I am so glad you are using the Help Center to get suggestions for teaching. We are here to assist you and encourage other teachers to share their ideas too.
For space resources, I recommend reading the blog Space Exploration that has links to many websites with lessons and activities for teachers and students. Additional resources are available in the discussion Are Your Children Fascinated with Outer Space? Also check out the blog Literacy Activities on Astronauts and Space Travel.
Regarding animal rights, I recommend the discussions Favorite Endangered Animal Resources and Re: What are your favorite activities and resources for teaching kids about animal habitats?
If you need additional information, please let us know, and we will research the topics more thoroughly. Also if you find resources to use with your students, please share your experiences.
Thanks for your question.
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I just found this information on Animal Adaptations on the ScienceNetLinks partner website. You can view it at Animal Adaptations - Science NetLinks. The National Geographic Education website another partner site has 3 pages of resources on Space Exploration. It can be seen at Search Results - National Geographic Education. This site also has some on Animal Habitats. The Smithsonian's History Explorer has Space Exploration as one of its topics too. Hope these help. Thank you for asking such a good question.
I see you're looking for primary sources, rather than partner resources.
For space exploration, the obvious answer is NASA. They have tons of information, as do many of the other nation's space agencies, including Canada, and links to the labs that do a lot of the work for themhttp://www.asc-csa.gc.ca/eng/. Russia also has a space agency, but I can't seem to get the English feature of their website to work for me, so that may be less useful unless you read Russian.
Your question about animal rights is more complicated. Can you give me more detail about what you're looking for? In the meantime, the Animal Welfare Information Center at the USDA is probably a good place to start. Journals, such as Science, Nature, and PLOS ONE, can tell you about animal-related studies. It also looks like there's specifically an animal welfare journal published in the U.K., but accessing it is pricey. There's also one in the U.S., and it looks like some of its articles can be accessed for free.
And, honestly, I think it's perfectly fine to go to Wikipedia as a place to start, particularly if you explore the external links and footnotes you find at the end of most articles. These aren't foolproof, and you will have to use common sense and question the validity of the sources, but it can be an illuminating way to narrow in on research.
Let us know if any of this is helpful or if we're misunderstanding your question.