Book Review: “Our Mathematical Universe – My Quest for the Ultimate Nature of Reality”

Mathematics seems to be the bane of many people, and especially many authors. Editors will often say that putting any mathematical equation into a book will sideline it to a destiny of either a textbook or dust collector. So what is an author to do? It appears Max Tegmark plays this line by continually talking about mathematics but never actually using any in his book ‘Our Mathematical Universe – My Quest for the Ultimate Nature of Reality.’ From a publisher’s view, this is a keen gambit. From a reader’s point of view, there may be referrals to some fancy equations but the lack of mathematics serves to convey this author’s message very well.

Max Tegmark is a professor of physics at MIT and a leading expert on theories of the Universe. But he writes with aplomb about a subject of which few people have much grasp and fewer people can manipulate. In a nutshell, he runs through the tenants of extreme physics both in the time and size dimensions, that is, from quarks to galaxies and from the big bang to whatever string theory may have in store for us.

The tentative hypotheses defining our future drive most of the original work in this book. Specifically starting from the Uncertainty Principle, the author argues that all possibilities can and indeed will occur. Just try following along with his argument about a quantum machine gun to determine life and/or death (but don’t try this at home). He then goes on to argue that an infinite number of universes are needed to enable all these options. Next, and apparently his personal purpose of the book, is his appreciation that given these probability states and the finite representation for basic physical entities in our universe, such as the dark-energy density, then our universe and indeed any universe is equivalent to a mathematical structure. This prognosis is his rationale for entitling his book Our Mathematical Universe. He then goes on to claim that this underlying mathematical structure should be the much sought after Theory of Everything. However, he readily admits in his book that he hasn’t got all the details just yet.

While Tegmark has presumably written this book for the lay person, there is a strong sense of an academic grounding in the writing style. The subject is solidly technical with only the occasional interpose of the author’s personal life. There’s a bit about his family, though not much more than that he has one. There’s much more about the physicists that have touched upon his career as well as conferences he’s attended and papers that he’s written. But still, the feeling of being near textbook like does appear. Perhaps this is what makes this book a bit more of a challenge to read. It’s not the difficult prose but the author’s many thought experiments usually based upon mathematical arguments. Reading it requires hard thinking that puts into question your very existence and indeed whatever you may think the purpose may be of your existence. But the reading can be very rewarding even for the lay purpose who’s looking for the latest in cosmology and physics.

So, this book is what we get apparently when a professor has become tenured. It’s a solid personal view that has more to do with what they feel is correct than what is the social or academic norm. Tegmark admits to and writes of some very off norm points in his life. His book ‘Our Mathematical Universe – My Quest for the Ultimate nature of Reality’ may be his most off putting. But equally, he shows the true value of universities, where the best and brightest can advance the knowledge of our species for all to share and from which all profit.

Carnival of Space #345

This week’s Carnival of Space is hosted by our pal Ray Sanders at his Dear Astronomer blog.

Click here to read Carnival of Space #345.

And if you’re interested in looking back, here’s an archive to all the past Carnivals of Space.

If you’ve got a space-related blog, you should really join the carnival. Just email an entry to [email protected], and the next host will link to it. It will help get awareness out there about your writing, help you meet others in the space community – and community is what blogging is all about. And if you really want to help out, sign up to be a host. Send an email to the above address.

NASA ‘Game-Changing’ Space Propellant Tank To Stay Grounded For Now

As of 2014, NASA and Boeing are developing a propellant tank made of composite materials to hold cryogenic (low-temperature) gases in space. Initially slated for a 2018 test flight, NASA's 2015 budget will keep these tanks on the ground for the foreseeable future. Credit: NASA/MSFC/Emmett Given

A lighter and stronger “game-changing” tank that could have flown in space in a few years will be tested on the ground only, at least for now, according to the NASA budget and a few reports.

Last year, the agency conducted ground tests on a composite propellant tank intended to be better than its heavier counterparts, saving on launch costs. At the time, NASA said it was aiming to test this on a demonstration flight in 2018, but the new budget request says testing will stay grounded.

“Cryogenic Propellant Storage and Transfer will reformulate from a flight demonstration mission into a series of large-scale ground demonstrations supportive of future exploration propulsion needs and upgraded versions of SLS,” the agency stated, which could leave the door open for future tests in space.

The information is mentioned on Page 336 of the 713-page budget request document NASA released earlier this month. The budget is not finalized and is subject to approval from Congress. More high-profile cuts include the SOFIA airborne telescope and the Opportunity Mars rover mission.

The cryogenic change was mentioned in a few news reports, and then highlighted in a press release today (Thursday) from an advocacy group called the Space Development Steering Committee, who says these tanks would have been good for space-based refueling stations.

“Instead of trying out technologies designed for space where they count — in space — space gas station technologies are now going to be tested down here on Earth, where we already know how to make them function,” SDSC’s press release read. “Down here where we do not face the challenges of weightlessness and vacuum.  Down here where it’s useless.”

The SDSC includes the heads of the National Space Society, the Space Frontier Foundation, and the Mars Society, plus past astronauts and former NASA employees (among others). In November, the committee released an unfunded gas-tanks-in-space proposal to fuel missions to Mars.

What Happens When The Poles Flip?

What Happens When The Poles Flip?

Have you heard the terrifying news that the Earth’s poles are going to flip? What does “flipping” mean? And if the Earth’s poles do flip, are we in any danger?

Have you heard the startling news that the Earth’s poles might flip? Perhaps in the response to a close pass from the mysterious Planet X? Are you imagining the entire Earth actually flipping over on its side or rotating upside down, possibly while Yakkity Sax plays in the background? When will this happen? Can this happen?

First, there’s no secret planet hurtling through the Solar System causing chaos and orbital disturbances. So could the Earth spontaneously physically flip over? Some planets have already been tilted and flipped.

Take a look at Uranus. Its orbital tilt is 98-degrees. We assume the planet started with the same tilt as the rest of the Solar System, and some event in the ancient past caused it to fall over. It could have collided with another planet, billions of years ago, or gravitational interactions with other giant planets pushed it over.

And then there’s Venus, its axial tilt is 177-degrees. That’s essentially upside down. Venus is turning in the opposite direction from every other planet in the Solar System. Standing on the surface of Venus, you would see the Sun rise in the West and set in the East. Astronomers don’t know why this happened, perhaps it was gravitational interactions or a collision with another planet.

To actually flip a planet off its axis would take an event so catastrophic that it would devastate the planet. Don’t worry, as far as we know, those kinds of events and interactions stopped happening billions of years ago.
That’s the good news. The Earth isn’t likely to just fall over, or get bashed on its side like an office tower under the might of Godzilla

Schematic illustration of Earth's magnetic field.   Credit/Copyright: Peter Reid
Schematic illustration of Earth’s magnetic field. Credit/Copyright: Peter Reid

Now what about those magnetic poles. On Earth, they can and do reverse on a regular basis. The Earth is often shown like a giant bar magnet, with a north magnetic pole and a south magnetic pole. Over vast periods of time, the Earth’s north pole becomes its south pole, and vice versa. Geologists measure the magnetic configuration of iron particles in ancient lava flows. in one part of the lava flow, the particles oriented with one magnetic configuration, and then in another, the particles were reversed. It turns out the planet reverses its polarity every 450,000 years, and the last reversal happened about 780,000 years ago. Which means it could happen in the next few thousand years.

If the Earth’s poles did reverse, what would happen to us? If the magnetic field disappeared entirely, the planet would be bathed in radiation from the Sun, which would likely cause an increase in cancer. But the Earth’s atmosphere would still protect us from majority of radiation.

What about mass extinctions? Scientists have wondered if there’s a link between them and magnetic reversals.
Fortunately for us, there doesn’t seem to be any connection. Whenever geomagnetic reversals happened in the past, it didn’t devastate life on Earth. So don’t worry about it.

There is a pretty good chance it won’t happen in our lifetime, and maybe not for hundreds of thousands of years. And even if the Earth’s poles flip, it wouldn’t be the end of the world. You might need to take a sharpie to your compass though.

Happy Equinox! – A Perfect Time to See the Zodiacal Light

Zodiacal light tilts upward from the western horizon and points at the Pleiades star cluster in this photo taken March 19, 2009. Clouds at bottom reflect light pollution from nearby Duluth, Minn. U.S. Credit: Bob King

Welcome to the first day of spring! If you have a clear night between now and April 1, celebrate the new season with a pilgrimage to the countryside to ponder the eerie glow of the zodiacal light. Look for a large, diffuse, tapering cone of light poking up from the western horizon between 90 minutes and two hours after sunset. While the zodiacal light appears only as bright as the Milky Way,  you’re actually looking at the second brightest object in the night sky. No kidding.  If you could crunch it all into a little ball, it would shine at magnitude -8.5, far brighter than Venus and bested only by the full moon.  

The zodiacal (Zo-DIE-uh-cull) light is centered on the plane of the solar system called the ecliptic. On late March nights, you can trace it from near the western horizon more than 45 degrees (halfway up the sky). Stellarium
The zodiacal (Zo-DIE-uh-cull) light is centered on the plane of the solar system called the ecliptic. This is the same band of sky where you’ll find the planets and zodiac constellations, hence the name. On late March nights, you can trace it from near the western horizon more than 45 degrees (halfway up the sky). Created with Stellarium

Sunlight reflecting off countless dust particles shed by comets and spawned by asteroid collisions creates the luminous cone of light. First time observers might think they’re looking at skyglow from light pollution but the tapering shape and distinctive tilt mark this glow as interplanetary dust.

This image of coronal and zodiacal light (CZL) was taken by the Clementine spacecraft, when the sun was behind the moon. The white area on the edge of the moon is the CZL, and the bright is Venus. (Credit: NASA)
Photo of coronal and zodiacal light taken by the Clementine spacecraft when the sun was hidden by the moon. At right is Venus. Clementine measured the brightness of the light to arrive at an integrated magnitude of -8.5. It also estimated dust particle sizes and origin. Credit: NASA

Like the planets, the dust resides in the plane of the solar system. In spring, that plane (called the ecliptic) tilts steeply up from the western horizon after sunset, “lifting” the chubby thumb of light high enough to clear the horizon haze and stand out against a dark sky for northern hemisphere observers.  In October and November the ecliptic is once again tilted upright, but this time before dawn. While the zodiacal light is present year-round, it’s usually tipped at a shallow angle and camouflaged by horizon haze. No so for skywatchers in tropical and equatorial latitudes. There the ecliptic is tilted steeply all year long, and the light can be seen anytime there’s no moon in the sky.

The combined glow of dust particles in the plane of the solar system reaching from the sun's vicinity to beyond Mars is responsible for creating the zodiacal light. Planets are shown as colored disks. Illustration: Bob King
The combined glow of dust particles in the plane of the solar system reaching from the sun’s vicinity out to at least Jupiter is responsible for creating the zodiacal light. Dust closest to the sun glow more brightly, the reason the bottom of the zodiacal light cone is brighter than the tip. Planets are shown as colored disks. Illustration: Bob King

Now through April 1 and again from April 17-30 are the best nights for viewing because the moon will be absent from the sky. The cone is widest near the western horizon and narrows as you direct your gaze upward and to the left. At its apex, where it touches the V-shape Hyades star cluster, it continues into the even fainter zodiacal band and gegenschein, but more about that in a moment. Sweep your gaze in broad strokes back and forth across the western sky to help you discern the Z-light’s distinctive conical shape. And be sure to look for something HUGE. This thing is a monster – indeed, one of the largest entities in the solar system.

Scanning electron microscope photo of an interplanetary dust particle collected by a high-altitude plane. It measures about 8 microns across or a little less than twice the size of a human red blood cell. Scientists recently discovered that dust particles can act as tiny factories to built water molecules. Credit: Donald Brownlee and Elmar Jessberger
Scanning electron microscope photo of an interplanetary dust particle collected by a high-altitude plane. It measures about 8 microns across or a little less than twice the size of a human red blood cell. Scientists recently discovered that dust particles can act as tiny factories to built water molecules. Credit: Donald Brownlee and Elmar Jessberger

Observers fortunate enough to live under or with access truly dark skies can trace the zodiacal light all the way across the sky as the zodiacal band.

Midway along its length, 180 degrees opposite the sun, a slightly brighter circular patch called the gegenschein (German for ‘counter glow’) embedded in the band.

Dust particles there get an extra brightness boost because they face the sun square on, much like the moon does when full. While I usually see only a section of the zodiacal band from my dark observing site, the gegenschein is often visible as a diffuse, hazy patch of light about 6 degree across a little brighter than the sky background.

Incredible 360-degree-wide view of morning and evening zodiacal light cones (far left and right), the fainter zodiacal band and the brighter spot of gegenschein. Click to enlarge. Credit: Miloslav Druckmuller and Shadia Habbal
Incredible 360-degree-wide view of morning and evening zodiacal light cones (far left and right), the fainter zodiacal band and the brighter spot of gegenschein (center) and the Milky Way photographed from Mauna Kea. Click to enlarge. Credit: Miloslav Druckmuller and Shadia Habbal

Dutch astronomer H. C. van de Hulst determined that the dust particles responsible for the zodiacal light and its cousins the zodiacal band and gegenschein are about 0.04 inch (1 mm) in diameter and separated, on average, by about 5 miles (8 km).

The gegenschein, an oval shaped brighter spot within the faint zodiacal band, is easiest to when due south and highest in the sky at local midnight (1 a.m. Daylight Saving Time). Currently it's in northern Virgo. Since the 'counter glow' will always be opposite the sun, it will slide down closer to Spica in April. Created with Stellarium
The gegenschein, an oval shaped brighter spot within the faint zodiacal band, is easiest to when due south and highest in the sky at local midnight (1 a.m. Daylight Saving Time). Currently it’s in northern Virgo. Since the ‘counter glow’ will always be opposite the sun, it will slide down closer to Spica in April. Created with Stellarium

The particles form a low density, lens-shaped cloud of dust that’s thickest within the plane of the solar system but in reality covers the entire sky but ever so thinly. Sunlight absorbed by the particles is re-emitted as invisible infrared (heat) radiation. This re-radiation robs the dust of energy, causing the particles to spiral slowly into the sun. Fresh dust from the vaporization of cometary ices as well as collisions of asteroids replenishes the cloud.

Zodiacal light cones in the fall morning sky (left) and in late March. Both times of year, we see the plane of the solar system tipped at high angle in the sky. Credit: Bob King
Zodiacal light cones in the fall morning sky (left) and in late March. Both times of year we see the plane of the solar system tipped at a high angle in the sky. Credit: Bob King

According to a study by Joseph Hahn and colleagues of the Clementine Mission data, comet dust accounts for the majority of the zodiacal dust within 1 a.u. (93 million miles) of the sun; a mix of asteroidal and comet dust makes up the remainder.

Stepping out on a spring evening to look at the zodiacal light, we can appreciate how small things can come together to create something grand.

Astronaut’s Mission Is To Snatch A Dragon Without Crashing The Canadarm

The robotic Canadarm2 is routinely used to berth spacecraft to the International Space Station, such as SpaceX's Dragon. Credit: NASA

When there’s a Dragon spacecraft coming your way at the International Space Station, you’d better be ready to grapple it with a robotic arm. For if there’s a crash, you will face “a very bad day”, as astronaut David Saint-Jacques points out in this new video (also embedded below the jump).

That’s why the Canadian (along with European Space Agency astronaut Andreas Mogensen) was doing robotics training this month at the Canadian Space Agency headquarters near Montreal. The most terrifying thing for astronauts must be the limited view as they do delicate maneuvers with the multi-million dollar Canadarm2.

“All you’ve got, really, while you’re working, is this workstation,” Saint-Jacques said. “You’ve got a couple of camera views to work from. You’ve got your hand controllers to move the arm, and you’ve got some computer displays, and a bunch of switches here on the left.”

“That’s all you’ve got,” he added. “You’ve really got to think ahead: how you’re going to maneuver this arm without crashing into anything.”

The video is the latest in a training series by Mogensen, who will go to the International Space Station in 2015. Saint-Jacques — a fellow 2009 astronaut class selectee — has not been assigned to a flight yet (at least publicly).

The first Canadarm, which cost about $100 million in late 1970s dollars, flew on the second shuttle flight in 1981. Canadarm2 was constructed for space station construction in the 2000s, and is still used today for spacewalks.

Berthing spacecraft is reportedly not what it was originally designed for, but the robotic arm has proved an able tool to pick up the Dragon spacecraft and other visitors to the station.

Canadian astronaut David Saint-Jacques at the simulator used to train astronauts on Canadarm2, a robotic arm used on the International Space Station. The facility is located at the Canadian Space Agency near Montreal, Canada. Credit: Andreas Mogensen/YouTube (screenshot)
Canadian astronaut David Saint-Jacques at the simulator used to train astronauts on Canadarm2, a robotic arm used on the International Space Station. The facility is located at the Canadian Space Agency near Montreal, Canada. Credit: Andreas Mogensen/YouTube (screenshot)

You’re In A Spacesuit, Blind. This Astronaut Survived It And Explains What He Did Next

Chris Hadfield during an EVA in 2001. Credit: NASA

“There is no problem so bad that you can’t make it worse.” So with that old astronaut principle in mind, what is the best reaction to take when your eyes become blinded while you’re working on the International Space Station, in no more protection than with a spacesuit?

The always eloquent Canadian (retired) astronaut Chris Hadfield — commander of Expedition 35 — faced this situation in 2001. He explains the best antidotes to fear: knowledge, practice and understanding. And in this TED talk uploaded this week, he illustrates how to conquer some dangers in space with the simple analogy of walking into a spiderweb.

Say you’re terrified of spiders, worried that one is going to poison you and kill you. The first best thing to do is look at the statistics, Hadfield said. In British Columbia (where the talk was held), there is only one poisonous spider among hundreds. In space, the odds are grimmer: a 1 in 9 chance of catastrophic failure in the first five shuttle flights, and something like 1 in 38 when Hadfield took his first shuttle flight in 1995 to visit the space shuttle Mir.

So how do you deal with the odds? For spiders, control the fear, walk through spiderwebs as long as you see there’s nothing poisonous lurking. For space? “We don’t practice things going right, but we practice things going wrong, all the time so you are always walking through those spiderwebs,” Hadfield said.

And then he tells the tale of his 2001 spacewalk during STS-100 when he was outside, blinded by a substance in his helmet, trying to work through the problem. (The incident has even more resonance today, just a few months after an Italian astronaut had a life-threatening water leak in his NASA spacesuit.)

Be sure to watch the talk to the end, as Hadfield has a treat for the audience. And as always, listening to Hadfield’s descriptions of space is a joy: “A self propelled art gallery of fantastic changing beauty that is the world itself,” is among the more memorable phrases of the talk.

TED, a non-profit that bills itself as one that spreads ideas, charged a hefty delegate fee for attendees at this meeting (reported at $7,500 each) but did free livestreaming at several venues in the Vancouver area. It also makes its talks available on the web for free.

Hadfield rocketed to worldwide fame last year after doing extensive social media and several concerts from orbit.

Retired Canadian astronaut Chris Hadfield at a TED talk near Vancouver, British Columbia in 2014. Credit: TED/Sapling Foundation (screenshot)
Retired Canadian astronaut Chris Hadfield at a TED talk near Vancouver, British Columbia in 2014. Credit: TED/Sapling Foundation (screenshot)

US Air Force Space Surveillance Satellite Bumps NASA’s long awaited Orion Launch to Dec. 2014

Delta 4 Heavy rocket and super secret US spy satellite roar off Pad 37 on June 29, 2012 from Cape Canaveral, Florida. NASA’s Orion EFT-1 capsule will blastoff atop a similar Delta 4 Heavy Booster in December 2014. Credit: Ken Kremer- kenkremer.com

Delta 4 Heavy rocket and super secret US spy satellite roar off Pad 37 on June 29, 2012 from Cape Canaveral, Florida. NASA’s Orion EFT-1 capsule will blastoff atop a similar Delta 4 Heavy Booster in December 2014. Credit: Ken Kremer- kenkremer.com
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CAPE CANAVERAL AIR FORCE STATION, FL – The urgent need by the US Air Force to launch a pair of previously classified Space Situational Awareness satellites into Earth orbit this year on an accelerated schedule has bumped the inaugural blastoff of NASA’s highly anticipated Orion pathfinder manned capsule from September to December 2014.

It’s a simple case of US national security taking a higher priority over the launch of NASA’s long awaited unmanned Orion test flight on the Exploration Flight Test-1 (EFT-1) mission.

The EFT-1 flight is NASA’s first concrete step towards sending human crews on Beyond Earth Orbit (BEO) missions since the finale of the Apollo moon landing era in December 1972.

Final assembly of Orion is underway at the Kennedy Space Center (KSC).

The very existence of the covert Geosynchronous Space Situational Awareness Program, or GSSAP, was only recently declassified during a speech by General William Shelton, commander of the US Air Force Space Command.

Shelton made the announcement regarding the top secret GSSAP program during a Feb. 21 speech about the importance of space and cyberspace at the Air Force Association Air Warfare Symposium and Technology exposition, in Orlando, FL.

US national security requirements forced NASA’s Orion EFT-1 mission to swap launch slots with the GSSAP satellites – which were originally slated to launch later in 2014.

An artist concept shows Orion as it will appear in space for the Exploration Flight Test-1 attached to a Delta IV rockets Centaur second stage.   Credit: NASA
An artist concept shows Orion as it will appear in space for the Exploration Flight Test-1 attached to a Delta IV second stage. Credit: NASA

Since both spacecraft will blast off from the same pad at Complex 37 and atop Delta rockets manufactured by United Launch Alliance (ULA), a decision on priorities had to be made – and the military won out.

At a Cape Canaveral media briefing with Delta first stage boosters on Monday, March 17, Universe Today confirmed the order and payloads on the upcoming Delta IV rockets this year.

“The firing sequence for the Delta’s is the USAF Global Positioning System GPS 2F-6 [in May], GSSAP [in September] and Orion EFT-1 [in December], Tony Taliancich, ULA Director of East Coast Launch Operations, told me.

Universe Today also confirmed with the top management at KSC that NASA will absolutely not delay any Orion processing and assembly activities.

NASA Administrator Charles Bolden discusses NASA’s human spaceflight initiatives backdropped by the service module for the Orion crew capsule being assembled at the Kennedy Space Center.  Credit: Ken Kremer/kenkremer.com
NASA Administrator Charles Bolden discusses NASA’s human spaceflight initiatives backdropped by the service module for the Orion crew capsule being assembled at the Kennedy Space Center. Credit: Ken Kremer/kenkremer.com
Despite the EFT-1 postponement, technicians for prime contractor Lockheed Martin are pressing forward and continue to work around the clock at the Kennedy Space Center (KSC) so that NASA’s Orion spacecraft can still meet the original launch window that opens in mid- September 2014 – in case of future adjustments to the launch schedule sequence.

“Our plan is to have the Orion spacecraft ready because we want to get EFT-1 out so we can start getting the hardware in for Exploration Mission-1 (EM-1) and start processing for that vehicle that will launch on the Space Launch System (SLS) rocket in 2017,” Bob Cabana, director of NASA’s Kennedy Space Center and former shuttle commander, told me.

Shelton stated that two of the GSSAP military surveillance satellites would be launched on the same launch vehicle later this year.

“GSSAP will present a significant improvement in space object surveillance, not only for better collision avoidance, but also for detecting threats,” Shelton said.

“GSSAP will bolster our ability to discern when adversaries attempt to avoid detection and to discover capabilities they may have, which might be harmful to our critical assets at these higher altitudes.”

According to a new GSSAP online fact sheet, the program will be a space-based capability operating in near-geosynchronous orbit, supporting U.S. Strategic Command space surveillance operations as a dedicated Space Surveillance Network sensor.

“Some of our most precious satellites fly in that orbit – one cheap shot against the AEHF [Advanced Extremely High Frequency] constellation would be devastating,” added Shelton. “Similarly, with our Space Based Infrared System, SBIRS, one cheap shot creates a hole in our environment. GSSAP will bolster our ability to discern when adversaries attempt to avoid detection and to discover capabilities they may have which might be harmful to our critical assets at these higher altitudes.”

GSSAP will allow more accurate tracking and characterization of man-made orbiting objects, uniquely contribute to timely and accurate orbital predictions, enhance knowledge of the geosynchronous orbit environment, and further enable space flight safety to include satellite collision avoidance.

The GSSAP satellites were covertly developed by Orbital Sciences and the Air Force.

Two additional follow on GSSAP satellites are slated for launch in 2016.

“We must be prepared as a nation to succeed in increasingly complex and contested space and cyber environments, especially in these domains where traditional deterrence theory probably doesn’t apply,” Shelton explained. “We can’t afford to wait … for that catalyzing event that will prod us to action.”

Bob Cabana, director of Kennedy Space Center, discusses Orion EFT-1 with the media at Cape Canaveral Air Force Station, FL, on March 17. Credit: Ken Kremer - kenkremer.com
Bob Cabana, director of Kennedy Space Center, discusses Orion EFT-1 with the media at Cape Canaveral Air Force Station, FL, on March 17. Credit: Ken Kremer – kenkremer.com

Orion is NASA’s first spaceship designed to carry human crews on long duration flights to deep space destinations beyond low Earth orbit, such as asteroids, the Moon, Mars and beyond.

The inaugural flight of Orion on the unmanned Exploration Flight Test – 1 (EFT-1) mission had been on schedule to blast off from the Florida Space Coast in mid September 2014 atop a Delta 4 Heavy booster, Scott Wilson, NASA’s Orion Manager of Production Operations at KSC, told Universe Today during a recent interview at KSC.

The two-orbit, four- hour EFT-1 flight will lift the Orion spacecraft and its attached second stage to an orbital altitude of 3,600 miles, about 15 times higher than the International Space Station (ISS) – and farther than any human spacecraft has journeyed in 40 years.

Stay tuned here for Ken’s continuing Orion, Chang’e-3, Orbital Sciences, SpaceX, commercial space, LADEE, Mars rover, MAVEN, MOM and more planetary and human spaceflight news.

Learn more at Ken’s upcoming presentations at the NEAF astro/space convention, NY on April 12/13 and at Washington Crossing State Park, NJ on April 6. Also evenings at the Quality Inn Kennedy Space Center, Titusville, FL, March 24/25 and March 29/30

Ken Kremer

Twin NASA Probes Find “Zebra Stripes” in Earth’s Radiation Belt

Illustration of the twin Van Allen Probes (formerly Radiation Belt Storm Probes) in orbit (JHUAPL/NASA)

Earth’s inner radiation belt displays a curiously zebra-esque striped pattern, according to the latest findings from NASA’s twin Van Allen Probes. What’s more, the cause of the striping seems to be the rotation of the Earth itself — something that was previously thought to be impossible.

“…it is truly humbling, as a theoretician, to see how quickly new data can change our understanding of physical properties.”

– Aleksandr Ukhorskiy, Johns Hopkins University Applied Physics Laboratory

Our planet is surrounded by two large doughnut-shaped regions of radiation called the Van Allen belts, after astrophysicist James Van Allen who discovered their presence in 1958. (Van Allen died at the age of 91 in 2006.) The inner Van Allen belt, extending from about 800 to 13,000 km (500 to 8,000 miles) above the Earth, contains high-energy electrons and protons and poses a risk to both spacecraft and humans, should either happen to spend any substantial amount of time inside it.

Read more: Surprising Third Radiation Belt Found Around Earth

The Radiation Belt Storm Probes Ion Composition Experiment (RBSPICE) is a time-of-flight versus energy spectrometer (JHUAPL)
The Radiation Belt Storm Probes Ion Composition Experiment (RBSPICE) is a time-of-flight versus energy spectrometer (JHUAPL)

Launched aboard an Atlas V rocket from Cape Canaveral AFS on the morning of Aug. 30, 2012, the Van Allen Probes (originally the Radiation Belt Storm Probes) are on a two-year mission to investigate the belts and find out how they behave and evolve over time.

One of the instruments aboard the twin probes, the Radiation Belt Storm Probes Ion Composition Experiment (RBSPICE), has detected a persistent striped pattern in the particles within the inner belt. While it was once thought that any structures within the belts were the result of solar activity, thanks to RBSPICE it’s now been determined that Earth’s rotation and tilted magnetic axis are the cause.

“It is because of the unprecedented high energy and temporal resolution of our energetic particle experiment, RBSPICE, that we now understand that the inner belt electrons are, in fact, always organized in zebra patterns,” said Aleksandr Ukhorskiy of the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Md., co-investigator on RBSPICE and lead author of the paper. “Furthermore, our modeling clearly identifies Earth’s rotation as the mechanism creating these patterns. It is truly humbling, as a theoretician, to see how quickly new data can change our understanding of physical properties.”

The model of the formation of the striped patterns is likened to the pulling of taffy.

RBSPICE data of stripes within the inner Van Allen belt (Click for animation) Credit: A. Ukhorskiy/JHUAPL
RBSPICE data of stripes within the inner Van Allen belt (Click for animation) Credit: A. Ukhorskiy/JHUAPL

“If the inner belt electron populations are viewed as a viscous fluid,” Ukhorskiy said, “these global oscillations slowly stretch and fold that fluid, much like taffy is stretched and folded in a candy store machine.”

“This finding tells us something new and important about how the universe operates,” said Barry Mauk, a project scientist at APL and co-author of the paper. “The new results reveal a new large-scale physical mechanism that can be important for planetary radiation belts throughout the solar system. An instrument similar to RBSPICE is now on its way to Jupiter on NASA’s Juno mission, and we will be looking for the existence of zebra stripe-like patterns in Jupiter’s radiation belts.”

Jupiter’s Van Allen belts are similar to Earth’s except much larger; Jupiter’s magnetic field is ten times stronger than Earth’s and the radiation in its belts is a million times more powerful (source). Juno will arrive at Jupiter in July 2016 and spend about a year in orbit, investigating its atmosphere, interior, and magnetosphere.

Thanks to the Van Allen Probes. Juno now has one more feature to look for in Jupiter’s radiation belts.

“It is amazing how Earth’s space environment, including the radiation belts, continue to surprise us even after we have studied them for over 50 years. Our understanding of the complex structures of the belts, and the processes behind the belts’ behaviors, continues to grow, all of which contribute to the eventual goal of providing accurate space weather modeling.”

– Louis Lanzerotti, physics professor at the New Jersey Institute of Technology and principal investigator for RBSPICE

The team’s findings have been published in the March 20 issue of the journal Nature.

The Van Allen Probes are the second mission in NASA’s Living With a Star program, managed by NASA’s Goddard Space Flight Center in Greenbelt, MD. The program explores aspects of the connected sun-Earth system that directly affect life and society.

Source: Van Allen Probes news release

New Gully Appears On Mars, But It’s Likely Not Due To Water

At right, a new gully appears in pictures of the same region of Terra Sirenum on Mars. The picture at left was taken in November 2010, and the right in May 2013. Credit: NASA/JPL-Caltech/Univ. of Arizona

Check out the groove! In the blink of a geological lifetime, a new gully has appeared on the planet Mars. These images from NASA’s Mars Reconnaissance Orbiter show a new channel in the southern hemisphere region of Terra Siernum that appeared between November 2010 and May 2013.

While there’s a lot of chatter about water on Mars, this particular feature is likely not due to that liquid, the agency added.

“Gully or ravine landforms are common on Mars, particularly in the southern highlands. This pair of images shows that material flowing down from an alcove at the head of a gully broke out of an older route and eroded a new channel,” NASA stated.

It’s unclear in what season the activity occurred because the observations took place more than a Martian year apart, NASA added. These ravines tend to happen in the southern highlands and other mid-latitude regions on Mars.

“Before-and-after HiRISE pairs of similar activity at other sites demonstrate that this type of activity generally occurs in winter, at temperatures so cold that carbon dioxide, rather than water, is likely to play the key role,” the agency said.

Last week, the agency also announced that MRO recovered from an unplanned computer swap that put the spacecraft into safe mode. Incidents of this nature have happened four times before, the agency noted.

Source: NASA