Most content on scientific websites can only be accessed by a paywall / subscription service, but NASA, the U.S. Space agency is making ALL of its publicly-funded, research data availble online for FREE. If people like amateur astronomers or kids studying planets want a good look at hard science research, they can now access the NASA archives online for FREE! NASA also has a dedicated webpage for STEM curriculum materials for educators and schools with FREE lesson plans and teaching aids--the NASA Wavelength website.
