Cosmic Quiver: Saturn’s Vibrations Create Spirals in Rings
(Phys.org) —Astronomers know that gravity from Saturn’s various moons tug at the planet’s rings and make spirals in them. But the catalyst for certain spiral patterns has been difficult to pin down. Now, two Cornell astronomers have determined the source: Saturn itself.
The entire planet can vibrate like a bell within periods of a few hours, and these oscillations cause gravitational tugs that, in turn, create the spiral patterns in the rings. The cause of the vibrations remains unknown.
Final Boss design by Jakub Gruber is new this week at Threadless!
MORTAL KOMKAT!!!
Rhodochrosite on Quartz matrix with Fluorite and Pyrite
Sweet Home Mine, Colorado
(via mineralia)
(via fyeahvolcanoes)
Canadian Astronaut Chris Hadfield to Retire
Chris Hadfield, Canadian astronaut who captivated the world with his photos and videos on social media from the International Space Station (ISS) and professional badass - is retiring.
Cmdr Chris Hadfield, 53, says he is making good on a promise to his wife to move back to Canada after 30 years - effective July 3rd.
The astronaut was the first Canadian to command the ISS. He returned from his third space mission in May. He has lived in Texas since he became a fighter pilot in the late 1980s and was later assigned to the Nasa Johnson Space Center in Houston by the CSA.
“I’ve had such an interesting career and after 35 years it’s time to step down,” Cmdr Hadfield was quoted as saying by the CBC. “I’m the last astronaut of my class that’s still around.”
“Chris Hadfield has inspired all Canadians, especially our next-generation of scientists and engineers,” Chris Alexander, parliamentary secretary for defence, said in a statement.
“His exceptional career achievements make him a true Canadian hero and icon.”
Source: BBC
(via galaxyclusters)
digg:
Today’s Google doodle celebrates what would have been Maurice Sendak’s 85th birthday.
(via feigenbaumsworld)
Saturn being all raw and pretty.
Image from Cassini spacecraft.
The Large Magellanic Cloud in Ultraviolet
Image Credit: UV: NASA, Swift, S. Immler (Goddard) & M. Siegel (Penn State); Optical: Axel Mellinger (CMU)Explanation: Where are the hottest stars in the nearest galaxies? To help find out, NASA commissioned its Earth-orbiting Swift satellite to compile a multi-image mosaic of the neighboring Large Magellanic Cloud (LMC) galaxy in ultraviolet light. The above image shows where recently formed stars occur in the LMC, as the most massive of these young stars shine brightly in blue and ultraviolet. In contrast, visible in an image roll-over, a more familiar view of the LMC in visible light better highlights older stars. On the upper left is one of the largest star forming regions known in the entire Local Group of galaxies: the Tarantula Nebula. The Large Magellanic Cloud and its smaller companion the Small Magellanic Cloud are easily visible with the unaided eye to sky enthusiasts with a view of the southern sky. Detailed inspection of the above image is allowing a better galaxy-comprehensive picture for how star formation occurs.
Nasa Apod 10 June 2013
(via likeaphysicist)