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Astronomy Picture of the Day's |
Q1: What does APOD stand for?
A1: APOD stands for the Astronomy Picture of the Day. We abbreviate this
as APOD instead of ApotD because APOD sounds better
(spoken: AYE-pod).
Q2: How can I easily see yesterday's APOD?
A2: Click the < less than sign < at the left of
today's APOD link line (near the bottom of the daily page).
Q3: How can I see an APOD that ran long ago?
A3: All APODs are archived. To see any past APOD, access the archive
page. This is found by clicking "archive" on the link line, or even by
clicking "Discover the Cosmos" near the top of recent APOD pages.
Q4: Have some APOD pictures been run more than once?
A4: Yes. Many of our readers have been with us less than a year and are
unaware of some really spectacular or important astronomy pictures. New
information about old pictures is becoming available over the WWW. The
text and links for rerun pictures will make use of this newly
available information. So although the picture might be old, some of
the text and links of each APOD will be new. Also, more web surfers
have larger bandwidth connections, which allows us to post
higher-resolution image files that can be transferred conveniently.
Software to handle more sophisticated image file formats has also
become more common, so the picture's size
and/or format might be new. Lastly, rerunning APODs saves us time and
helps us update our archive. In general, our rerun policy currently is
to only rerun APODs more than one year old to keep the pictures
relatively "new" to new APOD viewers. We will almost
never rerun more than two pictures in any given week.
So when you load the current
APOD,it is still, most probably, a new picture.
Q5: I have a picture that would make a good APOD. Will you use it?
A5: We can't promise to use it but we do strongly encourage picture
submissions to APOD. Even if you only know of a good picture, please
tell us about it. If you own the copyright for a submitted picture,
please grant us explicit permission to use it. The best way to show us
your picture is to load it onto a web page and send us the URL.
Please note that by submitting your image to APOD, you are consenting for your image to be used on APOD in all of its forms, including mirror sites, foreign language mirror sites, and direct APOD derivative products.
Note for image submissions: The APOD pages are collected annually on a CD-ROM, which is distributed free of charge to educators and the general public. If you would like your image to be considered for an APOD but do not want your image included in this CD-ROM collection, please let us know.
Q6: Can I use an APOD picture for my computer-screen background?
A6: For personal, non-commercial, non-public fair use, yes.
Q7: How can I get a nice poster of a particular APOD?
A7: APOD does not sell posters. Some pictures originating from NASA
can be purchased in poster form following the information on this approved NASA page.
Q7a: How can I see a higher-resolution version of a particular APOD? A7a: Clicking on the picture itself brings up the highest resolution version of the image available from APOD. It is possible that higher resolution versions exist. To find these you should follow the informative links in the APOD text.
Q8: Can I use APOD pictures in my classroom?
A8: For non-commercial fair use, yes. Please note that many APOD
images have are copyrighted and so to use them commercially you must
gain explicit permission from the copyright owners. Many times, these
copyright owners can be found by following the links provided under the
APOD image(s).
Q9: Can I use your APOD images for my brochure?
A9: Many APOD images are copyrighted and so to use them you must write
to the copyright owners for explicit permission. Many times, these
copyright owners can be found by following the links provided under the
APOD image(s).
Q10: Can you please answer this question about astronomy?
A10: We do get a lot of e-mail and can't promise to respond due to time
constraints. However, the APOD bulletin board
Starship Asterisk
is filled with knowledgeable and enthusiastic people who would actually
enjoy answering all of your astronomy questions. In particlar,
Starship Asterisk's
Library is designed for newcomers.
Please ask -- there is no question too easy or too hard.
Alternatively, there are other web sites that are
devoted to providing answers to space and astronomy questions.
Two of these that keep an impressive archive of questions and answers are:
Ask the Space
Scientist and
Ask an Astrophysicist.
Please note that if you ask your question and it is answered
publicly, others can gain from your curiosity.
Q11: Is APOD available as a book?
A11: Selections from APOD's daily pages have been compiled into
two books titled "Universe: 365 Days" (May 1, 2003) and "Astronomy:
365 Days" (October 1, 2006) - Publisher: Harry N Abrams.
Q12: Is APOD available as a CD?
A12: For the years 2000-2010, yes! These CDs are created by the
kind folks at the Astrophysics Science Division
at NASA's Goddard Space Flight Center. The free CDs can be ordered by
sending mail to this address, but the mailings may take some time.
Barbara Mattson Imagine The Universe Mail Code 662 NASA/Goddard Space Flight Center Greenbelt, MD 20770 USA
Q13: What if I used to be a millionaire but then I believed something
I read on APOD and now own only a single dented bucket?
A13: There are no guarantees. Use APOD information at your own risk.
Q14: How long will APOD keep going?
A14: If the "Tomorrow" line at the bottom of today's APOD is not blank,
then at least until tomorrow. (Probably.) We certainly have no plans
to stop soon. If you check the apod archive you can see that it begins
in June 1995.
Q15: Won't APOD soon run out of pictures?
A15: Probably not. NASA has archived literally hundreds of thousands of
space and astronomy related pictures and APOD readers have come to
submit many images for our consideration.
So far, we have more good pictures than we can run.
Q16: Who writes the APOD text?
A16: Robert J. Nemiroff and Jerry T. Bonnell have written most
every APOD. Bob and Jerry are friends, professional astronomers, and
were once office-mates at NASA's Goddard Space Flight Center in
Greenbelt, MD. Presently, Bob is a professor at Michigan
Technological University in Houghton, Michigan, USA, while Jerry is a
scientist at NASA/Goddard. They are two mild and lazy guys
who might otherwise appear normal to an unsuspecting guest. Together,
they have found new and unusual ways of annoying people such as
staging astronomical debates. Most people are surprised to learn that they
have developed the perfect
random
number generator.
Q17: If you guys weren't so modest, what would you tell us about APOD?
A17: Since we are so modest we keep quiet about a lot of things. For
example, it just wouldn't be proper to let slip that we feel that APOD
is one of the first sites (since 1995) to make journalistic use of full
web hypertext. By "full web hypertext", we mean that the APOD text is
liberally annotated with hyperlinks to anywhere on the web where good
and relevant information is available. We don't claim to be good at
writing full web hypertext (we're too modest), just relatively early
users of this informative type of writing.
Robert J. Nemiroff and Jerry T. Bonnell for Astronomy Picture of the Day