Wednesday, October 23, 2013

Wet Asteroid’s Remains Found In Old Star That Could Have Hosted Habitable Planets

Wet Asteroid’s Remains Found In Old Star That Could Have Hosted Habitable Planets:
Artist's impression of a rocky and water-rich asteroid being torn apart by the strong gravity of the white dwarf star GD 61. Credit: Mark A. Garlick, space-art.co.uk, University of Warwick and University of Cambridge
Artist’s impression of a rocky and water-rich asteroid being torn apart by the strong gravity of the white dwarf star GD 61. Credit: Mark A. Garlick, space-art.co.uk, University of Warwick and University of Cambridge
Remains of a water-filled asteroid are circling a dying white dwarf star, right now, about 150 light-years from us. The new find is the first demonstration of water and a rocky surface in a spot beyond the solar system, researchers say.
The discovery is exciting to the astronomical team because, according to them, it’s likely that water on Earth came from asteroids, comets and other small bodies in the solar system. Finding a watery rocky body demonstrates that this theory has legs, they said. (There are, however, multiple explanations for water on Earth.)
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Planet Aurora Astro-Bubble

Planet Aurora Astro-Bubble:
A unique panoramic image from of the aurora seen over Norway on October 14. Credit and copyright: Göran Strand.
A unique panoramic image from of the aurora seen over Norway on October 14. Credit and copyright: Göran Strand.
How fun is this?! “Here’s a panoramic image from the aurora on October 14,” wrote Norwegian astrophotographer Göran Strand. “I’ve made a small world trapped inside a bubble floating in space. And a lonely photographer is trying to capture the ongoing aurora with his camera.”
This isn’t the first time we’ve seen photographers create their own little worlds from panoramic images (see here and here). Here’s a tutorial on how to do this.
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ALMA Peers Into Giant Black Hole Jets

ALMA Peers Into Giant Black Hole Jets:
This detailed view shows the central parts of the nearby active galaxy NGC 1433. The dim blue background image, showing the central dust lanes of this galaxy, comes from the NASA/ESA Hubble Space Telescope. The coloured structures near the centre are from recent ALMA observations that have revealed a spiral shape, as well as an unexpected outflow, for the first time. Credit: ALMA (ESO/NAOJ/NRAO)/NASA/ESA/F. Combes
This detailed view shows the central parts of the nearby active galaxy NGC 1433. The dim blue background image, showing the central dust lanes of this galaxy, comes from the NASA/ESA Hubble Space Telescope. The coloured structures near the centre are from recent ALMA observations that have revealed a spiral shape, as well as an unexpected outflow, for the first time. Credit: ALMA (ESO/NAOJ/NRAO)/NASA/ESA/F. Combes
Did you ever wonder what it would be like to observe what happens to a galaxy near a black hole? For all of us who remember that wonderful Disney movie, it would be a remarkable – if not hypnotic – experience. Now, thanks to the powerful observational tools of the Atacama Large Millimeter/submillimeter Array (ALMA), two international astronomy teams have had the opportunity to study the jets of black holes near their galactic cores and see just how they impact their neighborhood. The researchers have captured the best view so far of a molecular gas cloud surrounding a nearby, quiescent black hole and were gifted with a surprise look at the base of a massive jet near a distant one. (...)
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Here’s A Nine-Billion-Year Old Gravitational Lens In Space

Here’s A Nine-Billion-Year Old Gravitational Lens In Space:
A picture of the object J1000+0221, which demonstrates the most distant gravitational lens ever discovered. This Hubble picture shows a normal galaxy's center region (the glow in the picture), but the object is also aligned with a younger, star-creating galaxy that is in behind. The object in the foreground pulls light from the background galaxy with gravity -- making rings of pictures. Credit: NASA/ESA/A. van der Wel
A picture of the object J1000+0221, which demonstrates the most distant gravitational lens ever discovered. This Hubble picture shows a normal galaxy’s center region (the glow in the picture), but the object is also aligned with a younger, star-creating galaxy that is in behind. The object in the foreground pulls light from the background galaxy with gravity — making rings of pictures. Credit: NASA/ESA/A. van der Wel
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.)
“The discovery was completely by chance,” stated Arjen van der Wel, who is with the Max Planck Institute for Astronomy in Heidelberg, Germany.
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An Incredible View of Saturn that Could Only Be Seen by a Visiting Spacecraft

An Incredible View of Saturn that Could Only Be Seen by a Visiting Spacecraft:
Saturn and its rings, as seen from above the planet by the Cassini spacecraft. Credit: NASA/JPL/Space Science Institute. Assembled by Gordan Ugarkovic.
Saturn and its rings, as seen from above the planet by the Cassini spacecraft. Credit: NASA/JPL/Space Science Institute. Assembled by Gordan Ugarkovic.
So what did NASA do during the US government shutdown? You can’t just turn off spacecraft that are operating millions of miles away, so missions like the Mars rovers and the Cassini spacecraft at Saturn continued to send back images to Earth during the 16 days that most of NASA wasn’t up and running like usual. On October 10, 2013, as Cassini flew high above the planet’s equatorial plane, the spacecraft’s camera took 36 images of Saturn, a dozen each using the various red, green, and blue filters used to create color images. The images were transferred back to Earth and put on the Cassini raw images page. Gordon Ugarkovic from Croatia, and a member of the image editing wizards at UnmannedSpaceflight.com, grabbed the raw files, processed them, then assembled the images into this jaw-dropping mosaic.
This is a view from Saturn that we could never get from Earth; only a spacecraft orbiting the planet could take it.(...)
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Topsy-Turvy Aurora Caught On Astronaut’s Camera

Topsy-Turvy Aurora Caught On Astronaut’s Camera:
Topsy-Turvy Aurora Caught On Astronaut’s Camera
“The pic doesn’t do the northern lights justice. Covered the whole sky. Truly amazing!” wrote NASA astronaut Mike Hopkins on Twitter Oct. 9.
Isn’t that aurora facing the wrong way? Not if you’re in space!
NASA astronaut Mike Hopkins tweeted this picture from his perch on the International Space Station a few days ago. He sounds jazzed to be on his first mission: “Can’t believe this is really me from the Cupola and that I’ve been in space for almost 3 weeks now!” he wrote on Twitter Oct. 15.
We’d be pretty excited, too! Luca Parmitano (from the European Space Agency) is also on his first trip into space. In between their many experiments, the rookies must relish the opportunity to take pictures of the view. Which image of theirs below is your favorite? Did we miss any notable shots? Let us know in the comments.
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Hubble’s Latest View Shows Comet ISON Still Intact, Fairly Average

Hubble’s Latest View Shows Comet ISON Still Intact, Fairly Average:
Hubble's view of Comet ISON on Oct. 9, 2013. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
Hubble’s view of Comet ISON on Oct. 9, 2013. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
We’ve been showing images of Comet ISON from amateur astronomers around the world, but now that NASA is back from the government shutdown, here’s more proof that the comet is still intact and has not disintegrated … despite some predictions to the contrary. This image was taken on October 9.
NASA explains:
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Tilt-A-Whirl! A Tale Of Strange Planetary Orbits In Kepler-56

Tilt-A-Whirl! A Tale Of Strange Planetary Orbits In Kepler-56:
Artist's conception of Kepler-56, which has two planets orbiting at a tilt to their star despite the fact that scientists found no bigger gas giant planet to alter their orbits. Credit: Daniel Huber/NASA's Ames Research Center.
Artist’s conception of Kepler-56, which has two planets orbiting at a tilt to their star despite the fact that scientists found no “hot Jupiter” to alter their orbits. Credit: Daniel Huber/NASA’s Ames Research Center.
A faraway group of planets is puzzling scientists. Newly reported Kepler-56′s system has three planets — two smaller ones close by, and a much larger one further out. The inner planets are orbiting at a tilt to the equator of the host star.
Scientists have seen that tilt before in other systems, but they thought you would need a “hot Jupiter” — a huge gas giant planet close to the star — to make that happen. Here, that’s not the case. The outer planet’s gravity, distant as it is, is pulling the two planets into their tilted orbits.
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NASA: Less Than 1% Chance That Asteroid 2013 TV135 Will Hit Earth In 2032

NASA: Less Than 1% Chance That Asteroid 2013 TV135 Will Hit Earth In 2032:
Diagram of the orbit of orbit of asteroid 2013 TV135 (in blue), which scientists are 99.998% certain will not hit Earth. Calculations are based on one week of observations since the asteroid's discovery Oct. 8, and astronomers expect further observations will reduce or eliminate the observed impact probability. Credit: NASA/JPL-Caltech
Diagram of the orbit of orbit of asteroid 2013 TV135 (in blue), which scientists are 99.998% certain will not hit Earth. Calculations are based on one week of observations since the asteroid’s discovery Oct. 8, and astronomers expect further observations will reduce or eliminate the observed impact probability. Credit: NASA/JPL-Caltech
We’ll skip straight to the good news: NASA says Earth is likely safe from Asteroid 2013 TV135. Calculations put the newly discovered asteroid’s chances of hitting the planet in 2032 at incredibly small — 1 in 63,000 — despite some alarmist news reports.
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Astronomer’s Map Dark Matter Throughout the Entire Universe

Astronomer’s Map Dark Matter Throughout the Entire Universe:
Full sky map of the cosmic microwave background. The color red indicates a cool spot while the color blue indicates a hot spot. Image credit: NASA.
Full sky map of the cosmic microwave background. The color red indicates a cool spot while the color blue indicates a hot spot. Image credit: NASA.
Warped visions of the cosmic microwave background – the earliest detectable light – allow astronomers to map the total amount of visible and invisible matter throughout the universe.
Roughly 85 percent of all matter in the universe is dark matter, invisible to even the most powerful telescopes, but detectable by its gravitational pull.
In order to find dark matter, astronomers look for an effect called gravitational lensing: when the gravitational pull of dark matter bends and amplifies light from a more distant object. In its most eccentric form it results in multiple arc-shaped images of distant cosmic objects.
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Planck Enters Retirement Shortly; This Picture Shows Just Some Of Its Views

Planck Enters Retirement Shortly; This Picture Shows Just Some Of Its Views:
A March 2013 picture of the Shapley Supercluster from the European Space Agency's Planck observatory. ESA describes it as
A March 2013 picture of the Shapley Supercluster from the European Space Agency’s Planck observatory. ESA describes it as “the largest cosmic structure in the local Universe.” Credit: ESA & Planck Collaboration / Rosat/ Digitised Sky Survey
With two days left before Planck switches off forever, the European Space Agency re-posted this beautiful image the telescope recently assisted in taking. It shows the Shapley Supercluster, which ESA describes as the biggest cosmic structure in our neighborhood.
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How to See This Season’s “Other” Comet: 2P/Encke

How to See This Season’s “Other” Comet: 2P/Encke:
Comet 2P/Encke as imaged by Damian Peach on October 12th. (Credit: D. Peach)
Comet 2P/Encke as imaged by Damian Peach on October 12th. Taken with a 20″ CDK telescope and a FLI Proline PL11002 Colr CCD camera; LRGB: L: 6×2 minutes, RGB exposure: 1×2 minutes.  (Credit: D. Peach)
2013 may well go down as “The Year of the Comet.” After over a decade punctuated by only sporadic bright comets such as 17P/Holmes, C/2011 W3 Lovejoy and C/2006 P1 McNaught, we’ve already had two naked eye comets visible this year by way of C/2012 F6 Lemmon and C/2011 L4 PanSTARRS. And of course, all eyes are on Comet C/2012 S1 ISON as it plunges towards perihelion on U.S. Thanksgiving Day, November 28th.
But there’s an “old faithful” of comets that’s currently in our solar neighborhood, and worth checking out as well.(...)
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A Colorful Art Project You Can Only Do In Space

A Colorful Art Project You Can Only Do In Space:
On Expedition 27 in May 2011, NASA astronaut Cady Coleman participated in the Auroral Oval Spiral Top experiment. Credit: NASA
On Expedition 27 in May 2011, NASA astronaut Cady Coleman participated in the Auroral Oval Spiral Top experiment. Credit: NASA
Wow! That was our reaction to seeing this picture (and others) of a light show aboard the International Space Station. After confirming with NASA that the images circulating lately on social media are real, we were directed to the Japan Aerospace Exploration Agency (JAXA), who co-ordinated this experiment.
The work is called “Auroral Oval Spiral Top” and was done in the Kibo module on May 12, 2011, JAXA said. This was the second version of the experiment, which initially ran April 30, 2009 during Expedition 19.
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Astrophoto: Hubble in the Bubble

Astrophoto: Hubble in the Bubble:
The Bubble Nebula, also known as NGC 7635, seen in the Hubble Palette. Credit and copyright: Terry Hancock.
The Bubble Nebula, also known as NGC 7635, seen in the Hubble Palette. Credit and copyright: Terry Hancock.
Here’s a beautiful look at the Bubble Nebula, taken by astrophotographer Terry Hancock using what’s known as the “Hubble Palette,” — imaging in very narrow wavelengths of light using various filters. This allows very subtle details to be revealed, things that the human eye cannot see. Terry has been working on this one for a while — since mid-August — but the results are spectacular!
Terry took images from his “DownUnder Observatory” in Fremont, Michigan. He explains the image and techniques he used:
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Proposed Balloon Ride Would Let You See The Blackness Of Space

Proposed Balloon Ride Would Let You See The Blackness Of Space:
Artist's conception of World View's planned balloon mission some 19 miles (30 kilometers) up. Credit: World View Enterprises Inc.
Artist’s conception of World View’s planned balloon mission some 19 miles (30 kilometers) up. Credit: World View Enterprises Inc.
Doesn’t that look fun? A startup company is proposing to send customers 19 miles (30 kilometers) into the air via balloon, where they can linger for two hours and look at the curvature of the Earth and experience a black sky. While it’s not high enough to qualify as a spaceflight, the listed ticket price may be a little more affordable for space enthusiasts: $75,000.
Don’t get too excited yet — the project appears to be in very early stages, and no “first flight” date is listed yet. But there are some interesting notes for those looking for space and science experience in the company.
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There Are Now Officially Over 1,000 Confirmed Exoplanets!

There Are Now Officially Over 1,000 Confirmed Exoplanets!:
More than 1,000 exoplanets have been confirmed and cataloged (PHL @ UPR Arecibo)
More than 1,000 exoplanets have now been confirmed and cataloged (PHL @ UPR Arecibo)
It was just last week that we reported on the oh-so-close approach to 1,000 confirmed exoplanets discovered thus far, and now it’s official: the Extrasolar Planets Encyclopedia now includes more than 1,000! (1,010, to be exact.)
21 years after the first planets beyond our own Solar System were even confirmed to exist, it’s quite a milestone!
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Comet LINEAR Suddenly Brightens with Outburst: How to See It

Comet LINEAR Suddenly Brightens with Outburst: How to See It:
Comet C/2012 X1 LINEAR as imaged by Howes, Guido & Nicolini on Monday, October 21st. (Credit: remanzacco.blogspot)
Comet C/2012 X1 LINEAR as imaged by Howes, Guido & Nicolini on Monday, October 21st. (Credit: remanzacco.blogspot).
It’s swiftly becoming an “all comets, all the time” sort of observing season. The cyber-ink was barely dry on our “How to Spot Comet 2P/Encke” post this past Monday when we were alerted to another comet that is currently in the midst of a bright outburst.
That comet is C/2012 X1 LINEAR. Discovered on December 8th, 2012 by the ongoing Lincoln Near Earth Asteroid Research (LINEAR) survey based in Socorro, New Mexico, Comet X1 LINEAR was expected to peak out at about +12th magnitude in early 2014.(...)
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Sunday, October 6, 2013

Super-Earth’s Probable Water Atmosphere Revealed In Blue Light

Super-Earth’s Probable Water Atmosphere Revealed In Blue Light:
Artist's conception of GJ 1214 b passing across its host star, as viewed in blue light. Credit: NAOJ
Artist’s conception of GJ 1214 b passing across its host star, as viewed in blue light. Credit: NAOJ
Playing with the filters on a telescope can show us amazing things. In a recent case, Japanese astronomers looked at the star Gilese 1214 in blue light and watched its “super-Earth” planet (Gliese 1214 b, or GJ 1214 b) passing across the surface from the viewpoint of Earth. The result — a probable detection of water in the planet’s atmosphere.
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See Venus and the Moon Together in the Sky on September 8

See Venus and the Moon Together in the Sky on September 8:
See Venus and the Moon Together in the Sky on September 8
A close conjunction of Venus and the crescent Moon as seen on February 27th, 2009. Over exposed slightly, to bring out Earthshine on the dark limb of the Moon. (Photo by author).
Sky watchers worldwide are in for a treat Sunday evening September 8, 2013 as the waxing crescent Moon passes near the dazzling planet Venus. And for a select few, the Moon will actually pass in front of Venus, in what is known as an occultation.(...)
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Supermassive Black Holes Keep Galaxies From Getting Bigger

Supermassive Black Holes Keep Galaxies From Getting Bigger:
Radio telescope image of the galaxy 4C12.50, nearly 1.5 billion light-years from Earth. Inset shows detail of location at end of superfast jet of particles, where a massive gas cloud (yellow-orange) is being pushed by the jet. (Credit: Morganti et al., NRAO/AUI/NSF)
Radio telescope image of galaxy 4C12.50, nearly 1.5 billion light-years from Earth. Inset shows detail of location at end of superfast jet of particles, where a massive gas cloud (yellow-orange) is being pushed by the jet. (Credit: Morganti et al., NRAO/AUI/NSF)
It’s long been a mystery for astronomers: why aren’t galaxies bigger? What regulates their rates of star formation and keeps them from just becoming even more chock-full-of-stars than they already are? Now, using a worldwide network of radio telescopes, researchers have observed one of the processes that was on the short list of suspects: one supermassive black hole’s jets are plowing huge amounts of potential star-stuff clear out of its galaxy.
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Watch Live on September 29: Orbital’s Cygnus Capsule Rendezvous with ISS

Watch Live on September 29: Orbital’s Cygnus Capsule Rendezvous with ISS:
Artist rendering of Cygnus spacecraft approaching the International Space Station. Credit: Orbital Sciences Corp.
Artist rendering of Cygnus spacecraft approaching the International Space Station. Credit: Orbital Sciences Corp.
NASA and Orbital Sciences Corporation have announced a new date and time for the targeted arrival and berthing of the Cygnus spacecraft for its demonstration cargo resupply mission to the International Space Station. All the action will now take place on Sept. 29, a week later than originally planned, after a software glitch on the first rendezvous attempt, and a subsequent scheduling conflict due to the arrival of a Soyuz spacecraft with additional crew.
You can see the schedule of events below, as well as watch live on NASA TV’s UStream feed:
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First Cloudy Alien Planet Spotted From Earth

First Cloudy Alien Planet Spotted From Earth:
Cloud map of Kepler-7b (left) in comparison to Jupiter (right). Credit: NASA/JPL-Caltech/MIT
Artist’s conception of a cloud map of Kepler-7b (left) in comparison to Jupiter (right). Credit: NASA/JPL-Caltech/MIT
Call it cloudy with a low chance of meatballs. The alien world Kepler-7b — a very reflective world in big telescopes — has clouds in its upper atmosphere. And scientists have actually been able to map those out, despite the planet’s great distance from Earth (at least 1,000 light-years away.)
It’s the first time scientists have been able to map out clouds on a world outside of the solar system. If we can see clouds, then we can begin to think about what a planet’s climate will be, making this an important milestone in understanding the conditions on other worlds.
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What Does The Government Shutdown Mean For NASA?

What Does The Government Shutdown Mean For NASA?:
The MAVEN missions ‘Going to Mars’ campaign invites the public to submit names and poems which will be included on a special DVD. The DVD will be adhered to the MAVEN spacecraft and launched to Mars on Nov. 18, 2013. Credit: NASA/GSFC
The MAVEN Mars mission launch is among those activities that could be affected by the U.S. federal government shutdown. Credit: NASA/GSFC
A forthcoming NASA launch to Mars could be in danger of losing its launch window should a shutdown in the United States federal government that began today (Oct. 1) continue for a while. That’s just one of the ways in which NASA is affected amid a lapse of funding that is affecting all government agencies and an untold number of government contractors.
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This Very Old Cosmic Light Has A Bend To It

This Very Old Cosmic Light Has A Bend To It:
Artist's impression of how huge cosmic structures deflect photons in the cosmic microwave background (CMB). Credit: ESA and the Planck Collaboration
Artist’s impression of how huge cosmic structures deflect photons in the cosmic microwave background (CMB). Credit: ESA and the Planck Collaboration
Leftover radiation from the Big Bang — that expansion that kick-started the universe — can be bent by huge cosmic structures, just like other light that we see in the universe. While the finding seems esoteric at first glance, scientists say the discovery could pave the way for finding a similar kind of signal that indicate the presence of gravitational waves in the moments after the universe was born.
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Overnight Aurora Sets Sky On Fire, More Possible Tonight

Overnight Aurora Sets Sky On Fire, More Possible Tonight:
At around 10 p.m. last night, the northern sky was alive with colorful auroral patches and arcs. Details: 15mm lens at f/2.8, ISO 800 and 25 second exposure. Credit: Bob King
At around 10 p.m. last night, the northern sky was alive with colorful auroral patches and arcs. Details: 15mm lens at f/2.8, ISO 800 and 25 second exposure. Credit: Bob King
I’m writing this at 1:30 a.m. running on what’s powering the sky over northern Minnesota right now – auroral energy. Even at this hour, rays are still sprouting in the southern sky and the entire north is milky blue-white with aurora borealis. Frankly, it’s almost impossible to resist going out again for another look.
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