"eFluids is a specialty web portal designed to serve as a one-stop web information resource for anyone working in the areas of flow engineering, fluid mechanics research, education and directly related topics."
The NMC "is an on-line information system providing information about past, present, and future NASA and non-NASA spaceflight missions and about the investigations flown or scheduled to fly on those missions. The NMC also provides detailed information about data primarily archived at the NSSDC. In addition, the NMC describes publications and people."
Science.gov searches over 45 databases and over 2000 selected websites from 14 federal agencies, offering 200 million pages of authoritative U.S. government science information including research and development results.