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Please feel free to browse through our favorite entries that we received over the years.

YPOP Guestbook


Greetings to you and your guests. Love what you've done with your site. As an educator I can say you have great communication skills. none.
La Mesa, Ca US - Friday, July 12, 2002 at 06:33 AM (MDT)

good on pictures but does need some updates in text work however it served me the way i wanted thankyou and all the best
diksha sharma
new delhi, new delhi india - Thursday, July 11, 2002 at 02:00 AM (MDT)

I am very interested in astronomy. Your site is very informative. Greetings from Lifetrek
Germany - Monday, July 08, 2002 at 07:58 AM (MDT)

Thanks, I am using your lesson to teach 200 Cub Scouts about the importance of the sun. We will also be making a sundial.
Scott Stewart
Travis Air Force Base, CA USA - Wednesday, June 26, 2002 at 11:36 AM (MDT)

Thanks! This really helped my report!
Salt Lake, Utah U.S. - Tuesday, June 18, 2002 at 12:46 PM (MDT)

Lake District, U.K. - Tuesday, June 11, 2002 at 03:20 AM (MDT)

I think that the sun is very interesting. Even though the sun is only an average size star.
Erika Vandenbush
United States - Thursday, May 30, 2002 at 05:52 PM (MDT)

Great site, superb pictures ! Thanks to the OU for listing this site
Geoff Devall
London, England - Monday, May 27, 2002 at 07:44 AM (MDT)

BROOME, WA WEST AUSTRALIA - Monday, May 20, 2002 at 09:57 PM (MDT)

i never thought i can learn about space so easily.
chennai, tamilnadu india - Monday, May 13, 2002 at 11:57 PM (MDT)

Really enjoyed it - will tell others
london, uk - Saturday, May 11, 2002 at 11:34 AM (MDT)


Thanks. I expect to make use of the information you have provided while teaching the Grade 6 class at Westboro Academy here in Ottawa within a few weeks. I will let you know the results - this ought to be fun.
Doug Carswell
Ottawa, ON Canada - Wednesday, December 05, 2001 at 07:01 AM (MST)

I am a teacher in Colorado Springs. Thank you so much for your incredible interactive website. It is informative, fun, and educational. Thanks. Emily Ciejek 4th grade teacher
Emily Ciejek
Colorado Springs, CO USA - Saturday, November 24, 2001 at 08:28 AM (MST)

really awesome site. I started learning about the sun in astronomy class and at first I thought...sorry about this.. but at first I thought Who cares? It's so beautiful and so powerful and so much to think about. It's awesomely amazing Your site really helps me to grasp some of the difficult aspects. I will never think of the sun in the same way again. Now when I look at it I think about the corona. the solar wind.. the terrific power and even that it's not really a big star at all. It's such fun food for the imagination. Love your site. and the color of the sun is so beautiful. thanks for putting the movies and images on-line.
linda shaw
columbus, ga usa - Thursday, November 15, 2001 at 08:08 PM (MST)

I wanted to teach how to make a sundial to my kids. This site is greately useful. Maybe, you augment it with stuff for making sundials for near-equatorial zones. Murali Mohan, India
Murali Mohan
Hyderabad, Ap India - Friday, October 19, 2001 at 03:52 AM (MDT)

This site was really easy to navigate and the tour was awesome and taught me a lot. i got an A on my science paper and most of my information came from this site. I just wanted to let evryone know that this site was very helpful for me and my friends. Thanx again Monica
East granby, Ct the great old United States - Monday, October 01, 2001 at 08:13 AM (MDT)

Today is the Autumn Eqiunox and wanted to review all the info. Got carried away and downloaded all the good info and also about building a sundial. Great program and will have some fun with it. At 82 its never to late to keep up to date Thanks
Bob Downs
Mountain View , Ca USA - Friday, September 21, 2001 at 10:05 PM (MDT)

Fantasic, My niece and nephew are going to love this. Fab site. Keep it up, it's a credit to you. Smiles Collie
Melbourne, vic Australia - Tuesday, September 18, 2001 at 07:12 PM (MDT)

This is a great website! It inspires me to make a sundial, and maybe even make some for gifts for my friends! Thanks!
Santa Cruz, CA United States - Wednesday, September 05, 2001 at 08:28 PM (MDT)

Stumbled to your site looking for sundial construction instructions & found fantastic solar pictures, a great little sundial construction instructions, detailed information about the sun, etc. I plan to re-visit this site repeatedly. Keep up the good work !!!!
H. Smith
Pensacola, FL USA - Sunday, August 26, 2001 at 01:35 AM (MDT)

The pictures of the sun are very clear and easy to see what is going on. It's wierd to think of the sun as a star like any other star in the universe. I can't believe that we are lucky enough to be the perfect distance away from the sun to sustain all life on Earth. Pretty Amazing!
Chris Braaten
Duluth, MN USA - Tuesday, August 07, 2001 at 04:26 PM (MDT)

Very wonderful, appropriate and clear procedures for sundial construction. I have got some information for my student projects from your elegant website. Please carry on with the good work. Thanks. Simon Anguma Mbarara University of Science and Technology, P.O. Box 1410, Mbarara Uganda. E-mail:
Simon Anguma
Mbarara, Uganda - Thursday, July 19, 2001 at 11:01 AM (MDT)

I enjoyed looking through this site, retrieving information to utilize within my classroom, as well as, great pictures to use with fellow colleagues for professional development. Thanks Dayna Gibbs-Bowser
Dayna Gibbs-Bowser
Philadelphia, PA USA - Wednesday, July 18, 2001 at 09:05 AM (MDT)

JAKARTA, INDONESIA - Tuesday, July 17, 2001 at 06:30 AM (MDT)

Wonderful site. I have taken the liberty to translate the whole tour into Spanish. Please let me know if you are interested in putting on line. I will be more than happy to send it to you. Maria Schwarz Curriculum Integration Through Solar Education Program University of Puerto Rico at Mayaguez
Maria Schwarz
Mayaguez, PR USA - Saturday, July 14, 2001 at 07:52 PM (MDT)

I'm fifth grader and this is how I find this website. First I watched the news and I saw them talking about the sun expanding and it swallowed Mercury and vaporised it. I started to feel like I wanted to know more about the sun. So I went to the internet and go to and ask them where can I find more information about the sun and they answered my questions. I picked one of their answers and that's how I found this website. It seems very intresting but there is only one problem, I just want more videos on it so can you put more videos on this website?
Melissa Utomo
Lafayette, LA U.S.A - Wednesday, July 11, 2001 at 02:15 PM (MDT)

The site is very good and needs some more images to be on show. I was very happy with the images of the sun and i frequently save the images into my folder.
Bangalore, Kar India - Thursday, July 05, 2001 at 02:30 AM (MDT)

I am a 5th grade science and math teacher. I plan to make the sundials this year. That is an excellent idea.
Gail Tyndall
Shreveport, Louisiana USA - Tuesday, June 12, 2001 at 09:48 PM (MDT)

Well done overview!Thanks! Schmeer
Koblenz, Germany - Saturday, June 09, 2001 at 02:42 PM (MDT)

Your site ir wonderful :) It is so nice becuase during science class we get to use the laptops! It is so nice thanks for making it good bye
Blake Housel
Warren, OH USA - Friday, May 25, 2001 at 09:07 AM (MDT)

Thanks for the informative explaination. I used it in my graduate geodynamics class to compare the near surface temperature profile of the sun to a possible temperature profile for the core of the earth. I didn't get my grade yet but I was happy with my free thinking. Thanks again.
Marcia Brisson
Rocky Hill, NJ USA - Monday, May 07, 2001 at 12:42 PM (MDT)

Michael Duer
Tel Aviv, Israel - Wednesday, May 02, 2001 at 01:37 PM (MDT)

I love your site because i'm going to get an A++ on my report
Jacob Ness
Green River, WY United States - Sunday, April 29, 2001 at 08:44 AM (MDT)

We loved the tour of the Sun. It was fun and we learned a lot of things about the Sun that we didn't know before. We expecially liked the part about the 3 layers and the 27-day rotation period.
Mr. Eck's 3rd Grade Gifted Class
Brunswick, GA USA - Thursday, April 12, 2001 at 08:53 AM (MDT)

Nice pages. I learned a lot about the Sun. I would like to know wether the sun needs oxygen to keep burning, although I believe there is no oxygen in outer space. If you know the answer please e-mail me at Thank you
O S S Cargill
Negril, Jamaica - Friday, April 06, 2001 at 07:52 PM (MDT)


Thanks for the great instructions. I am a Media specialist in an elementary school. I love to teach the kids stuff like this and really get them thinking and learning about their world and how it works. Our theme this year is "Celebrate" and we have been doing all kinds of holidays around the world. This will go great as we talk about the 'mystery holiday' of Easter and why it moves instead of staying on the same day each year. Thanks again. Susan
Susan Jeppesen
Fruit Heights, UT USA - Sunday, April 01, 2001 at 08:02 PM (MDT)

melbourne, vic australia - Sunday, April 01, 2001 at 04:10 AM (MDT)

the images that you are so kind to share with the world are truely magnificent! i would like to say thank you for these great views to be shared with the world. although i'm not an astronomer, i am becomming more enlightened about our sun and other ast ronomical happenings everytime i log onto my ISP. i visit this site daily to watch in total amazement of what the sun is doing only hours after it's been imaged. keep up the good work there and we all appreciate your input to further the knowledge bank of our sun. thank you , jim....south dakota, USA
jim thomas
yankton, sd USA - Wednesday, March 28, 2001 at 01:52 PM (MST)

Congratulations on a wonderfully simple,easy to follow and enjoyable lesson. Others please take note.
Alan Egan
Sydney, Australia - Tuesday, March 27, 2001 at 07:19 PM (MST)

this page has been very helpful for our projects. it is also a very interesting page where it provides alot of useful information about our sun. thanks alot and keep up the good work.
PuiTzan Chan < >
Melbourne, vic Australia - Sunday, March 25, 2001 at 04:21 PM (MST)

Nicola Armenise
Bari, Italy - Tuesday, March 20, 2001 at 03:48 AM (MST)

The Public Observatory "Philippus Lansbergen" in Middelburg will give a lot of attention to the SUN-EARTH-DAY on April 27. Therefor we can use all kinds of information about our Sun. All the information we have untill now is about SOHO. Yohkoh is also very important and therefor I enjoyed this site very much. Very educational and very usefull. We expect quite a few people on our Sun-Earth-Day and it's great that there's so much good information available. Thanks for that.
Rijk-Jan Koppejan
Middelburg, The Netherlands - Saturday, March 17, 2001 at 03:33 PM (MST)

I am a Junior Girl Scout leader for ages 10-11. We are currently working on the SKY SEARCH badge and needed instructions to make a sundial while camping. Thanks - everyone had fun while learning!
Sue B.
- Monday, March 12, 2001 at 02:58 PM (MST)

Thanks for your information about building a sundial. I'm working with the PTA at our elementary school to build a science garden and wanted to know more about sundials. Your site is very helpful and clear.
Amy Mackintosh
Raleigh, NC - Sunday, March 11, 2001 at 02:37 PM (MST)

My teacher John Debow at San Juaquin Delta College made this website available to his students in our biology class and I think it is very informative visually and content.
Albert barron
Stockton, CA U.S. - Friday, March 09, 2001 at 01:29 PM (MST)

Wonderful site for my high school earth science students! It has everything I was looking for in a website! The movies are exceptional!!! WELL DONE and THANK YOU!
Rose Emanuel
Deadwood, SD USA - Sunday, March 04, 2001 at 07:00 PM (MST)

I was referred to this site from an Open University course. I have taken the tour explaing the sun and found it to be very easy to read and extremely informative. Thank you.
Tony Harrison
Grantham, UK - Sunday, February 25, 2001 at 03:39 AM (MST)

Great website. I enjoyed the layout and the tour very much. I have bookmarked this one for future use with me and my kids. As a spectroscopist (ICPMS) I enjoy seeing how various instruments are used to study celestial objects. Thanks for sharing.
B. Michael Hovanec
Anaheim, CA USA - Friday, February 23, 2001 at 06:09 PM (MST)

I am very much impressed by the spectacular pictures. It will be helpful if y ou can add explanation to the meaning of the name "yohkoh" in your introduction page.
David Chang
Taipei, Taiwan - Thursday, February 22, 2001 at 11:55 PM (MST)


Thanks for all the help, I'm in grade 4 at Allandale Heights Public School and I chose to do a project on Sundials for my science project. You hade lots of ideas for me. Thanks, again. Liisa
Liisa Steinwedel
Barrie, ON Canada - Tuesday, February 13, 2001 at 06:16 PM (MST)

WOW!!! this is such an awesome website. I could come here everyday and learn something new!!! i can't wait till i get older and become an astronimer!!!
LL Netherlands - Friday, February 09, 2001 at 08:08 AM (MST)

this is great! at the last moment i've found out that i prommised to make a sundial with a group of young teenagers and i didNt know how to do that. This is a great way for a narrow escape! Thanks, also on behalf of the "1e kring van het Apostolisch Genootschap in Brunssum!" (even if they don't know....)
edwin de jong <>
brunssum, the netherlands, Europe - Thursday, January 25, 2001 at 05:29 PM (MST)


Your site is great! I am doing a web page of my own for a class I am in and your site helped me quite a bit.
Jai <>
Millville, MA USA - Thursday, December 21, 2000 at 09:50 AM (MST)

I liked your site alot! I gives very hot facts! Thanks!
Lola <>
Girard, Ohio America - Monday, December 18, 2000 at 02:34 PM (MST)

dilini perera <>
Colombo, WP Sri Lanka - Friday, December 08, 2000 at 04:49 AM (MST)

What great stuff!!!!! This is so impressive, my child uses this to study and do homework, you have inspired us. Thank-you.
Aline Parent <>
QuM-ibec, canada - Friday, November 24, 2000 at 09:24 AM (MST)

Hi, Im studying fisic, that is the reason that makes me spend my time diving at the net looking for more and more information. your page Is realy good, i've found a lot of garbage so thanks. If you have a mailing don't dout including me in it.
Maximo <>
buenos Aires, 54 argentina - Wednesday, November 15, 2000 at 07:41 PM (MST)

Thank you so much for your wonderful site. We will be using it to create a s undial from a large tractor tire at the Children's Garden at Cromwell Valley Park.
Joanne Dintzis <>
Baltimore, MD USA - Saturday, November 04, 2000 at 06:26 AM (MST)

Hello... I am a Freshman at Suffield High School and I went on this site and took to the tour for some extra credit for my Earth Science class. It was very interesting and it helped me understand what we are learing better...Thanks... bye:)
Brittany <>
Suffield, CT United States Of America - Wednesday, October 25, 2000 at 03:24 PM (MDT)

Great! Very straightforward for college students! :)
Carey Czech <>
Albion, MI USA - Wednesday, October 25, 2000 at 02:41 PM (MDT)

Thank you for the information. My son is using it for a science project.
Mark Stumpf < >
Augusta, GA USA - Sunday, October 22, 2000 at 04:55 PM (MDT)

this is a "hot"website in the cool swiss fall.
Niklaus Koehli <niklaus.koehli@bl>
Thun, BE Switzerland - Friday, October 13, 2000 at 01:50 PM (MDT)

Was very interesting, IM-4m going to show it to my children asap, I hope that You will develop other projects soon!!! Rgds from Spain Cris
Cris <>
Palma de Mallorca, IB Spain - Thursday, October 12, 2000 at 08:52 AM (MDT)

My students have loved this! It is awesome! We are very appreciative of the time and energy it must have taken to put this together! Thank you for another great resource for teachers!
Mrs. Word
Evansville, IN USA - Wednesday, October 11, 2000 at 07:45 AM (MDT)

Very good homepage, We are a public solar observatory,Maybe you could send me some books, videos or CD-roms about the sun. My adress GM-|nter Kleinschuster G niebing 250 8330Feldbach Austria Europe
GM-|nter Kleinschuster <>
Feldbach Austria, Europe - Wednesday, October 11, 2000 at 07:16 AM (MDT)

Very interesting and useful. This will be a good teaching material for children who wants to know about Sun.
Ash Parameswaran <mparameswaran@home. com>
Vancouver, Canada - Monday, October 09, 2000 at 07:39 PM (MDT)

I am a government contractor specializing in space weather at the Office of S ecretary of Defense level. What you are doing is commendable, young women need to learn about the many opportunities in science. Thank you
Alexandria, VA USA - Wednesday, August 23, 2000 at 06:50 AM (MDT)

Hello! I want to write because I like very much the astronomy field. This pictures of the Sun (but and the other planets) are very beautifule. I have never seen it before, and for this reason I really appreciate your contri bution in this field. I am looking every day this pictures because every day has something new, especi ally the movie pictures that show rality of our life. Best Regards Agim Pumo
Agim Pumo <>
Tirana, Albania - Saturday, July 08, 2000 at 03:25 AM (MDT)

Great sight. I can't wait to show the children in my classroom!
Angie Girtman <angiegirtman@hotmail .com>
Hazlehurst, GA United States - Monday, June 19, 2000 at 11:23 AM (MDT)

Excellent educational resource. I plan on sharing this information with the Science teachers on my middle school staff.
David W. Ross <>
Tucson, AZ United States - Friday, June 09, 2000 at 09:52 AM (MDT)

Just right. Simple, educational, interesting, not too busy.
MSG Curtis D. Hutcherson <hautahbuhgee@>
Chonan, So. Korea - Friday, June 09, 2000 at 12:50 AM (MDT)

Clear detailed routes to take. Easy to get to the point information
Morkel Combrink <morkel_combr>
Centurion, Gauteng South-Africa - Sunday, June 04, 2000 at 10:04 AM (MDT)

Looking at our Sun is not looking at God. But what when the sun explodes ? I already feel some pity for the further generation in some billions of years ... Where will we be at that time ? Your beautiful site makes me feel our weakness, and the extraordinary beauty of Nature, even if it is totally indifferent to us and our neighbours on other planets. The main purpose of your site is to make us think.. Thank you so much for your work !!
PARIS, FRANCE - Thursday, May 18, 2000 at 12:44 AM (MDT)

Great, Great Web Site! I'm teaching elementary school kids about the Sun (and learning even more). I really appreciate the movies, especially sun-diver!!! What space probe took the sun-diver movie? Thank you, thank you! Sincerely, Tom Kimball
Tom Kimball <>
Parker, CO USA - Sunday, May 14, 2000 at 09:47 PM (MDT)

This is a very usefull sight. My 9 year old daughter was able to find information presented here in a fashion that she could understand and use to make a really neat sundial. It made a very nice craft activity to accompany her Latin class. Thanks!
Mary Williams
Pleasant HIll, MO USA - Tuesday, April 25, 2000 at 10:38 AM (MDT)

I'm an 8th grade Earth Science teacher, and I often use your daily images in my teaching. Thnaks for putting all of these great images and facts in one easy to access location
Charles F. Lindgren < >
Scituate, MA USA - Monday, April 10, 2000 at 02:12 PM (MDT)

I was looking for a simple sundial my first graders could make with the help of some fifth grade students for Sky Awareness Week April 23-29. I am certain that we could do this one at the novice level...and they will be delighted with the results! I'll let you know how it goes.
Donna Smith <>
Bath, ME USA - Saturday, April 08, 2000 at 02:15 PM (MDT)

My first graders really enjoyed our visit! Thanks for the movies!
Regina Watts <>
Talladega, Al USA - Wednesday, April 05, 2000 at 12:03 PM (MDT)

Your site is very advantage. I like to visit again
Dharshana Perera <>
colombo, Sri Lanka - Wednesday, March 22, 2000 at 11:16 PM (MST)

This was the greatest web sight, my mom found it for me to explain the Spring Equinox. Then we have the YPOP films great stuff. We love to look at the stars at night, maybe someday we will even be able to get a telescope! I am an eight year student in 3rd grade at Sandmeier School in Springfield, New Jersey Thanks for the information and the great pictures, I'm sure we will visit your site alot! Mikey
Mikey Tighe <>
Springfield, NJ USA - Friday, March 10, 2000 at 08:01 AM (MST)

This is an excellent outreach web site! Thanks very much the useful information about the Sun, all the nice images and movies. I am using them in a college astronomy class.
Lynn Cominsky <>
Rohnert Park, CA 94928 - Tuesday, February 15, 2000 at 03:09 PM (MST)

I like the information very much.The photographs are very sharp and illustrat ive. I appreciate the information provided for my querry. Thanks.
T.Laxmi Naga Nirmal Sri Charitha Madhurima <>
Vijayawada, A.P. India - Tuesday, February 08, 2000 at 03:45 AM (MST)

Room 7 second grade <plebsock@jeff>
Golden, co usa - Wednesday, January 12, 2000 at 01:52 PM (MST)



I am a teacher at Montville Township High School in New Jersey. I recently found your site through the NASA cool picks and used the YOHKOH satellite lesson with my physics class. Thanks for the help!
Ruth Starkins <>
NJ USA - Thursday, February 19, 1998 at 07:57 PM (MST)

A great site for an amatuer astronomer like me who is just beginning to study the sun. Until now I have been content to use my 8" scope and solar filter. Now, viewing the daily images is part of my daily routine. Thanks for the great job.
David Gardner <>
st augustine, fl USA - Wednesday, February 18, 1998 at 08:08 PM (MST)

WOW!! This is just FANTASTIC!! Wish I had found you sooner. You have done a GREAT job. I teach 8 grade science, and you have done a wonderful job of preparing lesson plans. Your lesson on filters accomplishes what I have failed to do : How do astronomers learn about things in the universe just by studying light? I am really excited about your work. I plan to use your lessons next year and let other teachers know about your work. Thanks!
Robert Talbert <>
charleston, SC Charleston - Thursday, March 26, 1998 at 08:30 PM (PST)


Thank you for your information - This will help me with my Science Project!!! !!!!!!
Dennis Girard <>
Windsor, On Canada - Tuesday, May 06, 1997 at 08:18 (MDT)

The sundial pages are excellent - just what I think will get the children interested and on to their project. We are a little country school of 41 children and the nearest large library is about 45 minutes away so refrence material is not easy to come by. Thanks again.
Bruce Groves (teacher) <>
Whangarei, New Zealand - Sunday, August 17, 1997 at 06:02 PM (MDT)

This is a very informitive site. Throuhg your site I have been able to confirm the fact that I will now be majoring in Astronomy, durring my college years. Thanks for all the info JP
John D. Parker. < Tacoma, Wa USA - Thursday, October 23, 1997 at 03:08 PM (MDT)

I am a homeschooling mom of 7 children can't wait until you have completed the rest of the info for education. The class room portion of this site is excellent. We have used this for part of our science curriculum for today. Thanks, Michelle Please contact me by e-mail re:more great science info.
Michelle Bartlett <>
Bigfork, MT USA - Monday, April 28, 1997 at 10:29 (MDT)

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