual Leonid meteor shower, its sudden, brilliant appearance, likened to a camera’s flash, was captured by chance as it passed between two clouds. Of course, the two clouds are also visible to the eye in dark southern skies - the Large and Small Magellanic Clouds - satellite galaxies of our own Milky Way. This year’s Leonid meteor shower peaked on November 17 as the Earth passed through the stream of dust from periodic comet Tempel-Tuttle.
Painted Lady, Flight, Food feeder, 11-18-09, BioServe’s “Butterflies in Space” Experiment
A clip from the International Space Station where the “Butterflies in Space” experiment is being conducted. This experiment was made possible through the generous and on-going support of the National Space Biomedical Research Institute (NSBRI) and the Baylor College of Medicine (BCM). This video is of some Painted lady larvae from Clearwater Butterflies in Florida feeding, floating, and exploring their new habitat. The larva at the center of the screen is free-floating and appears to be in the middle of molting. The larva may be trying the chew off its old skin. A disadvantage of zero-gravity for these little guys, they have to hang on to something to help rid themselves of their old skin. This one seems to be struggling as it is unable to reach the sides. It will have to wait for the slightest of bump or movement of the ISS for it to reach a wall. We are all pulling for him/her here on the ground. Check out tomorrows video to see if it has made any progress.
A postcard from the edge of the Solar system.
Courtesy of Voyager 1.
Video Close-Up: The Sun’s Surface in Swirling Detail
A telescope carried by balloon to the edge of Earth’s stratosphere has returned the most detailed video of the sun’s surface to date.
Released Wednesday by an international research team led by astronomers from Germany’s Max Planck Institute for Solar System Research, the video shows what the naked human eye could never see, even if we could look at the sun without blinding ourselves.
Near-ultraviolet wavelengths and magnetic fields are visualized on the video, which is all the more clear because telescope’s stratospheric positioning puts it beyond the light-scattering veil of Earth’s atmosphere.
M83’s Center from Refurbished Hubble
What’s happening at the center of spiral galaxy M83? Just about everything, from the looks of it. M83 is one of the closest spiral galaxies to our own Milky Way Galaxy and from a distance of 15 million light-years, appears to be relatively normal. Zooming in on M83’s nucleus with the latest telescopes, however, shows the center to be an energetic and busy place. Visible in the above image — from the newly installed Wide Field Camera 3 pointing through the recently refurbished Hubble Space Telescope — are bright newly formed stars and giant lanes of dark dust. An image with similar perspectivefrom the Chandra X-ray Observatory shows the region is also rich in very hot gas and small bright sources. The remnants of about 60 supernova blasts can be found in the above image.