Archive for the ‘Chandra Space Telescope’ Category

“This Week In Space” – August 28, 2010

August 29, 2010

The latest edition of “This Week In Space” is now out.  Please watch!

Source: Hubble Space Telescope

We begin with an arrival of a spacecraft that aims to tell us how the universe formed.  The  2.1 billion dollar Alpha Magnetic Spectrometer arrived at Kennedy Space Center as it gets prepped for its flight to the Space Station. It will be mounted on the space station to search for antimatter, dark matter, and strange matter – and it will also search for cosmic rays.  It’s a spacecraft that almost never made it to space after being built.  The mission to fly it was canceled after the Columbia accident in 2003.  But AMS had some strong supporters in Congress, and NASA managers reshuffled plans to fly it.  It’s the last big piece station hardware to go up shuttle.  Principal Investigator Samuel Ting of the Massachusetts Institute of Technology has high hopes for the science that AMS will conduct on orbit.

We have checked and rechecked and double checked the detector, and we are now quite confident, we will stay on the space station, for its lifetime.  For the next 20 years when you look at space and see the space station, there is one very very precise detector to collect data.

AMS is scheduled to fly aboard Endeavour on what at the moment is the last scheduled space shuttle mission set for February 26th 2011.

But first things first, before STS-134 delivers the AMS to the station, Steve Lindsay and the STS-133 crew will be visiting the orbiting outpost on Discovery’s last flight to space.  That mission is currently slated to lift off November 1st.  OV-103 is currently in its Orbiter Processing facility undergoing final preps for rollover to the VAB on September 8th.  The media recently got a chance to take a look at some of cargo they’ll be taking up to the ISS – including Robonaut 2, as well as the Permanent Multipurpose Module and an Express Logistics Carrier filled with spare parts and supplies.  The crew was recently at KSC for a Crew Equipment Interface Test – that’s a last chance for the crew to personally look over the orbiter and payload before flight.  For these final missions, NASA is getting the public involved in selecting some of the wake-up songs that rouse the astronauts out of bed every morning on orbit.  Traditionally, crew members’ family and friends make the picks…but now you can get in on the action too.  Check out songcontest.nasa.gov for details.  And a final word before we leave shuttle behind, NASA has not yet officially announced whether or not the Atlantis will get one final flight next year, but they are kicking a prospective schedule.  You might want to pencil June 28, 2011 on your calendars for STS-135.  We’ll you know when you can ink that in.

International Space Station. Source: NASA

Meanwhile in space, things are getting back to normal and science activities have resumed now that the International Space Station’s radiator problems have been put to bed. With flight engineer Shannon Walker at the controls of the station’s robotic arm, astronauts Doug Wheelock and Tracy Caldwell Dyson conducted three marathon spacewalks to swap out a failed ammonia pump that shut down half the station’s cooling system for a couple of weeks earlier this month.  The spacewalkers hit some frustrating snags while trying to disconnect the broken pump, especially a balky ammonia line called M3 that repeatedly stuck in place, and leaked ammonia as well.   Afterward, Wheels said the secret to their ultimate success was going out the hatch with the right attitude about  unexpected  problems.

I think the greatest thing that I’ve learned on my earlier EVA’s is just to expect that, just take a deep breath, think about different ways that you can finesse the piece of hardware and listen to what your ground trainers are telling you from the ground, and don’t give up trying.  And so we kept at it.  M3 became my giant through this whole thing that I had to face out there.  And we did it together and we needed both of us on either end of the line to get it, to just find that sweet spot to mate it up and demate it as well.  So I don’t know it sort of became the villan for us, and we sort of needed a villan to fight against when we were out there and it became a real challenge for us and we were able to rise to the challenge as a team.

SpaceX has conducted a high-altitude drop test of its Dragon spacecraft designed to ferry cargo – and eventually crew – to the ISS.  An Erikson “Air Crane” helicopter dropped a Dragon test article at an altitude of 14,000 off the California coast to test the capsule’s parachute system  as well as recovery operations.   SpaceX says the exercise met 100% of test objectives.  SpaceX successfully launched a Falcon 9 rocket carrying a dummy Dragon spacecraft  into space in June.  The company is planning another launch later this year that will put an operational Dragon into orbit, and return it to Earth.

The Mars Science Laboratory rover – also known as Curiosity – continues to take shape in its clean room at NASA’s Jet Propulsion Lab.  Engineers have now attached its robotic arm.  It was so heavy that they had to hoist it  into place using a crane.  The arm is tipped with a suite of instruments including a camera, a spectrograph and a drill that will core out and deliver samples to other instruments on the rover’s deck.  Curiosity is set to launch to Mars late next year.

And speaking of Mars launches, it was thirty-five years ago that NASA launched the Viking missions to Mars – Viking 1 on August 20th and Viking 2 on September 9th, 1975.  Each probe consisted of an orbiter and lander.  In their day,  Viking 1 and 2 were the most successful interplanetary probes ever deployed to the red planet – beaming back color images of the Martian surface and scooping up soil samples for analysis.  It would be nearly 20 years before Mars Pathfinder returned for further exploration of the surface.

Artist's rendering of Kepler 9. Source: NASA

The holy grail for astrobiology buffs is finding an Earth-sized, Earth-like planet.  That hasn’t happened yet (we’ll be leading the show with it when that happens!) but there are a couple of interesting developments on the planet-hunting beat this week.  Scientists working with the Kepler spacecraft have identified a planetary system orbiting a sun-like star called Kepler 9.  The new solar system includes two Saturn-sized gas giants and possibly a slightly-larger-than-earth sized planet orbiting very close to the star.  No chance of Earth-like conditions though…it’s just too hot.   Also this week, researchers working with the European Southern Observatory announced they’ve identified a solar system with at least five and maybe as many as seven planets orbiting a sun-like star located 127 light years away in the constellation Hydrus.  And one of those two unconfirmed planets is thought to be roughly Earth-sized and also orbiting very close to its sun.  Again, too hot for life.  So we’ve got new solar systems breaking out all over.  No pale blue marbles though.

Erupting volcanoes have been in the news this summer – and no I am NOT going to try to pronounce the name of that volcano in Iceland.  But take a look a cosmic volcano, erupting out of the black hole at the center of galaxy M-87.  These images from the Chandra X-Ray Observatory combined with radio telescope data from the Very Large Array show the black hole blasting gas and energy out.  The good news – air travellers in Europe have nothing to worry about with this volcano – it’s 50 million light years away.

And finally, we leave you with this time-lapse video of earth from space, shot by NASA astronaut and Mr. “Saturday Morning Science” himself, Don Pettit.  I’ve spent my whole career in TV and I can tell you, most everything looks better in forward.  Turns out Earth is no exception.  Night is even cooler than day.  Check out those green auroras when they zip by…absolutely incredible.  Pettit is headed back for a second tour of duty on the ISS next year.  What are you going to wow us with next time, Don?  It’s going to be hard to top this!

Time for us to hit the stop/eject button for this week.  Thanks for watching…please check us out regularly.  Also, please think about tossing us a few bucks at spaceflightnow.com/twis, we’re kind of singing for our supper here with this show..send us an email twis@spacelfightnow.com,  tweet us @thisweekinspace. Check out the blog here.  Thanks so much to our sponsor, Binary Space.  We really appreciate your ongoing support.  Join us next time for all the news off the planet.  Miles O’Brien will be back next week – we’ll see you then.

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“This Week In Space” – August 14, 2010

August 15, 2010

Check out the latest edition of “This Week In Space.”

International Space Station Source: NASA

Hello and welcome – they call them quick disconnect valves – but apparently on the International Space Station – they don’t always live up to their name. One of them – that connected a faulty ammonia pump to the station’s cooling system sent NASA into a tiger team frenzy of troubleshooting and head scratching this week. first time they tried to disconnect it – it spring a huge leak of ammonia – nasty stuff…so they reattached it and then tried again on the next walk – at first it wouldn’t budge. But in the end, the solution was precisely what you or I would have done if it was a pipe under the sink at home – they shook the darn thing like crazy until it came free. Spacewalker Doug “Wheels” Wheelock employed the elbow grease – spacewalking sidekick Tracy Caldwell Dyson was at his side. It was the second spacewalk to replace the pump and get that cooling system back on-line. When it failed – the station still had one other set of operative radiators – but the reduced capability created a significant brown out for the 6 person crew.

Veteran astronaut and spacewalker Dave Wolf was helping lead the effort on the ground to figure out how to solve case of the stubborn valve. I spoke with him via Skype.

Former NASA Administrator Sean O’Keefe and his teenage son Kevin survived a horrific plane crash in Alaska this week that killed five people, including former senator Ted Stevens.  They were on a fishing trip when the amphibious twin otter they were in plowed  into the side of a mountain in bad weather.  Both O’Keefes are banged up pretty badly but are expected to survive. Sean served as NASA Administrator from 2002 to 2005 – he was sent there by the Bush White House to tighten the reins on the space station budget. He ended up leading the agency through the Columbia accident – and offered up a text book example of expert crisis management. Sean was the man who signed on to the idea of sending yours truly to space – an idea that ended with the loss of Columbia. He is a good friend – and I wish him and Kevin a speedy recovery.

A dawn rocket launch from the Cape Canaveral Air Force Station lit up the sky over central Florida Saturday.  That’s an Atlas V rocket, and the payload is the AEHF-1 satellite.  Its one of what will be a network of four military satellites designed to provide global, secure, protected and jam-resistant communications for our armed forces.  Hopefully our troops will have better communication than i get with AT&T on my iPhone.

Good news Space Tweeps. – it’s official NASA will hold another tweet-up at KSC for the next shuttle launch – that’s STS-133, currently scheduled for November 1 (but you knew that).  They are fantastic events – and if you are prone to tweet – you really should put your 140 characters in the ring. This is a good way to satisfy your assignment to see a shuttle launch before it is too late.  Registration opens at noon on Tuesday, August 24, and closes at noon on Wednesday, August 25.  If you want to know more, go to www.nasa.gov/tweetup.

Hard to believe it’s now been six years since the Cassini spacecraft arrived at Saturn. And it is still a very busy space probe. So busy it just got another extension – through 2017 – giving it a chance to observe the summer solstice in Saturn’s northern hemisphere.  Here’s a cool new movie from Cassini.   The spacecraft was getting some close-up images of Saturn’s F-ring, and purely by chance captured these images of a globular star cluster passing though the field of view.  That’s NGC 5139, or Omega Centauri – nearly 16 thousand light years away.

As long as we are talking clusters – here’s a long exposure Hubble Space Telescope image of a galaxy in the Coma Cluster, 320 million light years away.  this is a spiral galaxy called NGC 9411 captured face-on.  And the Hubble folks have all kinds of questions about this picture of  NGC 4696.  This galaxy is not a perfect spiral – in fact it curls around on itself, kind of like a question mark.   Astronomers are scratching their heads about it – they have all kinds of questions about why it is  shaped so strangely, and what those filaments that stretch out from it might be. We’ll let you know if they find some answers…

Hubble is a third of the triumvirate of telescopes NASA called the Great Observatories – the other two are Chandra, and Spitzer – together these space scopes see the universe in the optical, x-ray and infrared wave lengths.  Now imagine if they could work together – like the Justice League –  This is a composite image – a super-space-scopes mash-up – of two colliding galaxies located about 62 million light years away.  The Chandra data is in blue, the Hubble data in gold and brown, and Spitzer data in red.  These so-called Antennae galaxies started colliding about 100 million years ago…and they are home to highly active star-forming regions. to infinity and beyond indeed!

Mars. Source: Hubble Space Telescope

Two anniversaries worth noting this week.  Fifty years ago, NASA launched Echo-1, it’s first communications satellite.  It was basically a big mylar balloon – able to bounce television, radio and TV signals cross-country and even across continents.  And five years ago, the Mars Reconnaissance Orbiter launched from Cape Canaveral.  MRO has become a workhorse for NASA – imaging the surface of Mars with unprecedented clarity, scanning for minerals and water, monitoring Martian weather, and serving as a communications relay for robotic missions on the surface.

Which brings us to our favorite simulated Mars mission – well I guess it’s the only simulated Mars mission – you know it by now – 6 men entered a human sized hamster habitat in Moscow – and will spend 520 days there pretending to go to Mars, explore the surface and then come back. We have now gone past the seventy day mark – which means they are about 15 percent done! and the video diaries they are posting on YouTube show no signs of reality show style discontent. Here is Romain Charles showing one of the…er…highlights – air sampling:

So Romain what’s up with the white socks and sandals and the wife beater t-shirt? I think that is a fashion don’t on Mars as well…just saying.

And on that note – I am outta here – you can email us a twis@spaceflightnow.com – or tweet us @thisweekinspace – the blog version of this podcast is at milesobrien.com. But here is the most important thing – please go to spaceflightnow.com/twis – and send us a few bucks – we really need you help – and if you don”t i’ll start wearing a wife beater – and white socks and sandals. Is that extortion? Sorta, I suppose. thanks to our most loyal sponsor ever – Binary Space – we really appreciate your support. We’ll see ya next time.