Posted on by Nancy Atkinson

Zoom Zoom! Progress Ship Goes from Launch to Docking in 6 Hours

The Progress 49 cargo craft ship went from zero to 28,000 km/h in about 8 minutes — as it usually does — but it then caught up and docked to the International Space Station in super-fast time, in less than six hours. This is the second Progress to take advantage of the abbreviated four-orbit rendezvous with the ISS which uses additional firings of the Progress engines early in its orbital flight to expedite the time required for a Russian vehicle to reach the station. Other flights take about 2 days to reach the ISS.

Launch of the Progress 49 cargo ship from Kazakhstan. Screenshot via NASA TV.

The launch took place at 7:41 UTC (3:41 a.m. EDT) from Kazakhstan and the docking occurred at 13:33 UTC (9:33 a.m. EDT) on Wednesday. The resupply ship is filled with 2,050 pounds of propellant, 62 pounds of oxygen, 42 pounds of air, 926 pounds of water and 2,738 pounds of spare parts, crew supplies and equipment. It will stay docked to the space station until April 2013.

Following the launch, ISS commander Suni Williams radioed to Mission Control, “Happy Halloween, and hopefully our little trick-or-treat vehicle is on its way. We just got to see it out the window and that’s pretty special.”

The space station crew is currently busy getting ready for a spacewalk on Thursday to try and determine the problem with a coolant leak in one of the solar arrays. (They may need to call in Georgi LaForge for reinforcements!)

Williams and Japanese astronaut Akihiko Hoshide will conduct the spacewalk and they hope to deploy a spare radiator and reconfigure coolant lines to close off a radiator that may have been hit by a meteoroid or piece of space debris. It is a very small leak, so it may take several weeks for flight controllers to find out if they have located the area of the leak. If this doesn’t solve the problem, the next plan of attack is to replace a pump.

The spacewalk is scheduled to begin around 12:15 UTC (8:15 a.m. EDT) on Thursday, November 1.

The fast-track flight to the ISS is being considered for the manned Soyuz vehicles in the future to improve crew comfort and extend the life of the Soyuz return vehicle. Russian cosmonaut Gennady Padalka has been quoted as saying it is every cosmonaut’s dream to only have a 6-hour flight in the cramped Soyuz!

Posted on by Nancy Atkinson

Beautiful Star Cluster Looks Surprisingly Youthful

This view of the globular cluster NGC 6362 was captured by the Wide Field Imager attached to the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile. Credit: ESO/J. Emerson/VISTA. Acknowledgment: Cambridge Astronomical Survey Unit

Past observations of globular star clusters have revealed that they are some of the oldest objects in the Universe, with most of the stars originating around the same time — some are more than 10 billion years old. And this new image of NGC 6362, a ball of stars found in the constellation of Ara, definitely shows its age, with many yellowish stars in the cluster that have already run through much of their lives and become red giant stars. But astronomers are seeing some curious stellar activities in this cluster that appears to indicate younger, bluer stars are part of the mix, too.

So how can this be, since all the stars in a cluster formed at the same time from the same cloud of gas?

NGC 6362 is home to many blue stragglers — old stars that succeed in passing for a younger age. Blue stragglers are bluer and more luminous — and hence more massive — than they should be after ten billion years of stellar evolution. Blue stars are hot and consume their fuel quickly, so if these stars had formed about ten billion years ago, then they should have fizzled out long ago. How did they survive?

Right now astronomers have two main theories about blue stragglers and how they maintain their youthful appearance: stars colliding and merging, and a transfer of material between two companion stars. The basic idea behind both of these options is that the stars were not born as big as we see them today, but that they received an injection of extra material at some point during their lifetimes and this then gave them a new lease of life.

This new image shows the entire cluster against a rich background of the carpet of stars in the Milky Way. It can be easily seen by amateur astronomers with a small telescope.

This video zooms into the cluster, starting with views from the La Silla Observatory and ending with a detailed view of the center from the Hubble Space Telescope:

Source: ESO

Posted on by Nancy Atkinson

Curiosity Rover Makes First X-Ray Analysis of Martian Soil

This graphic shows results of the first analysis of Martian soil by the Chemistry and Mineralogy (CheMin) experiment on NASA’s Curiosity rover. Credit: NASA/JPL-Caltech/Ames

Soil scooped up by the Curiosity rover has been analyzed by instruments on board similar to what would be used by geologists on Earth in a laboratory, and the results show the mineralogy of Martian soil is fairly Earth-like, with evidence of past interaction with water. The minerals were identified in the first sample of Martian soil put inside the Chemistry and Mineralogy instrument (CheMin), which were zapped with X-Rays to provide accurate identification of minerals.

“This Martian soil that we’ve analyzed on Mars just this past week appears mineralogically similar to some weathered basaltic materials that we see on Earth,” said David Bish, a CheMin co-investigator with Indiana University, during a press briefing on Tuesday, saying the soil appears similar to weathered basaltic soils of volcanic origin in Hawaii.

The results weren’t too surprising, the team said

Other Earth-like references have been made about Mars recently: In an op-ed article in the New York Times, MSL project scientist John Grotzinger said some of the rocks Curiosity has studied early in the mission are reminiscent of rocks Grotzinger “skipped” across a stream near his childhood home near Huntingdon Valley, Pennsylvania. And a team of researchers from Spain said the rocks where Curiosity is roving are similar to those found in Cuatro Ciénegas, a Mexican valley that may be an Earthly analog what Gale Crater was like millions of years ago.

Curiosity’s mission is to determine if Gale Crater ever offered environmental conditions favorable for microbial life, and so identifying minerals in rocks and soil is crucial to assess the history of this region. Each mineral records the conditions under which it formed.

CheMin uses X-ray diffraction, the standard practice for geologists on Earth using much larger laboratory instruments, and this is the first time this method has been used on another planet. It provides more accurate identifications of minerals than any method previously used on Mars. X-ray diffraction reads minerals’ internal structure by recording how their crystals distinctively interact with X-rays.

“Our team is elated with these first results from our instrument,” said Blake. “They heighten our anticipation for future CheMin analyses in the months and miles ahead for Curiosity.”

A MastCam image of Rocknest. Credit: NASA/JPL-Caltech/MSSS

Curiosity scooped dust and sand in the small dunes named Rocknest. The sample was processed through a sieve to exclude particles larger than 0.006 inch (150 micrometers), roughly the width of a human hair. The sample has at least two components: dust distributed globally in dust storms and fine sand originating more locally.

“Much of Mars is covered with dust, and we had an incomplete understanding of its mineralogy,” said Bish. “We now know it is mineralogically similar to basaltic material, with significant amounts of feldspar, pyroxene and olivine, which was not unexpected. Roughly half the soil is non-crystalline material, such as volcanic glass or products from weathering of the glass. ”

Bish said, “So far, the materials Curiosity has analyzed are consistent with our initial ideas of the deposits in Gale Crater recording a transition through time from a wet to dry environment. The ancient rocks, such as the conglomerates, suggest flowing water, while the minerals in the younger soil are consistent with limited interaction with water.”

These results are consistent with the previous determination by the MSL science team that ankle-to-hip-deep water once vigorously flowed in an ancient streambed in Gale Crater.

Source: JPL

Posted on by Jason Major

From Eternity to Here: The Amazing Origin of our Species (in 90 Seconds)

From the initial expansion of the Big Bang to the birth of the Moon, from the timid scampering of the first mammals to the rise — and fall — of countless civilizations, this fascinating new video by melodysheep (aka John D. Boswell) takes us on a breathless 90-second tour through human history — starting from the literal beginnings of space and time itself. It’s as imaginative and powerful as the most gripping Hollywood trailer… and it’s even inspired by a true story: ours.

Enjoy!

(Video by melodysheep, creator of the Symphony of Science series.)

Posted on by Nancy Atkinson

Astrophoto: Spooky Fingers Reach Out into Space

Dark shadows and dust in VdB 4. Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona

It’s the Case of the Phantom Phalanges! Spooky fingers reach up from the dark realms of space in this new image from Adam Block of the Mount Lemmon Sky Center. The image shows a ghostly view of VdB 4, which is a reflection nebula associated with a young open star cluster NGC 225, often called the Sailboat Cluster. Click here to see the entire field of view — which includes a dark area that looks like a spooky Halloween spider. This image was taken in October, 2012 with the 32-inch Schulman Telescope (RCOS) at Mount Lemmon, using a SBIG STX16803 CCD Camera. Thanks to Adam Block for sharing this eerie image!

Want to get your astrophoto featured on Universe Today? Join our Flickr group or send us your images by email (this means you’re giving us permission to post them). Please explain what’s in the picture, when you took it, the equipment you used, etc.

Posted on by Nancy Atkinson

Space-O-Lanterns: 7 Minutes of Terror/Dragon Edition

Need some inspiration for carving your Halloween pumpkin? Look no further. Last year we featured some amazing feats of Halloween pumpkin carving, and this year the field is just as impressive. And what could be scarier than seven minutes of terror and Dragons? This year many carvers went with a Mars Science Laboratory theme, as did Will Gater, who brandished his carving knife in this outstanding re-creation of Curiosity being lowered by the Skycrane.

See more, below:

Liz Warren (@spasmunkey) carved an eery view of Curiosity on Mars.

Curiosity lasering a rock “for science!” said carver and planetary scientist Dr. Sarah Horst (@PlanetDr)

Someone at Johnson Space Center (@NASA-Johnson) is pretty handy with a pumpkin carving knife and deftly paid tribute to SpaceX’s recent success with the Dragon capsule visiting the International Space Station and safely returning cargo and experiments.

And here’s a timelapse video of a pumpkin artist creating a tribute to the recent Red Bull Stratos jump from the stratosphere:

Posted on by Nancy Atkinson

Satellites Provide 3-D Views and More of Hurricane Sandy

Hurricane Sandy as viewed by the TRMM Precipitation Radar at 2:20 EDT on Oct. 28, 2012. Credit: NASA

Satellite imagery and data has been invaluable in predicting the path and intensity of storms like Hurricane Sandy. Satellites like NASA’s Tropical Rainfall Measuring Mission (TRMM) can measure rainfall rates and cloud heights in tropical cyclones, and was used to create a 3-D image, above, to allow forecasters to look inside the hurricane, and predict fairly spot-on what locations would be affected the worst. There’s even a 3-D video view from the CloudSat satellite, and much more, including a stunning wind map, and this round-up from JPL of various satellite views of the storm. You can also see a slideshow of NASA satellite images and videos on the NASA Goddard Flickr site.

This exemplifies just one reason why space exploration is important, and why people are maybe now starting to realize how our failure to plan ahead and invest in weather satellites may become a problem. Without those eyes in the sky we are blind to the minute-to-minute and hour-to-hour development of storms and weather, not to mention overall study of the climate.

Below is a stunning high-speed satellite view from the GOES-14 satellite:

Focusing just on the area of the storm, the GOES-14 Super Rapid Scan Operation (SRSO) captures infrared and visible data every minute and relays that information to forecasters on the ground. This animation shows the GOES-14 SRSO for October 29, 2012 as Hurricane Sandy approached the U.S. coastline.

Posted on by Fraser Cain

Virtual Star Party – Oct. 28, 2012: Hurricane Sandy Edition

Another West Coast centric edition of the Virtual Star Party. Not because of a lack of volunteers, but because while we were broadcasting, Hurricane Sandy was tearing up the East Coast of the United States. And as you can probably guess, hurricanes don’t make for great stargazing.

Still, we had a wonderful night, with views of the full Moon, California Nebula, Veil Nebula, Crescent Nebula, Ring Nebula, Albiero, Double Cluster, M33, Cave Nebula, Wizard Nebula, Andromeda Galaxy, and many more objects.

Click here to see all the pictures from last night’s event.

Astronomers: Mike Chasin, Stuart Forman, Gary Gonella, and Roy Salisbury.

Commentators: Dr. Thad Szabo, Dr. Phil Plait, Scott Lewis.

Host: Fraser Cain

We hold our Virtual Star Party every Sunday night when it gets dark on the West Coast, and broadcast live on Google+. Circle the Virtual Star Party page on G+ to get a notification of the event.

Posted on by Nancy Atkinson

Video: Hurricane Sandy Seen by Space Station Astronauts

Here’s the view of Hurricane Sandy from an altitude of 254 statute miles from external cameras on the International Space Station. This video was shot as the ISS flew over the US’s eastern seaboard at 12:52 Eastern time October 29, 2012. Sandy has yet to officially make landfall, but the huge storm is already battering a region that makes up the most densely populated area of the US. The combination of three different storms has caused it to be dubbed as “Frankenstorm,” but it could turn into a “Blizzicane” as a winter storm merges with Sandy. The hurricane itself is strengthening as it barrels toward a landfall along the New Jersey coastline.

Below is video of the ISS pass at 11:16 a.m on Monday:

At the time of the flyover, Sandy was located 420 km (260 miles) south-southeast of New York City, moving north-northwest at 18 miles an hour with winds measured at 90 miles an hour as a Category 1 hurricane, according to the National Hurricane Center.

The huge slow moving combination of storms stretches about 1,600 km (1,000 miles) from north to south and significant impacts of storm surge and flooding are expected, with at least 7-10 inches of rain. This comes along with a snow advisory in some regions, creating a “Blizzicane” in the mountains of West Virgina, with 2-4 feet of snow predicted.

Forecasters are predicting this to be a multi-billion dollar storm disaster.

Here are some recent images of the storm:

Satellite View of Hurricane Sandy on Oct. 29 at 9:10 EDT by NOAA’s GOES-13 satellite.

Hurricane Sandy Viewed in the Dark of Night. Image acquired by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite around 2:42 a.m. Eastern Daylight Time (06:42 Universal Time) on October 28, 2012.

For more images, see the Goddard Space Flight Center’s Flickr page.

Posted on by Nancy Atkinson

Astronomers Uncover a Crime of Galactic Proportions

As the Milky Way rises over the horizon at the European Southern Observatory, its companion galaxies also come into view. Credit: ESO/Y. Beletsky

A previously undetected heist of stars was uncovered by astronomers who were actually looking for why an unexpected amount of microlensing events were being seen around the outskirts of the Milky Way. Instead, they found the Large Magellanic Cloud (LMC) had been stealing stars from its neighbor, the Small Magellanic Cloud (SMC), leaving behind a trail of stars. Although the crime was likely committed hundreds of milllions of years ago during a collision between the two galaxies, the new information is helping astronomers to understand the history of these two galaxies that are in our neighborhood.

“You could say we discovered a crime of galactic proportions,” said Avi Loeb of the Harvard-Smithsonian Center for Astrophysics.

The Large Magellanic Cloud almost got away with it, if it wasn’t for those meddling astronomers….

Astronomers were originally monitoring the LMC to hunt for the reason for the unexpected microlensing events. Their initial hypothesis was that massive compact halo objects, or MACHOs were causing the effect, where a nearby object passes in front of a more distant star. The gravity of the closer object bends light from the star like a lens, magnifying it and causing it to brighten. The MACHOs were thought to be faint objects, roughly the mass of a star, but not much is known about them. Several surveys looked for MACHOs in order to find out if they could be a major component of dark matter – the unseen stuff that holds galaxies together.

In order for MACHOs to make up dark matter, they must be so faint that they can’t be directly detected. So, the team of astronomers hoped to see MACHOs within the Milky Way by lensing distant LMC stars.

“We originally set out to understand the evolution of the interacting LMC and SMC galaxies,” said lead author of a new paper on the results, Gurtina Besla of Columbia University. “We were surprised that, in addition, we could rule out the idea that dark matter is contained in MACHOs.”

“Instead of MACHOs, a trail of stars removed from the SMC is responsible for the microlensing events,” said Loeb.

Only a fast-moving population of stars could yield the observed rate and durations of the microlensing events. The best way to get such a stellar population is a galactic collision, which appears to have occurred in the LMC-SMC system.

“By reconstructing the scene, we found that the LMC and SMC collided violently hundreds of millions of years ago. That’s when the LMC stripped out the lensed stars,” said Loeb.

Their research also supports recent findings suggesting that both Magellanic Clouds are on their first pass by the Milky Way.

However, this isn’t a closed case. The evidence for the trail of lensed stars is persuasive, but they haven’t been directly observed yet. A number of teams are searching for the signatures of these stars within a bridge of gas that connects the Magellanic Clouds.

The simulation results will be published in the Monthly Notices of the Royal Astronomical Society.

Read the team’s paper: The Origin of the Microlensing Events Observed Towards the LMC and the Stellar Counterpart of the Magellanic Stream

Source: CfA