Luke,
I haven’t used Nasa Kids Club (is this it here: https://www.nasa.gov/learning-resources/nasa-kids-club/) but love Nasa Space Place (https://spaceplace.nasa.gov/).
National Geographic Kids is another that I am less familiar with: https://kids.nationalgeographic.com/space where do you recommend to start?
From Nasa Space Place I have just written my own loopy story! I provided the italics words and the site put them into the frame.
Lights in the Night Sky
Last year I traveled so far north, I almost made it to the North Pole. It was so cold that I felt like a frozen pea! I camped in a big sewing machine and made sure to put a lot of paper on the fire to stay warm. One night, I looked up at the bright night sky and saw bright shiniest lights. There were streaks of pale yellow and bright purple. It looked like the colors were crying high in the sky. I thought that I must be bouncing I found out later that I was looking at the aurora borealis, a dark phenomenon that happens when children from the Sun collide with dogs in our atmosphere.