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Bad Astronomy

Archive for 2012

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SpaceX Dragon on its way to the ISS!

At 07:44 UTC, May 22, 2012, a SpaceX Falcon 9 rocket thundered into space, carrying the Dragon capsule into orbit.

So first, holy wow, and yay! That’s fantastic news! This was the second attempt, after a glitchy valve caused a launch abort a few days ago.

This morning’s launch went very smoothly. After achieving orbit, the uncrewed Dragon craft decoupled from the rocket and successfully deployed its solar panels, a key milestone in the mission. When that happened, the cheering from the SpaceX team could be heard in the webcast background, which was delightful. A lot of people on Twitter commented on how NASA’s narration of the event was very stoic and calm, but the SpaceX webcast was very emotional and involved*. I think both of those are as they should be!

Here’s a short video of the launch:

The entire SpaceX webcast is also online. The key moments are the launch at 44:30 into the video, main engine cutoff and start of the second stage at 47:30, the rocket achieving orbit and Dragon capsule separation at 54:00, and then the solar arrays deploying at 56:20.

Seriously, watch that video at the 56:20 mark. When the arrays deploy, you can hear a huge cheer from the SpaceX employees watching. That was awesome. The SpaceX announcer at deployment made me smile. You can really hear the wonder and excitement in her voice.

So why was this launch important? SpaceX is the first entirely private company to attempt to dock a capsule with the International Space Station. If this mission is a success, it’s a big step toward private companies being able to do resupply missions to ISS, including bringing astronauts to and from orbit (which SpaceX plans to be able to do by 2015). And perhaps most importantly, in the long run it means lowering the cost of putting materials in orbit, and that is absolutely critical in creating a permanent human presence in space.

This launch today is just the start of the mission. On Friday, May 25, the Dragon will undergo a series of maneuvers near and around ISS to show that it can be controlled well enough to dock. If that shakes out, then it will approach the station and an astronaut on board ISS will grab it with the robotic arm, bringing it in to mate. There are supplies on the capsule, including a dozen or so student science experiments to be performed. Finally, after over a week in space, it will undock and return to Earth, splashing down in the Pacific ocean off the coast of California.

We’ve all been waiting a long, long time for this, so my honest and hearty congratulations to the crew at SpaceX and at NASA!

We live in the future, folks.

Image credit: SpaceX


* I also couldn’t help but notice they use the metric system! Hey NASA, ahem.


Related Posts:

- SpaceX launch aborted; next attempt Tuesday
- Space X set to launch on Saturday May 19
- Will ATK beat everyone into space?
- Breaking: Private company does indeed plan to mine asteroids… and I think they can do it

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May 22nd, 2012 11:19 AM Tags: Dragon capsule, ISS, SpaceX
by Phil Plait in Cool stuff, NASA, Pretty pictures, Space, Top Post | 43 Comments » | RSS feed | Trackback >

A fake and a real view of the solar eclipse… FROM SPACE!

[First: CONGRATS to SpaceX for the successful launch of the Falcon 9 and deployment of the Dragon capsule! Everything looked great and things are apparently going smoothly. You can watch the whole thing here, and I'll have more about all this in a little while. Until then, back to your regularly scheduled blog post.]

Over the past couple of days, a lot of people are passing this image around, saying it’s from the eclipse Sunday, taken by an astronaut from the International Space Station:

Here’s the thing: it’s not. It’s actually a lovely piece of artwork done in 2009 by a Japanese artist who goes by the name A4size-ska on DeviantArt.

There are plenty of clues to show it’s not real, if you know where to look. For one, the real eclipse was annular, meaning a lot of the Sun was still seen around the silhouetted Moon. That’s not apparent here. Plus, the bright Earth (and Sun!) would wash out the background stars in a picture like this, so you’d not see them, and certainly not the Milky Way (the fuzzy band under the eclipse in the artwork).

The picture is certainly realistic otherwise! The artist notes he used images from the European Southern Observatory; the Earth and Milky Way are both clearly real shots.

If you’re curious about what the view really looked like from the ISS, then here you go:

Isn’t that awesome? In an earlier post I put that up an image from that video as well as a pile of other eclipse shots (including two more from space). Universe Today has a bunch more, too.

(more…)

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May 22nd, 2012 7:00 AM Tags: eclipse, fake, jet
by Phil Plait in Astronomy, Debunking, Pretty pictures, Skepticism | 27 Comments » | RSS feed | Trackback >

Gallery: When the Moon ate (most of) the Sun

For several hours on May 20, 2012, <a href="http://blogs.discovermagazine.com/badastronomy/2012/05/21/the-may-20-2012-annular-solar-eclipse-in-motion/" target="_blank">the Moon partially blocked the light of the Sun</a>. Because the Moon was farther from Earth than it usually is, <a href="http://blogs.discovermagazine.com/badastronomy/2012/05/19/followup-supereclipse/" target="_blank">it couldn't completely blot out the Sun</a>, creating what's called an <em>annular eclipse</em>.<br /><br />For those fortunate enough to be on a narrow path cutting across the planet, they saw the Moon centered in the Sun's disk, surrounded by a "Ring of Fire" - <a href="http://blogs.discovermagazine.com/badastronomy/2012/05/17/ring-of-fire-eclipse-on-may-20/" target="_blank">an annulus of light</a> around the silhouetted Moon. The rest of us saw a partial eclipse... or nothing at all. But thousands of pictures were taken, and many people graciously sent them to me so I can display them here. <br /><br />All pictures are used by permission of the photographer, and link to the original, usually bigger version.<br /><br /><br />The view of the eclipse from Alberta, Canada by <a href="https://plus.google.com/109125543725694477961/posts/QAqP6koYy6D" target="_blank">Mark Langridge</a>, who had a Celestron 8" telescope aimed at it. Using a Canon EOS 60Da camera and a solar filter, this magnified shot shows the edge of the Moon cutting across the bright Sun, itself peppered with sunspots. Don't be fooled by the scale though: those spots are each as big or bigger than the whole Earth!<br /><br /><em><a href="http://twitpic.com/9nizep" target="_blank">Original picture<br /><br /><br /></a></em>Astronomer and science writer <a href="http://lightsinthedark.wordpress.com/" target="_blank">Jason Major</a> - who participated in <a href="http://blogs.discovermagazine.com/badastronomy/2012/05/21/the-may-20-2012-annular-solar-eclipse-in-motion/" target="_blank">my live webcast</a> of the eclipse - took enough time to run outside and capture the Sun setting while the eclipse was still ongoing. The hazy Dallas, Texas skies tinted the whole scene orange.<br /><br /><em><a href="https://twitter.com/#!/JPMajor/status/204383391024558080/photo/1/large" target="_blank">Original picture</a> <br /><br /> </em>This stunning image was taken by the geostationary satellite <a href="http://www.jma.go.jp/jma/jma-eng/satellite/" target="_blank">MTSAT</a> right around midnight UTC May 20/21. You can see the shadow of the Moon on the northwest Pacific ocean, with Japan and Asia to the left, and Australia thousands of kilometers farther south. <em>Credit: <span style="font-family: 'trebuchet ms'; font-size: 13px; line-height: 16px; text-align: left;">PHL @ UPR Arecibo, NASA, EUMETSAT, NERC Satellite Receiving Station, University of Dundee. Tip o' the eclipse glasses to <a href="http://www.universetoday.com/95298/the-may-2012-annular-eclipse-as-seen-from-space/" target="_blank">Universe Today</a>.<br /><br /><a href="http://nanobio.hpcf.upr.edu/~amendez/phl/VDE_Eclipse.jpg" target="_blank">Original Picture</a> (and <strong>YES</strong> you want to click that!) <br /><br /> </span></em>Hands-down one of my favorite pictures from this event, <a href="https://plus.google.com/102126309480646857716/posts" target="_blank">Alok Singhal</a> took this in Berkeley, California by holding up a pair of binoculars and letting them project two images of the Sun on a wall. By artfully stepping into the right spot, the twin Suns became eyes looking back at him as he looked at them!<br /><br /><em><a href="https://lh3.googleusercontent.com/-nKu0jShi0vU/T7mb6aICMhI/AAAAAAAAD_E/T8MlyWT4TwE/s662/12+-+1">Original picture</a> <br /><br /> </em><a href="http://twitter.com/mikekalush" target="_blank">Mike Kalush</a> took this dramatic shot of the eclipsed Sun setting over the Rocky Mountains from Denver, Colorado. <br /><br /><em><a href="https://twitter.com/#!/mikekalush/status/204400604355887105/photo/1/large" target="_blank">Original picture</a></em> <br /><br /><br />My friend <a href="http://www.twitter.com/annewheaton" target="_blank">Anne Wheaton</a> was at Lake Tahoe on the California/Nevada border, and asked me how to observe the eclipse. She needn't have bothered; the trees did it for her! Overlapping leaves provided thousands of natural <a href="http://en.wikipedia.org/wiki/Pinhole_camera" target="_blank">pinhole cameras</a>, each focusing an image of the Sun on the ground. Many, many people saw this effect, including John Knoll <a href="http://blogs.discovermagazine.com/badastronomy/2012/05/21/the-may-20-2012-annular-solar-eclipse-in-motion/" target="_blank">who took an amazing video of it</a> as the leaves blew in the wind! <br /><br /><em><a href="https://twitter.com/#!/AnneWheaton/status/204406067726262275/photo/1/large" target="_blank">Original picture</a> <br /><br /> </em><div>You don't need fancy equipment to see an eclipse. My friend  <a href="http://www.twitter.com/annewheaton" target="_blank">Anne Wheaton</a> told me how she took this picture: "I stabbed a pen tip through my valet ticket and looked at it on my friend's sweatshirt. Crafty!" When light rays from the Sun pass through a small hole, all the rays coming out are parallel, so they're in focus. The smaller the hole, the better. That's how a <a href="http://en.wikipedia.org/wiki/Pinhole_camera" target="_blank">pinhole camera</a> works, and is one of the safest - and most fun - ways to look at the Sun.<br /><br /><em><a href="https://twitter.com/#!/AnneWheaton/status/204382851662221314/photo/1/large" target="_blank">Original picture</a></em> <br /><br /></div>What does a solar eclipse look like from the orbiting International Space Station? Here you go! Astronaut Don Petit took this astonishing picture at 23:36 during mid-eclipse. I have to think they had the best seat <span style="text-decoration: line-through;">on</span> off the planet! <em>Credit: NASA<br /><br /><a href="https://plus.google.com/u/0/106819891249477893372/posts/EwX1qXDNh9r" target="_blank">Original picture</a> <br /><br /> </em>From San Jose, California, <a href="https://twitter.com/#!/stoneymonster/status/204439104732139520" target="_blank">Chris White</a> took this sequence of shots that he put together into a montage. From that location, nearly 90% of the Sun's face was blocked by the Moon. The order runs from left to right, top to bottom. Sunspots are clearly visible, and look at how the color of the Sun gets more orange as it gets closer to setting. In the last two pictures you can see it passing behind power lines and trees. Lovely! <br /><br /><em><a href="http://www.flickr.com/photos/stoneymonster/7239382688/sizes/h/in/photostream/" target="_blank">Original picture</a> <br /><br /> </em>Small telescopes are great for projecting the image of the Sun onto a wall or ceiling, which is what Twitter user <a href="http://www.twitter.com/ingrum" target="_blank">ingrum</a> did... but also got a bonus! The bright sunlight coming in through the window created a lens flare, a reflection inside his camera. Much dimmer than the direct sunlight itself, you can see a perfect little eclipsed Sun in the reflection!<br /><br /><em><a href="https://twitter.com/#!/ingrum/status/204441231395270657/photo/1/large" target="_blank">Original picture</a> <br /><br /> </em>While we were doing the live webcast of the eclipse, <a href="http://www.twitter.com.leeskelton" target="_blank">Lee Skelton</a> sent us two phenomenal pictures taken from his hotel room while he was staying in Tokyo - Japan had an excellent view of the complete annular eclipse. This first picture was during the maximum part of the eclipse, and even through the clouds you can see the "Ring of Fire"; the incompletely-blocked surface of the Sun by the Moon.<br /><br /><em><a href="https://twitter.com/#!/leeskelton/status/204366665578840064/photo/1/large" target="_blank">Original picture</a> <br /><br /> </em>The second picture Lee Skelton sent us during the webcast was taken just minutes later, as the Moon started to move off the Sun. Just as the edge of the Moon hit the edge of the Sun, they formed a cosmic crescent in the sky, marking the beginning of the end of this event.<br /><br /><em><a href="https://twitter.com/#!/leeskelton/status/204352808353415169/photo/1/large" target="_blank">Original picture</a> <br /><br /> </em><div>The European Space Agency microsatellite <a href="http://www.esa.int/esaMI/Proba/SEMJJ5ZVNUF_0.html" target="_blank">Proba-2</a> took this great shot from space! Designed to look in the far-ultraviolet part of the spectrum, it sees magnetic activity on the Sun like sunspots, towering loops of ionized gas, and streamers reaching outward from the Sun's surface. Because Proba-2 orbits the Earth in less than 2 hours, it actually saw multiple eclipses, one for each time it passed into the Moon's shadow! This is a still image from just one. <a href="http://www.esa.int/esaCP/SEMHJTYWD2H_index_1.html#subhead2" target="_blank">ESA put a video online</a> showing them all, and it's amazing. <em>Credit: ESA/ROB</em><br /><br /><em><a href="http://www.flickr.com/photos/europeanspaceagency/7240932650/in/photostream/" target="_blank">Original picture</a></em> <br /><br /></div>Twitter user <a href="https://twitter.com/#!/ghsdkgb" target="_blank">Matt Hewes</a> got this lovely overexposed shot of the Sun, revealing the eclipse in an internal reflection - a "lens flare" - in his camera.<br /><br /><a href="https://twitter.com/#!/ghsdkgb/status/204447916864180225/photo/1/large" target="_blank">Original picture </a>If you don't know <a href="http://www.mikephirman.com/" target="_blank">Mike Phirm</a>, you should. Half of the comedy music duo Hard and Phirm (with Nerdist lord <a href="http://www.nerdist.com" target="_blank">Chris Hardwick</a>), he does the amazing song <a href="http://www.youtube.com/watch?v=8N7-wRWg7FU" target="_blank">Chicken Monkey Duck</a>. Just go watch it.<br /><br />He has a quirky sense of humor, and took advantage of the eclipse by punching a couple of holes in a card and making this shadow puppet. Clearly, they both enjoyed the event.<a href="https://twitter.com/#!/phirm/status/204411463534780417/photo/1" target="_blank"><br /><br /><em>Original picture<br /><br /><br /><br /></em></a>From Little Rock, Arkansas,<a href="https://twitter.com/#!/stncld" target="_blank"> Stephen Caldwell</a> took this lovely picture of the setting Sun over the western hills. From that far east in the US, the eclipse had barely begun before the Earth's rotation swept it away, so I'm glad Stephen had the time to get this. <br /><br /><em><a href="https://twitter.com/#!/stncld/status/204404017412050944/photo/1/large" target="_blank">Original picture<br /><br /><br /><br /></a></em>Here's another shot of the solar eclipse look like from space, this time by NASA's Earth-observing satellite Terra snapped this shot while the shadow of the Moon fell over the northwest Pacific ocean (very close to the same time as the MTSAT shot in this gallery). Clouds swirl to the east, which probably would have blocked the view for anyone underneath as the eclipse shadow sped northeastward to pass by first the Aleutian Islands off Alaska, and then southeast to to the United States. <em>Credit: NASA/Terra</em> <br /><br /><em><a href="http://lance-modis.eosdis.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl1_143.A2012141232500-2012141233000.2km.jpg" target="_blank">Original picture<br /><br /><br /></a></em>Meteorologist Wayne Blankenship caught the eclipsed Sun moments before it disappeared behind the hills in America's southwest. He took an amazing series of Ring of Fire shots, too, <a href="https://twitter.com/#!/WayneDBJr/media/slideshow?url=http%3A%2F%2Fyfrog.com%2Foex9avej" target="_blank">which he posted on Twitter</a>.<br /><br /><a href="http://yfrog.com/z/od854vnj" target="_blank"><em>Original picture</em><br /><br /></a><br />
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May 21st, 2012 9:15 AM Tags: annular eclipse, eclipse, gallery, Moon, solar eclipse, Sun
by Phil Plait in Astronomy, Cool stuff, Pretty pictures, Top Post | 35 Comments » | RSS feed | Trackback >

The May 20, 2012 annular solar eclipse in motion

So yesterday was the annular eclipse of the Sun, and I held a live impromptu video chat on Google+ about it. I was joined by Pamela Gay, Fraser Cain, Nicole Gugliucci, and Jason Major, and we had a live video feed using astronomer Scott Lewis’s telescope. It was way too much fun! I’ve embedded the video at the bottom of this post.

We asked for pictures, and my Twitter feed overfloweth with them! I’m collecting them to put into a gallery which I’ll have up soon, but until then, watch this incredible video taken by John Knoll in his front yard in northern California:

Isn’t that amazing? What happened is that all the overlapping leaves made thousands of tiny holes that sunlight could poke through. This acts like a lens, focusing images of the Sun through every hole — it’s how a pinhole camera works. [UPDATE: Timothy in the comments below points out that some people were confused by my wording. I can see why; I had started to explain how a pinhole camera works then decided it was too distracting and instead just linked to Wikipedia. I didn't mean the pinhole is a lens, just that you get a sharp picture if you use one. I should've chosen my words more carefully.] You can read about the details of this on Wikipedia. Here’s a similar video, too.

I’ll have the gallery up soon, so stay tuned!

Finally for now, here’s the live webcast recording. I’ll embed it here, but note it took me a long time to get it set up and running. It really gets started at 17:23, and I suggest you skim around to see the cool stuff.


Related Posts:

- Ring of fire eclipse on May 20
- Followup: Supereclipse
- Eclipse followup part 2: tons o’ links on how to safely watch

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May 21st, 2012 6:30 AM Tags: eclipse, John Knoll, pinhole camera
by Phil Plait in Astronomy, Pretty pictures | 11 Comments » | RSS feed | Trackback >

LIVE Q&BA Hangout for the eclipse

[UPDATE: The hangout's over. Thanks to all who watched! I'll have the YouTube video up as soon as I can!]

I know this is last minute, but I decided to do a live Hangout on Google+ to talk about the solar eclipse. I’ve embedded the video below if you want to watch. If you want to ask questions, go to the link above or send me something on Twitter. If you leave a comment here I won’t see it!

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May 20th, 2012 4:39 PM Tags: eclipse, G+, Hangout, Q&BA
by Phil Plait in Astronomy | 19 Comments » | RSS feed | Trackback >

Eclipse followup part 2: tons o’ links on how to safely watch

Today’s the eclipse! I’m excited, though our weather here in Boulder has been fairly touch-and-go the past few weeks. I’m hoping for clear skies so I can see it; I got my eclipse glasses in the mail yesterday, so I’m all set. Locally, CU Boulder is holding a viewing in the football stadium! That’s a pretty nifty idea. As a reminder, the eclipse begins at 20:56 UTC (13:56 Pacific US time) on May 20, and ends at 02:49 UTC May 21 (19:49 on May 20 Pacific time).

I have links in an earlier post on where and when to watch (and yesterday I posted about why the "Supermoon" two weeks ago guarantees today’s eclipse being annular).

Observing the Sun during an eclipse can be tricky, since it’s very bright and can damage your eyes. Wikipedia has an excellent article about this. Something I want to make special note of: during the deepest eclipse, when the Sun is blocked the most, is ironically the most dangerous time to look at it with your unaided eye. Your pupil dilates (opens wide), letting in more light, but the parts of the Sun not blocked by the Moon are still just as intense. That makes it easier to damage your eye, so be very careful.

Of course, you shouldn’t look at the Sun with binoculars or through a telescope! That’ll destroy your eyes — literally — so seriously, it’s not recommended. The only exception is if you have the proper equipment designed specifically to view the Sun. Sky and Telescope’s site has a great rundown of how to observe the eclipse safely, including what equipment you can use.

For more on safe observations, check out Mr. Eclipse’s page, where he has a thorough list of how-tos. The websites io9 and for Astronomy Magazine have some good info, too.

Want an optometrist’s opinion? Here you go. Or you can try some of the tricks listed at The Exploratorium.

If you want to photograph the eclipse, again Mr. Eclipse has great stuff, and this You Tube video demonstrates making a Sun filter for your camera out of a Pop Tart bag! That’s not for your eyes; it’s just for taking pictures (and while some websites say it’s OK for cameras, your mileage may vary — and DO NOT USE THIS for binoculars or telescopes because it does not block enough light to be effective).

The picture here is of the Sun from just this morning, taken by NASA’s Solar Dynamics Observatory. It’s just to give you a reference of what the unblocked Sun looks like. There are some good-sized sunspots today, so they’ll provide a pretty contract and a nice background to the eclipse. To get a current picture, go to the SDO site and you’ll see it there (click the drop-down menu under the picture and select "HMI Intensitygram" to get the visible light view).

You can watch the eclipse online, too. Sky and Telescope has some info on that, and as I understand it NASA will have some live feeds on their Sun-Earth Connection site. The Japanese space mission Hinode will be watching the eclipse, too.

Finally, if you want a number of people to be able to see this event at the same time, the best way is to project the image of the Sun onto a wall or screen. Here’s a video with a very simple and clever method that I may try myself tomorrow. All you need is foil and a makeup (or other flat) mirror:

Cool! It’s essentially a pinhole camera with a bigger hole but a longer focal length, so you achieve the same results.

I hope everyone has clear skies and good, safe viewing of this wonderful event!

Image credit: NASA/SDO

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May 20th, 2012 10:45 AM Tags: eclipse, solar eclipse
by Phil Plait in Astronomy, Cool stuff, Pretty pictures | 10 Comments » | RSS feed | Trackback >

Skeptics’ Guide to the Universe (of asteroid mining and Mayans)

As a change of pace, I was the guest rogue on this week’s episode of The Skeptics’ Guide to the Universe. We covered a lot of ground, from Futurama heads to asteroid mining to Mayans… and I have an abysmal record at the Science or Fiction segment when I’m on the show, so you can hold your breath in anticipation to see if I finally get one right, or once again go down in flames. I’ll note, obviously, that I always get it right when I listen to the show at home.

And nothing says love like Rebecca promising she’d freeze my head. Such a romantic.

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May 20th, 2012 7:00 AM Tags: asteroid mining, Mayans, Rebecca Watson, Skeptic's Guide to the Universe
by Phil Plait in Cool stuff, Debunking, Science, Skepticism | 5 Comments » | RSS feed | Trackback >

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