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Astronomy

Astronomy

News, Happenings, and Events having to do with anything Astronomical
Big Joe Silence
BBC News - Nasa seeks help with Earth-Mars data links - http://www.bbc.com/news...
BBC News - Nasa seeks help with Earth-Mars data links
"Nasa is asking for help to get data back from its science missions orbiting Mars or roaming its surface. The US space agency is acting now to close a potential communications gap that is set to occur in 2020. It currently has no plans to launch orbiters capable of taking over data relay duties from existing, ageing spacecraft. Nasa is seeking input from universities and companies about better ways to relay the data back to Earth." - Big Joe Silence from Bookmarklet
Nils Sandin
Sunset With Sunspots - YouTube - https://www.youtube.com/watch...
"Yesterday I went out to shoot a sunset I've planed since last summer. This time of the year, the Sun passes right behind a big radar tower if you stand at the Swedish National Biathlon Arena in Östersund. The radar tower is located about 10 km away from the arena in a small village called Ås." - Nils Sandin from Bookmarklet
Nils Sandin
Detection of primordial gravitational waves announced | Ars Technica - http://arstechnica.com/science...
Detection of primordial gravitational waves announced | Ars Technica
"Primordial gravitational waves remain one of the outstanding untested hypotheses of inflation, the most popular model that explains the incredible uniformity of the CMB. According to inflationary theory, the Universe expanded very rapidly in the first fraction of a second, filling the cosmos with gravitational ripples. While inflation so far seems to explain a lot about the Universe, we have no direct evidence for it. BICEP, as a dedicated CMB polarization observatory, could provide some hints about primordial gravitational waves—and by extension, inflation." - Nils Sandin from Bookmarklet
Nils Sandin
What came before the big bang? - Boing Boing - http://boingboing.net/2014...
What came before the big bang? - Boing Boing
"Once this idea is accepted, it is immediately obvious that the question “What happened before the big bang?” is meaningless. There was no such epoch as “before the big bang,” because time began with the big bang." - Nils Sandin from Bookmarklet
Nils Sandin
A sort of particle-free supersymmetry found in exotic materials | Ars Technica - http://arstechnica.com/science...
A sort of particle-free supersymmetry found in exotic materials | Ars Technica
"An extension to the Standard Model, called supersymmetry, takes this idea further by incorporating symmetries of space-time, as the name suggests. One side effect of supersymmetry in particle physics is the prediction of a partner to each known particle, which (among other things) could help solve the mystery of dark matter." - Nils Sandin from Bookmarklet
Nils Sandin
Forget the Higgs, neutrinos may be the key to breaking the Standard Model | Ars Technica - http://arstechnica.com/science...
Forget the Higgs, neutrinos may be the key to breaking the Standard Model | Ars Technica
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"Ethereal as they are, neutrinos could make hefty changes to our understanding of the universe if physicists could answer four main questions: How does regular matter affect neutrinos? What causes neutrinos to have mass? Do antineutrinos live different lives from normal neutrinos? And even odder, are these ghostly particles their own antiparticles?" - Nils Sandin from Bookmarklet
Mark H
If you've not seen the ISS pass overhead in the UK over the past few nights here are the remaining times this month when it's going to do so. Depending on how good your eyesight is and the altitude it passes at you might just be able to discern some structure in the station as it's overhead. - Mark H from Bookmarklet
Koleksiyoner Ali
"Alman, Fransız ve Amerikan bilim insanları, geliştirdikleri bir bilgisayar simülasyonuyla Ay’ın gerçek yaşını hesapladı. Çalışma, Dünya'nın oluşumuna da ışık tutyor..." - Koleksiyoner Ali
ispat edilse de hiç aklım almıyor bu gibi hesaplamaları Ali abi - elet
Bluesun 2600
SOLAR 'SUPERSTORM' NARROWLY MISSES EARTH in 2012 | SpaceWeather.com - http://spaceweather.com/
SOLAR 'SUPERSTORM' NARROWLY MISSES EARTH in 2012 | SpaceWeather.com
"The heliophysics communitty is buzzing today in response to an article in Nature Communications, which describes an intense solar storm that narrowly missed Earth almost two years ago. On July 23, 2012, a CME rocketed away from the sun at 2000 km/s, almost four times faster than a typical eruption. The storm tore through Earth orbit, but fortunately Earth wasn't there. Instead it hit the STEREO-A spacecraft, which experienced the most intense solar proton storm since 1976. Researchers have been analyzing the data ever since, and they have concluded that the storm was akin to the Carrington Event of 1859. "Had it hit Earth, it probably would have been like the big one in 1859," says Janet Luhmann of UC Berkeley, a co-author of the paper. "The effect today [on] our modern technologies would have been tremendous." The Carrington Event was a series of powerful CMEs that hit Earth head-on, sparking Northern Lights as far south as Tahiti. Intense geomagnetic storms caused global telegraph... more... - Bluesun 2600 from Bookmarklet
Nils Sandin
A Successor to Sagan Reboots ‘Cosmos’ - NYTimes.com - http://www.nytimes.com/2014...
A Successor to Sagan Reboots ‘Cosmos’ - NYTimes.com
"Sitting on a rock by the Pacific, Neil deGrasse Tyson, host of the show and director of the Hayden Planetarium in New York City, pulls out an old desk calendar that had belonged to Carl Sagan, the Cornell astronomer and author. On a date in 1975 he finds his own name. The most famous astronomer in the land had invited young Neil, then a high school student in the Bronx with a passion for astronomy, to spend a day in Ithaca." - Nils Sandin from Bookmarklet
Nils Sandin
The audacious rescue plan that might have saved space shuttle Columbia | Ars Technica - http://arstechnica.com/science...
The audacious rescue plan that might have saved space shuttle Columbia | Ars Technica
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"During the writing of its report, the CAIB had the same question, so it asked NASA to develop a theoretical repair and rescue plan for Columbia "based on the premise that the wing damage events during launch were recognized early during the mission." The result was an absolutely remarkable set of documents, which appear at the end of the report as Appendix D.13. They carry the low-key title "STS-107 In-Flight Options Assessment," but the scenario they outline would have pushed NASA to its absolute limits as it mounted the most dramatic space mission of all time." - Nils Sandin from Bookmarklet
That is a fascinating and terrifying read. - Mark H
Nils Sandin
"On the morning of Saturday, Feb. 22, the Moon drifted in front of the planet Saturn from the point of view of certain locations on Earth. Luckily one of those locations was Perth, Australia, where astrophotographer Colin Legg happens to be, and thus we all get to enjoy the fantastic results of his photographic and astronomical acumen." - Nils Sandin from Bookmarklet
Nils Sandin
Fwd: Star Wars planets migrate into position around stellar pairs | Ars Technica - http://arstechnica.com/science... (via http://ff.im/1glrTi)
Nils Sandin
Fwd: Planck “Star” to Arise From Black Holes? - http://www.universetoday.com/109186... (via http://ff.im/1glrTh)
Nils Sandin
How We Know Gravity is Not (Just) a Force - http://www.universetoday.com/108740...
How We Know Gravity is Not (Just) a Force
"But we now understand that gravity as a force is only part of a more complex phenomenon described the the theory of general relativity.  While general relativity is an elegant theory, it’s a radical departure from the idea of gravity as a force.  As Carl Sagan once said, “Extraordinary claims require extraordinary evidence,” and Einstein’s theory is a very extraordinary claim.  But it turns out there are several extraordinary experiments that confirm the curvature of space and time." - Nils Sandin from Bookmarklet
So....lead balls on rubber sheets? And the sheet is made of Higg's bosons? - Slippy: Potato Croquette
Nils Sandin
Scientists search for understanding of dark matter - YouTube - http://www.youtube.com/watch...
Scientists search for understanding of dark matter - YouTube
Play
Miles O'Brien covers dark matter - Nils Sandin from Bookmarklet
Imabug
Mars Rover Turns 3-Month Mission Into Decade Of Exploration : NPR - http://www.npr.org/2014...
"Opportunity, NASA's Mars Rover, landed on Mars on Jan. 24, 2004. It was supposed to be a three-month mission, but 10 years later the rover is still investigating the red planet and sending data and images back to NASA. Jim Bell, an astronomer at Arizona State University, talks with NPR's Rachel Martin about Opportunity's decade on Mars." - Imabug from Bookmarklet
Mark H
Bright New Supernova Blows Up in Nearby M82, the Cigar Galaxy - http://www.universetoday.com/108386...
Bright New Supernova Blows Up in Nearby M82, the Cigar Galaxy
"Astronomers are saying this new supernova is currently at magnitude +11 to +12, so its definitely not visible with the naked eye. You’ll need a 4 inch telescope at least to be able to see it. That said, at 12 million light years away, this is (at the moment) the brightest, closest supernova since SN 1993 J kaboomed in neighboring galaxy M81 21 years ago in 1993. M81 and M82, along with NGC 3077, form a close-knit interacting group." - Mark H from Bookmarklet
Viz image caption " An space explosion 12 million years ago, yesterday" - Slippy: Potato Croquette from Android
Might brighten to 8th magnitude, which would make it visible in most ordinary binoculars, assuming one knows where to look. - Joe
Bluesun 2600
AURORA, BOOM! On Jan. 11th, Bjørn Hugo Hansen of Øverbygd, Norway, observed an explosive display of auroras--with sound effects. "The temperature was -27 C, and I was standing on the ice by our cabin. In the distance I could hear cracking sounds from the ice, a strange sound like a mix of whale bubbles hitting the ice and a small earthquake. This happens often. I believe it is stronger tonight, though, because of a big drop in temperature. Faint auroras were dancing quietly overhead when I spoke to myself -- 'Come on Aurora – give me all you got.' And BOOM! The sky exploded behind me. - Bluesun 2600 from Bookmarklet
Mark H
"No, this isn’t a distant view of the London Eye. This nebula with a giant star at its center is known as SBW2007. Astronomers say it has striking similarities to a star that went supernova back in 1987, SN 1987A. Both stars had identical rings of the same size and age, which were travelling at similar speeds; both were located in similar HII regions; and they had the same brightness. We didn’t have the telescopic firepower back before 1987 like we do now, so we don’t have a closeup view of how SN 1987A looked before it exploded, but astonomers think SBW2007 is a snapshot of SN1987a’s appearance, pre-supernova." - Mark H from Bookmarklet
Ali Oz
"The German-UK consortium building the operational spacecraft for Europe's Galileo sat-nav system wins a contract to provide an additional eight units." - Ali Oz
Koleksiyoner Ali
Mark H
What did the Vikings and Saxons call the Stars? - http://englishhistoryauthors.b...
What did the Vikings and Saxons call the Stars?
"The Norse and Anglo- Saxons looked at the world in a way very different to the mythology that was developed by the Greeks and Romans. Most of the constellations in our night sky have derived their modern names from the Greek myths. Yet the ancestors of those of us from England and Scandinavia had totally different names for the shapes formed by the stars above us." - Mark H from Bookmarklet
"The Edda was a book of Icelandic-Norwegian legends and in it there is a passage saying where the norse believed stars came from. 'Then they (the gods) took the sparks and burning embers that were flying about after they had been blown out of Muspellheimr, and placed them in the midst of the firmament both above and below to give light heaven and earth. They gave their stations to all... more... - Mark H
Big Joe Silence
BBC News - Hope still for 'dead' Comet Ison - http://www.bbc.co.uk/news...
BBC News - Hope still for 'dead' Comet Ison
"Comet Ison, or some part of it, may have survived its encounter with the Sun, say scientists. The giant ball of ice and dust was initially declared dead when it failed to re-emerge from behind the star with the expected brightness. All that could be seen was a dull smudge in telescope images - its nucleus and tail assumed destroyed. But recent pictures have indicated a brightening of what may be a small fragment of the comet. Astronomers admit to being surprised and delighted, but now caution that anything could happen in the coming hours and days. This remnant of Ison could continue to brighten, or it could simply fizzle out altogether. Karl Battams wrote on the Nasa Comet Ison Observing Campaign blog: "It does appear that at least some small fraction of Ison has remained in one piece and is actively releasing material. "We have no idea how big this nucleus is, if there is indeed one. If there is a nucleus, it is still too soon to tell how long it will survive. "If it does survive... more... - Big Joe Silence from Bookmarklet
Bluesun 2600
Comet ISON Brightening as its Moment of Truth Nears - Homepage Observing - SkyandTelescope.com - http://www.skyandtelescope.com/observi...
Comet ISON Brightening as its Moment of Truth Nears - Homepage Observing - SkyandTelescope.com
Comet ISON Brightening as its Moment of Truth Nears - Homepage Observing - SkyandTelescope.com
Comet ISON Brightening as its Moment of Truth Nears - Homepage Observing - SkyandTelescope.com
"Comet ISON, anticipated by skywatchers for more than a year, is brightening fast just days from its fateful hairpin swing around the broiling surface of the Sun on November 28th. The comet is now a greenish-white fuzzy "star" in binoculars, low in the east-southeast at the beginning of dawn. Telescopic photos are showing it with a long, ribbony tail. The comet has flared with unexpected outbursts of gas and dust three times already this month." - Bluesun 2600 from Bookmarklet
Mark H
Here’s A Nine-Billion-Year Old Gravitational Lens In Space - http://www.universetoday.com/105597...
Here’s A Nine-Billion-Year Old Gravitational Lens In Space
Here’s A Nine-Billion-Year Old Gravitational Lens In Space
"Here’s a picture of what deflected light looks like from 9.4 billion years away. This is the most faraway “gravitational lens” that we know of, and a demonstration of how a galaxy can bend the light of an object behind it. The phenomenon was first predicted by Einstein, and is a handy way of measuring mass (including the mass of mysterious dark matter.)" - Mark H from Bookmarklet
Bluesun 2600
Chelyabinsk Meteorite is World’s Largest to be Recovered (Video) - http://guardianlv.com/2013...
Chelyabinsk Meteorite is World’s Largest to be Recovered (Video)
"At Lake Chebarkul in central Russia, divers have brought to the surface a fragment of the Chelyabinsk meteor that is the world’s largest meteorite to be recovered. On February 15 this year, a 55 foot, 10,000 ton meteor entered the airspace over central Russia. As the meteor descended it shook buildings; broke numerous windows and was responsible for injuring over 1,000 people before breaking and burning up in the atmosphere. The BBC have posted a video of the huge rock being dragged out of the lake which you can see below. The meteor then traveled on a trajectory to Lake Chebarkul where the remains of the giant space rock broke through the ice covered lake. The meteorite left a hole of around 20 feet wide in the ice. In February this year, the world was stunned by the sight of the meteor’s fiery journey over Russia. The internet and YouTube was filled with pictures and videos of the meteor’s trajectory over cities and towns in the country. The five foot in length irregular rock was... more... - Bluesun 2600 from Bookmarklet
Bluesun 2600
09-27-13 Very large fireball in the east sky from Central Indiana - YouTube - http://www.youtube.com/watch...
09-27-13 Very large fireball in the east sky from Central Indiana - YouTube
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Apparently, this was seen of a series of objects from the midwest, Canada over to the east coast. Unconfirmed reports of an EMP effect taking out Cellular, & Radio stations in some of the areas that saw this. - Bluesun 2600 from Bookmarklet
Mark H
The Women Who Mapped the Universe And Still Couldn't Get Any Respect - http://blogs.smithsonianmag.com/history...
The Women Who Mapped the Universe And Still Couldn't Get Any Respect
The Women Who Mapped the Universe And Still Couldn't Get Any Respect
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"In 1881, Edward Charles Pickering, director of the Harvard Observatory, had a problem: the volume of data coming into his observatory was exceeding his staff’s ability to analyze it. He also had doubts about his staff’s competence–especially that of his assistant, who Pickering dubbed inefficient at cataloging. So he did what any scientist of the latter 19th century would have done: he fired his male assistant and replaced him with his maid, Williamina Fleming. Fleming proved so adept at computing and copying that she would work at Harvard for 34 years–eventually managing a large staff of assistants." - Mark H from Bookmarklet
"So began an era in Harvard Observatory history where women — more than 80 during Pickering’s tenure, from 1877 to his death in 1919 — worked for the director, computing and cataloging data. Some of these women would produce significant work on their own; some would even earn a certain level of fame among followers of female scientists. But the majority are remembered not individually... more... - Mark H
Koleksiyoner Ali
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