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Bad Astronomy
« Carnival of Space 10001110
Growing a mustache so others can read »

Happy anniversary, Terra!

No, not Terra the Earth, Terra the satellite. NASA’s Earth-observing bird first opened its eyes on February 24, 2000, and for the past decade has been dutifully watching our planet. It has looked upon us at different wavelengths, different resolutions, at different times of day, and different times of year. It has tracked changes, and reported back what it has seen.

And oh, what it has seen! Here is a map made almost entirely of Terra data (small gaps in some coverage were filled with data from GOES weather satellites):

terra_10th_first_light

Click to get the massive 85Mb 5400×2700 pixel image. It’s totally worth it. Our planet is very, very pretty.

But Terra is more than just a camera. The data it returns track a lot of key environmental factors for our world. Here are representations of some of the data it takes: growing vegetation, carbon monoxide, aerosols (pollution), elevation, and net radiation (energy in from the Sun and energy radiated away as heat).

terra_globes

Again, click through to see how lovely data can be, or at least how it can be represented.

These maps, these observations, help us understand our own world, how it works, and how we’re changing it. These are all matters related to our very survival, and I’m very glad we have tools like Terra helping us ensure that.


Image credits: Marit Jentoft-Nilsen (image) and Robert Simmon (globes)

Share

February 25th, 2010 7:09 AM Tags: Earth, Terra
by Phil Plait in NASA, Pretty pictures, Science | 31 comments | RSS feed | Trackback >

31 Responses to “Happy anniversary, Terra!”

  1. 1.   IVAN3MAN@LARGE Says:
    February 25th, 2010 at 7:54 am

    Is it just me or is anyone else not getting “the massive 85Mb 5400×2700 pixel image” after attempting to download it? I’ve tried Firefox 3.6 and IE8, and neither of them work.

  2. 2.   Phil Plait Says:
    February 25th, 2010 at 7:56 am

    It may just take a while to download. Try doing a “Save As”.

  3. 3.   Holytape Says:
    February 25th, 2010 at 7:57 am

    I always felt like I was being watch…….. and they told me that I was paranoid and delusional. Now I know that not only are the watching me, they are measuring the amount of carbon I produce, my elevation and my net radiation. Tricky little devils aren’t they. This is all a part of the plot by Major League Baseball.
    On a side note, how long is that satellite supposed work?
    Heaven

  4. 4.   Daniel Says:
    February 25th, 2010 at 8:04 am

    Nice earth visualizations. i like them.

  5. 5.   WJM Says:
    February 25th, 2010 at 8:11 am

    Thanks for the clarification, because, as we should all know by know, Terra (the planet’s) birthday isn’t until October 23rd. :)

  6. 6.   Plutonium being from Pluto Says:
    February 25th, 2010 at 8:14 am

    To the eponymous tune :

    Happy birthday to you
    Happy birthday to you
    Happy birthday dear T – E-R-R-R-A!
    Cripes that’s the wrong acro-nymn! ;-)

    @ 1. IVAN3MAN@LARGE Says:

    Is it just me or is anyone else not getting “the massive 85Mb 5400×2700 pixel image” after attempting to download it? I’ve tried Firefox 3.6 and IE8, and neither of them work.

    Not just you. I’m not getting it and taking forever to load here too. :-(

    Are we getting a bit too ambitious with file sizes now are we BA? ;-)

    (I’ll forgive you – I get carried away with things myself on occassion. Nor am I good with always getting computers to work either. )

    One small nitpick :

    Terra the satellite. NASA’s Earth-observing bird first opened its eyes on February 24, 2000,

    Hang on, isn’t today the twenty-fifth? ;-)

  7. 7.   rob Says:
    February 25th, 2010 at 8:20 am

    you know, i have had a sneaky feeling that i have been watched for the past decade. better add more foil to my hat.

  8. 8.   jtradke Says:
    February 25th, 2010 at 8:37 am

    Man, 85 megs seems like a lot for 5400×2700. They could probably crank up the compression without losing any visible detail.

  9. 9.   gss_000 Says:
    February 25th, 2010 at 8:44 am

    Bittersweet that this is happening the same day that news is coming out ICESat is over after 6 years of service (it was only supposed to last 3).

  10. 10.   coryy Says:
    February 25th, 2010 at 8:57 am

    The second set of images makes me think of the last scene in “Until the End of the World” , with the female protagonist spinning weightlessly in the space station, keeping tabs on the pollution levels of the earth….

  11. 11.   CJSF Says:
    February 25th, 2010 at 9:00 am

    It always impresses me how much cloud cover Earth usually has. I also notice that most of it is over water in the image presented here.

    CJSF

  12. 12.   Conheça o Terra! O satélite da NASA que faz fotos incríveis | PostMania Says:
    February 25th, 2010 at 9:17 am

    [...] imagens belíssimas do nosso planeta, algumas dessas fotos são em alta definição como essa nesse post do Bad Astronomy que nada menos de 85Mb! E mostra todo o planeta [...]

  13. 13.   Jim Says:
    February 25th, 2010 at 9:36 am

    Why spend all this money when we have Glen Beck to sit in front of a camera and be able to say global warming must not exist? seems scientists are not using their brains :)

  14. 14.   IVAN3MAN AT LARGE Says:
    February 25th, 2010 at 10:00 am

    Phil Plait:

    It may just take a while to download. Try doing a “Save As”.

    Well, I tried that (I always do so for massive TIFF images!), but it still does not work; Adobe Photoshop Album states: File failed to load.

    Ah, sod it!

  15. 15.   Ken Says:
    February 25th, 2010 at 10:40 am

    I worked on building the Level-Zero Processing system (EDOS) that supports Terra, Aqua, Aura and ICEsat; thanks for pointing out Terra’s 10th birthday.

  16. 16.   Sharku Says:
    February 25th, 2010 at 11:05 am

    The Gimp can’t open it either and complains that it’s a 16 bit / channel PSD file.

  17. 17.   jtradke Says:
    February 25th, 2010 at 11:06 am

    I can’t get the pic to open with anything either.

    Edit: Except for the QuickTime PictureViewer, but that can’t export it or resize it or anything.

  18. 18.   Johan Stuyts Says:
    February 25th, 2010 at 11:27 am

    I had problems viewing the file too and what the Gimp of Sharku said is correct: it is a PSD file instead of a JPEG. So change the extension from ‘jpg’ to ‘psd’ and enjoy (if you have a viewer that is capable of showing Photoshop files that is).

  19. 19.   Danno Says:
    February 25th, 2010 at 11:58 am

    Image comes up in XnView, but I receive a message stating, “The picture will be converted to RGB with 8bits per component”

    Reading the embedded metadata , looks like the file is a IDL TIFF file created in Photoshop and having the original name of “new_modis_clouds.psd”

    Perhaps someone performed a rename and did not export to jpg properly.

  20. 20.   Christine Says:
    February 25th, 2010 at 12:11 pm

    I can’t open the file either. Rats.

  21. 21.   John Moore Says:
    February 25th, 2010 at 1:44 pm

    Try right clicking and chose “save target as” and it will d/l just fine…

  22. 22.   D Says:
    February 25th, 2010 at 1:46 pm

    I had trouble with the image too (GIMP user). So, I used #19 Danno’s program and converted it to a JPG. Here is the 1600×800 (1161Kb) file on ImageShack: .

  23. 23.   D Says:
    February 25th, 2010 at 1:50 pm

    Okay I made a mistake. So, I will put the ImageShack address as Website info (click my name to go to the image?).

  24. 24.   IVAN3MAN AT LARGE Says:
    February 25th, 2010 at 1:52 pm

    Danno:

    Perhaps someone [at NASA] performed a rename and did not export to jpg properly.

    Probably the same person who got the metric/imperial units of the Mars Climate Orbiter mixed up!

    P.S. John Moore, the problem is not downloading the file; the problem is opening the bloody file!

  25. 25.   Philip Kahn Says:
    February 25th, 2010 at 2:44 pm

    Renaming the file to FILE_NAME.psd then opening it in Photoshop works.

  26. 26.   QuietDesperation Says:
    February 26th, 2010 at 12:46 am

    I thought you were going to with the Earth a happy birthday.

    A happy 6045th birthday.

    (QD runs and hides)

  27. 27.   John Says:
    February 26th, 2010 at 3:05 am

    “Renaming the file to FILE_NAME.psd then opening it in Photoshop works.”

    Yes that worked for me. I had to change the windows folder options to show the extension so I could edit it.

    I good old days of DOS you could do that much easier in one command.

  28. 28.   Mike Says:
    February 26th, 2010 at 3:26 am

    Like many a people here have already observed the file is incorrectly named as .jpg and thus many a simple program fail to open it. My recent version of GIMP opened it just fine and after I saved it as JPEG it opens up anywhere. I guess some people don’t understand that the last three letters after the dot at the end of a filename are not supposed to be there just for decoration… ( although they really are ).

    Perhaps someone with the right contacts could point this out to the NASA dudes as well?

  29. 29.   t-storm Says:
    February 26th, 2010 at 4:27 am

    question.
    you say at different times of day. it looks to me like the orbit is a sun synchronus orbit which means that over any given spot on the earth the sun is in the same position. that sounds like the same time of day to me, at least relatively.
    any thoughts?

  30. 30.   jtradke Says:
    February 26th, 2010 at 7:37 am

    Yes! Thank you @Danno #19. The XnView app was able to open the file and convert to the actual JPEG format. I knew 83 megs was too large for a JPEG of those dimensions.

  31. 31.   R Simmon Says:
    March 2nd, 2010 at 2:13 pm

    Oops: I inadvertently uploaded the wrong version of the large image. It’s now a much more modest 6 MB JPEG. BTW: if you discover problems on the NASA Earth Observatory, hit the “contact us” link at the bottom of each page.

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