Blogs / Bad Astronomy

I sometimes make fun of NASA for being a bit stodgy, but in truth a lot of the folks there are pretty savvy when it comes to new tech and social media. The Mars rovers Spirit and Opportunity were on Facebook pretty quickly, and a flood of other space probes followed suit. Twitter is well-populated by NASA people, including astronaut Soichi Noguchi, who has been tweeting tirelessly from orbit recently, posting one amazing picture after another of cities, landscapes, and even the Moon.

One thing NASA is careful about is archiving material. They are well aware of the importance of the work they’re doing, and public outreach is a critical aspect of it. That’s why I’m happy to see a new effort on the part of the space agency to archive all their social media outlets.

It’s just started, so it’s a bit sparse, but I can see this being very useful to future historians. It may seem silly to have an online record of all the official tweets from NASA people, but in fact there is a wealth of information there. And it’s not just Twitter; it’s also Flickr for pictures, and YouTube for videos. I can see this expanding to Facebook, too, and other social networks. There’s a brief intro to the archive on the NASA images blog as well.

NASA does a pretty decent job of being transparent to its stakeholders — that’s you, folks — far better than most other government agencies, despite being online in far larger proportion than them as well. And I know that I’ll be able to use this archive for blogging; it’ll make linking to NASA efforts a whole lot easier. Not only that, but I found a couple of new Twitter streams form NASA I’m interested in, too! So take a look at the archive and dig around. I just bet you’ll find something cool there.

My friend Eran Segev, an Aussie skeptic and all-around good guy, submitted a podcast to 365 Days of Astronomy dealing with the venerable Parkes radio dish and its support of the Apollo 11 Moon landing. It’s a good story — it was fictionalized in the very cute movie "The Dish" — and he interviews a couple of the men who were there during the whole thing. And if you listen to the whole thing, they mention a familiar name, too…

A few weeks ago, International Space Station astronaut Soichi Noguchi took an amazing picture of Endeavour re-entering Earth’s atmosphere.

He has been busily snapping away at the Earth and posting the pictures on his Twitter feed. You really should be following him!

Recently, he unknowingly did me a big favor by posting this incredible shot of Egypt:

Yes, those are actual pyramids in the picture! Amazing. And by doing that, he made it very easy for me to answer the question I still get about once a month from people: "Is the Great Wall of China the only man-made object you can see from space?".

I already knew the answer is no; you can see cities easily, as well as agricultural formations, big roads, and more. But this one shot makes it very plain and simple: yes, humans have made quite an impact on the planet, and you can easily see it from space.

Hot on the heels of the post the other day about the winds on Mars blowing the sand dunes and visibly moving them across the planet’s surface comes this new satellite image of a huge sandstorm raging across the planet:

Of course, I’d forgive you if you interpret my saying "the planet" as meaning Mars. However, this picture is of Earth! Specifically, the Middle East. This March 4^th image from the Terra satellite shows a plume of sand 100 km (60 miles!) across sweeping from Saudi Arabia over Kuwait and into Iran.

In some ways, Mars and Earth are very similar. Sometimes, it’s even hard to tell them apart…

Last year, I attended the NASA-sponsored Launch Pad Workshop, a week-long camp in Laramie, Wyoming, to help science fiction authors learn astronomy. That way, they can get ideas and write more accurate stories! It was a lot of fun, and I had a fantastic time.

Registration is open again for Launch Pad 2010, with guest speaker Kevin Grazier, who is a planetary scientist and science advisor for TV shows, including Battlestar Galactica.

Launch Pad will be from July 11 – 18, 2010, and if you’re a science fiction author you can apply to attend from now until March 31. And if you are an author, I urge you to go. It’s more than just getting the science right; it’s about inspiration, and there’s plenty to be had in astronomy. Launch Pad is a great way to meet it head on.

The James Webb Space Telescope is NASA’s successor to Hubble. Mind you, it’s not a replacement: JWST will see in the infrared, peering deeper into the Universe with its ginormous 6 meter unfoldable mirror than Hubble can.

But that infrared part is important. Objects that are warm give off IR light, and if you don’t cool your telescope, it’ll glow in the wavelengths you’re trying to see. It would be like having a flashlight shining down your ’scope!

So JWST has to be cooled, and since it’ll be in a spot in space where the Sun shines 24/7 (the so-called L2 point, where the Sun’s and Earth’s gravity balances), it basically needs a sunshade. And also since the ’scope is pretty big, the shade itself has to be sizable.

What engineers came up with is a multi-layered blanket of material that will sit "underneath" the telescope, blocking the sunlight and passively cooling the whole thing. The shade will be pretty big, about the size of a tennis court! To make sure it works, they created 1/3 scale model of the actual shade. This diminutive has been built, and is now undergoing tests at Goddard Space Flight Center.

[Click to deployenate]

Cool! Um. Literally.

You can also keep up with the construction of JWST using a webcam mounted in the clean room. I remember that room well; though I never got in I used to watch them work on Hubble cameras there.

Also, to give you an idea of just how big JWST will be… In 2007, I was at an astronomy meeting where a frakkin’ full-scale JWST model made an appearance. Here’s a video I made about it:

I did my best with this video considering the day before I was dying from a norovirus. Man, I love Seattle, but that was a rough week.

Anyway, JWST is still planning a 2014 launch. If you like Hubble images, JWST will blow you away. Just the galaxy shots it will produce will be spectacular beyond compare. And the deep field images will go much farther than Hubble can, if you can imagine that! JWST is a revolution in astronomy waiting to happen, every bit as much as Hubble was. Let’s hope these tests go well, and we can get that bird flying.

Three iPhone apps recently came out that pertain to some favorite topics on this blog, so here’s a quick roundup of them.

1) John Cook, like me, got tired of hearing the same old long-debunked claims from global warming deniers being used over and over again, so he created an app debunking these claims. Called Skeptical Science, it divides the claims into three categories: It’s not happening, It’s not us, and It’s not bad. Under each heading are quite a few claims I’ve seen made repeatedly by the deniers, and Cook includes detailed rebuttals.

Overall I like this app, and it’s bound to be handy if you find yourself in a situation where someone is using these same claims (it’s the Sun, the hockey stick graph is flawed, Al Gore is boring, and so on). I might quibble with some of the details — for example, it talks about 1934 being the warmest year on record, but doesn’t mention that 1998, the second warmest, trails behind by a statistically insignificant 0.02 degrees. There’s more like that, but this is such a small detail it really comes down to a matter of style; an "I woulda done it different" kind of thing. The content is good and links are provided for further info.

I recommend having this one handy, so here’s the direct download link.

2) Next up is a NASA app called 3D Sun. And not to trick you or anything, but it’s an app that displays the Sun in 3D. Put out by the folks behind the STEREO probes, it’s a pretty cool gizmo that reports new sunspots and aurorae, lets you look at movies of solar events like plumes, filaments, and coronal mass ejections, and gives you the latest solar news.

The best thing is the 3D Sun itself. It displays the current solar disk, and you can look at it in different wavelengths (UV shows more violent activity) and from different solar observatories. You can zoom in, out, rotate the view, and pretend you’re on a spaceship roaring past our nearby star.

Now that the Sun is finally starting to show some life again, this app is pretty useful so you know what’s the latest. Here’s the direct download link.

3) The third app is called Lunar Electric Rover, and it’s also put out by NASA. Of the three, I think this is the weakest. It’s essentially a game where you command a lunar rover to traverse the Moon to get to different goals. Now, to be fair, I’m not really partial to these kinds of games, so if they’re your thing, you may love this. I found it to be a bit slow and tedious, and the narration was stilted and difficult to hear over the background sound effects. But again, I’m not a big fan of the "go over here and do this" kinds of games. I’ll note that after I took my own notes on the app, I went to the iTunes listings and the ratings are not all that great; out of 102 ratings, 130 scored it as average or below and 62 above average or great. Lots of folks thought the same things I did.

However, I do think some younger kids will enjoy this. The graphics are quite good, and there is real information displayed and used in the game that provide lots of teachable moments. Here’s the download link.

So, do you agree, disagree? All three apps are free, so I encourage readers to grab ‘em, play with ‘em, and leave your own comments below!