Astronomy

"Four galaxies are involved in this pile-up 280 million light years from Earth. The bright spiral galaxy at the center of the image is punching through the cluster at almost two million miles per hour." - mridul from Bookmarklet

""I had just observed NASA's LCROSS spacecraft," explains Mortfield. Using no more than a backyard telescope, he caught it zipping past spiral galaxy IC3808" - mridul from Bookmarklet

Wow! - Kol Tregaskes

Because you know you want the poster: http://www.amazon.com/Univers... - Curtis Jackson

"the Soviets were trying to beat us to the punch by landing the unmanned spacecraft Luna 15 while Apollo 11’s Columbia was still in orbit around the moon." - mridul from Bookmarklet

"The Mars Polar Lander was supposed to be a mission to the Red Planet's south polar region to study the climate, weather and the ever-changing polar cap. But the spacecraft went missing in December of 1999 after entering Mars atmosphere, and it's disappearance has been a mystery. Attempts at finding the presumably crashed lander using images from the Mars Global Surveyor have been unsuccessful. But now we have the Mars Reconnaissance Orbiter and its powerful HiRISE Camera. A new campaign has begun to try and find the Mars Polar Lander, and the best thing about it is that you can help!" - Imabug from Bookmarklet

"My youngest son often asks whether a particular object in the sky is a planet or a star. If it’s a planet, of course, he wants to know which planet. Some of them I can pick out. Venus isn’t usually rocket science (no pun intended). Mercury can be a little tougher. Fortunately, I stumbled across a video blog from Wolfram Alpha yesterday that describes their efforts specifically in the field of astronomy." - Kol Tregaskes from Bookmarklet

"On July 2 the detectors of Planck's High Frequency Instrument reached their amazingly low operational temperature of -273°C, making them the coldest known objects in space." - Ryo from Bookmarklet

Absolute zero. - Ozkan Altuner

Using a worldwide combination of diverse telescopes, astronomers have discovered that a giant galaxy's bursts of very high energy gamma rays are coming from a region very close to the supermassive black hole at its core. - Ryo from Bookmarklet

Sweetness! - Mo Kargas

"Beginning this 4th of July weekend, the station will appear once, twice, and sometimes three times a day for many days in a row." - mridul from Bookmarklet

Check the timing of sightings in your city here - http://spaceflight1.nasa.gov/realdat... - mridul

"supernova remnant known as RCW 86" - mridul from Bookmarklet

Pic: "Artist's impression of the new source HLX-1 (represented by the light blue object to the top left of the galactic bulge)" - Ryo from Bookmarklet

"On April 24, 1990, the Space Shuttle Discovery roared into space, carrying on board a revolution: The Hubble Space Telescope. It was the largest and most sensitive optical-light telescope ever launched into space, and while it suffered initially from a focusing problem, it would soon return some of the most amazing and beautiful astronomical images anyone had ever seen. Hubble was designed to be periodically upgraded, and even as I write this, astronauts are in the Space Shuttle Atlantis installing two new cameras, fixing two others, and replacing a whole slew of Hubble's parts. This is the last planned mission, ever, to service the venerable 'scope, so what better time to talk about it? Plus, it's arguably the world's most famous telescope (it's probably the only one people know by name), and yet I suspect that there are lots of things about it that might surprise you. So I present to you Ten Things You Don't Know About the Hubble Space Telescope, part of my Ten Things series. I... more... - Cee Bee from Bookmarklet

""The evidence is pretty strong that the Earth was hit by a comet in 1908."" - mridul from Bookmarklet

"Thanks to a unique "ballistic study" that combines data from ESO's Very Large Telescope and NASA's Chandra X-ray Observatory, astronomers have now solved a long-standing mystery of the Milky Way’s particle accelerators. They show that cosmic rays from our galaxy are very efficiently accelerated in the remnants of exploded stars." - Ryo from Bookmarklet

"A fortuitous orbit of the International Space Station allowed the astronauts this striking view of Sarychev Volcano (Kuril Islands, northeast of Japan) in an early stage of eruption on June 12, 2009. Sarychev Peak is one of the most active volcanoes in the Kuril Island chain, and it is located on the northwestern end of Matua Island. Prior to June 12, the last explosive eruption occurred in 1989, with eruptions in 1986, 1976, 1954, and 1946 also producing lava flows. Ash from the multi-day eruption has been detected 2,407 kilometers east-southeast and 926 kilometers west-northwest of the volcano, and commercial airline flights are being diverted away from the region to minimize the danger of engine failures from ash intake." - Alejandro from Bookmarklet

"On Wednesday, 2009 July 22, a total eclipse of the Sun is visible from within a narrow corridor that traverses half of Earth. The path of the Moon's umbral shadow begins in India and crosses through Nepal, Bangladesh, Bhutan, Myanmar and China." - mridul from Bookmarklet

Anyone up for a bus trip to Shanghai? Pack some sandwiches and a bottle of wine. Stop at the pub on the way back. - Gilbert Harding

"Transits of Mercury and Venus occur only a few hours apart on September 17, 13425. The first double transit of Venus and Mercury will occur on July 26, 69163, and the next on March 27, 224508". - mridul from Bookmarklet

I didn't believe that 69163 was actually the year, it's almost unimaginable. Thanks to these composite images of Mercury and Venus Transits we can see what would happen 67154 years from now. - mridul

"is as big across as Pluto and one-third of its mass, but shaped something "like a big squashed cigar" - mridul from Bookmarklet

"A slow-moving river of gas snaking deep within the sun's interior took longer than expected to reach the critical zone where sunspots are born." - mridul from Bookmarklet

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"Google is reportedly set to launch a new way to browse its News service. Flipper will let you view the results of your searches in a magazine format. " - Ryo from Bookmarklet

The right text for it: "The next generation of instruments for ground-based telescopes took a leap forward with the development of a new ultra-fast camera that can take 1500 finely exposed images per second even when observing extremely faint objects." - Ryo

i support this movement! here's more info: http://friendfeed.com/crazy-g... - Cee Bee

oops. didn't mean to include this in the astronomy & science groups. my apologies - Cee Bee