China’s Chang’e 5-T1 is the latest in a series of robotic missions to eventually return a lunar sample to Earth. Its mission is to “simply” travel to the Moon and return to Earth. Just a little run around the neighborhood. But as it was coming around the far side of the Moon, it snapped this image that should make us all stop and marvel:
You’ve got to click to see the full-sized image. It’s a perspective that’s unlike anything I’ve ever seen before. Yes, similar views were captured during the Apollo program, but nothing quite like this. Our Moon’s far side is so very different from its near side that it almost looks like an alien world. Most of the maria regions are on the near side, and thanks to tidal forces, we can never see the far side of the Moon from Earth. And yet, it’s our Moon. And there we are, on that small blue/white sphere in the distance.
I first spotted this image on the Planetary Society’s blog and it’s cool to see it getting passed around. I think images like these are crucial to our survival. Hopefully, as we continue to “grow up” as a species, we’ll better understand how finite our planet really is, how alone in the dark we really are. And how lucky we are to be alive to see it like this.
Until tonight, little news was released following last night’s destruction of the Orb-3 launch from the Mid-Atlantic Regional Spaceport at Wallops Island, VA. I can’t say that I was surprised, as they must have spent the entire day assessing damage, collecting debris, and just starting to make sense of what happened before they released a statement.
Sure enough, tonight NASA and Orbital Sciences Corp (the company who built and launched the Antares launch vehicle and Cygnus cargo spacecraft) have both issued statements. But first, here’s what the launch pad looked like today:
Wow. The first thing I notice is the charred blast which appears to have been largely directed toward the beach. That makes sense since the rocket was heading upward and slightly eastward at the time of the explosion. But take a look at that launch tower – it’s knocked to about a 45 degree angle. And two of the four lightning rod towers are completely gone. Still, to my untrained eye, most of the structure appears to be intact. But let’s hear it from Orbital themselves (emphasis mine):
The overall findings indicate the major elements of the launch complex infrastructure, such as the pad and fuel tanks, avoided serious damage, although some repairs will be necessary. However, until the facility is inspected in greater detail in the coming days, the full extent of necessary repairs or how long they will take to accomplish will not be known.
That’s encouraging news. Pad 0A is the only pad certified to launch Antares so the sooner it can be repaired, the sooner the Mid Atlantic Regional Spaceport s can get back to supporting the International Space Station. Still, it’s far too early to tell the full extent of the damage. Still, the initial image released by NASA does seem to back up the statement:
Mind you, this is still very early in the investigation. It’s going to be months before there’s another rocket launch out of Wallops, to the space station or anywhere else. But we’ll take the encouraging news as we get it.
I was on top of the roof of Smith Hall at Towson University with four of my physics students. We were looking toward the southeast, toward NASA’s Wallops Flight Facility in Virginia, hoping to catch a glimpse of the Antares Rocket on its flight to the International Space Station. Although I had NASA TV playing on my iPhone, our eyes were trained on the horizon. In my experience I’ve found that NASA TV is anywhere from 30 to 60 seconds delayed. So we started scrutinizing the horizon as soon as the clock read 6:22 pm. By my guess, we should see the rocket emerge from the horizon even as we were listening to the final countdown play out on the phone.
But no rocket appeared.
I then heard something that sounded like a crackling sound coming from my iPhone. I looked down at the screen and saw this:
I’ll spare what I said next, but suffice to say it was not the sort of thing a professor would normally say in front of his students.
Realizing there wasn’t going to be a rocket rising over the horizon, we went downstairs to the classroom. I put NASA TV on as the students filed in for the class that was to begin at 7pm. I had given my students the “homework” assignment of trying to spot the rocket’s flight over the horizon; a timely assignment as we had discussed the physics of rockets and space flight last week.
I started class by filling them in on what had happened. I explained what little we knew and what we didn’t yet know. Needles to say, there were a lot of questions: Was there anyone on-board?Was anyone near the launch pad?Will they be able to launch from there again?Will the astronauts aboard the International Space Station have enough food?
Thankfully, I could answer the most important question — nobody was on-board the spacecraft, nor was anyone anywhere near the launch pad. In fact, NASA was reporting that all personnel were safe and accounted for. Thank goodness.
The students got to see a perspective of spaceflight that they probably hadn’t considered before — this stuff is difficult, challenging, and dangerous. Rockets have to unleash a tremendous amount of fuel as fast and with as much energy as possible. Only then can the spacecraft accelerate forward in reaction to the controlled explosion raging underneath it.
It’s a lot harder than it looks.
After I got home, I watched the news conference and shared some reactions on Twitter and Facebook. A lot of people are upset tonight and understandably so. Many man-years of hard work and effort were lost tonight, including the spacecraft, the rocket, and most of an entire launch complex.
But now the investigation is underway. It’s tempting to speculate what might have been the cause, but I’ll refrain from doing so here. There is a lot of data that will need to be examined, including telemetry, video, and even the scrap paper used by the launch team. And then there’s the physical debris that will need to be collected and scrutinized.
NASA and Orbital Sciences Corp. have their work cut out for them. But I’m also confident that they will find out what the problem is, correct it, and get back to flying again. In the meantime, I hope that my students and the public can use this as an opportunity to learn an important lesson:
One really amazing feature in the video occurs at about 0:32 seconds where the Milky Way is seen rising above a foreground of orange clouds. Those “clouds” are actually sand from a sandstorm that hit the Sahara desert a couple of days earlier. The whole scene looks like it was taken from another planet and is just jaw-dropping.
As I watch the video, I cannot help but consider that as crowded as the sky is with stars, each of those stars are light-years away from one another; each as alone in the void as we are. And yet seen like this, they appear stacked on top of one another, creating the illusion of a crowded galaxy.
The Moon is our nearest celestial neighbor, but it’s tempting to think it’s much closer to Earth than it really is. The Moon has an average distance from Earth of 384,399 kilometers (or 238,854 miles if you prefer). We know that’s far, but how far is that really? It turns out it’s far enough to fit every other planet in the solar system with room to spare. Check it out:
I spotted this image on Twitter and thought it was a perfect illustration of the actual distance between the Earth and the Moon. But even then I needed a double-check so I went to Wikipedia, found the equatorial diameter of each of the planets and added them up. Sure enough, they came out to less than the average Earth-Moon distance:
Moon Semi-Major Axis (km)
As you can see, the average distance (or semi-major axis) between the Earth and Moon can accommodate all of the planets with room to spare! But perhaps the most dramatic example of the actual distance to the Moon is to simply just show it to scale:
Space is big. It’s really, really big. So big that it’s hard to not end this post with a quote from Douglas Adams:
Space is big. Really big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it’s a long way down the road to the chemist’s, but that’s just peanuts to space.
Orbital Sciences Corp are getting ready to launch another Antares rocket carrying a Cygnus resupply ship to the International Space Station. The spacecraft is on-board the rocket, the rocket is on the pad and, as of this writing, is 98% GO for Monday night’s launch out of NASA’s Wallops Flight Facility. Launch is scheduled for 6:45pm EDT.
An even better resource is to get What’s Up at Wallops mobile app which will point you in the direction towards the launch pad at Wallops. The app is available for Android and Apple iOS.
While you’re at it, be sure to get the free NASA TV apps for Android and Apple iOS as well. Use these apps to monitor the countdown while you’re heading outside to look. Bear in mind that the streaming to your phone is usually delayed by up to a full minute so don’t count on it for true “real-time” information.
Make sure you can get a clear line of sight to the southeastern horizon. Since this is night launch, you should be able to spot a rapidly moving “star” emerging from the southeast and heading further toward the east. You should be able to see the first stage’s exhaust plume and maybe even see the first stage separation and second stage ignition. To give you a rough idea of the shape of the arc as seen from Maryland, here is a Google Earth mockup of the launch from Baltimore:
And for my Physics students, here is a simulation from Towson University:
And finally, here’s one for my friends & family in the Philly/Springfield PA area:
And here’s a map that shows the approximate amount of time that will pass after liftoff and when you should be able to start seeing the rocket:
Magnificent, isn’t it? With a vast wasteland before her, a young apprentice forms planets out of the rock and delivers water to them via comets. The result is a spectacular allegory of how water was delivered to Earth billions of years ago (albeit without the need for a creator to do so).
And all of this is taking place as the Rosetta spacecraft prepares to land a probe on Comet 67P/Churyumov-Gerasimenko on November 12th.
The actual campaign idea is very well targeted. But, shooting myself in the foot a bit, I’m very surprised you need something like this at all now. Mankind sends a probe into space to catch a comet and land on it, and we need a great director, film, and actors to convince people this is interesting.
Alas, that seems to be true. Nevertheless, the film is as amazing as the Rosetta mission is ambitious.
Our Sun is a wonderful, active, and occasionally downright spooky star if you look at it right. As luck would have it, the Sun presented a decidedly Jack-o-Lantern face to the Solar Dynamics Observatory on October 8 2014.
Suffice to say, we could never see the Sun like this with our own eyes. Instead, the Jack-o-Lantern image was created by combining two sets of ultraviolet images that would normally be colored gold and yellow. But since it’s so close to Halloween, the SDO team went with black and orange and the result is hallow-eerie-awesome! You can view the individual images that made up the Jack-o-Lantern composite at NASA’s Goddard Spaceflight Center website.
Even though our Sun has been relatively weak compared to recent decades, it still puts on tremendous displays of magnetic activity. Its magnetic field lines get twisted and form regions of magnetic activity on the surface of the Sun. We see these active regions as sunspots in the visible part of the spectrum, but in ultraviolet we can see the plasma suspended in these magnetic field lines. The result is spectacular:
Last week I received an invite to Ello, the fancy new social network everyone is talking about but few are using (though that is rapidly changing as of this writing). It’s very new, but in my opinion not that fancy, at least not just yet.
Ello’s mission goals are to create a social network that is permanently free of advertising, guarantees the privacy of its users, and promises never to sell your personal info or anything you post to third parties. Others have tried this before and failed. But who knows, perhaps enough of the public have reached a tipping point with Facebook’s “All your data are belong to us” model. Time will tell.
I’ve tried other social networks before, but I find myself coming back to Ello from time to time and seeing what’s going on in there. I’ve already linked up with several longtime friends and even some Launch Pad and NASA Social friends as well so it very much has that “private party” sort of vibe to it.
Oh, and I’m on there as @christianready so feel free to link up if you’re on Ello.
This summer, I backed a Kickstarter campaign to help get Starstuff Clothing off the ground. My funding level entitled me to two shirts which I received a couple of weeks ago. After wearing them a bit, I thought I’d offer a review. But first, here they are, modeled by yours truly:
Believe it or not, I am not a professional model. I know, right? Anyway, as you can see, the shirts are complete wraparound space images! Starstuff calls these Galaxy shirts, but they are really Hubble Space Telescope images of the Orion Nebula and the Tarantula Nebula, both of which are star forming regions in the Milky Way and Large Magellanic Cloud.
What really sets these shirts apart is that the images are dyed into the fabric using a process called sublimation printing. As Starstuff explains on their site:
Essentially, a gigantic sheet of ink-covered paper is laid across a blank shirt. The ink is pressed and heated, literally vaporizing the ink … which then immediately binds to the fibers of the shirt. You can’t feel the ink printed on top of the shirt, because it’s not — it’s DYED into each individual thread. This creates an incredibly natural, smooth feel to the shirt — and it’s literally impossible for the image to crack or flake off over time like regular screenprinted shirts do. The colors will always stay vibrant and amazing as long as you live.
I was a bit skeptical at first, having bought many a t-shirt that looks cool but turns out to be rather uncomfortable to wear. However, these shirts are very comfy and wear very easily. I haven’t noticed any wrinkling, binding, or fading since I’ve had them. W00T!!!
But this technique does have one drawback: the ink cannot make its way into every fiber and thread of the shirt, particularly in the seams and armpits. The result are white “image artifacts” in the shirts – that is, spots where the ink didn’t reach. Starstuff is very up front about this, and they explain this phenomenon on their website. My shirts were no exception to this problem.
In my view, this is hardly a show-stopper. I’ve found that the white seams really don’t distract from the beauty of the shirt. But I’d like to point this out just in case anyone decides to pick one up and wonders what’s going on there.
And I hope you will pick one up, because any business that promotes an appreciation of the cosmos is a business very well worth supporting. Besides, you’ll look damn good doing it. I love my shirts and look forward to ordering more as their product offering expands. If you’re like me, you probably wear your love for astronomy on your sleeve. Now you wear it on the rest of the shirt, too!