PICTOR: Telescope Control
This website allows you to control a telescope that uses radio waves to observe certain space objects for free! There is also a guide on the website (you can find it by clicking here on the website). It offers lots of information that would help in using the telescope
https://pictortelescope.com/observe
NASA Solar System Exploration:
This is a website that was made by NASA that holds a ton of information about astronomical objects in our Solar System! It even shows lots of fun facts about certain planets, moons, asteroids, comets, and/ or meteors like how long a year is on that planet (in earth days/years). Also, it shows a visual representation of the Solar System as a whole, and it shows a visual representation of each and every planet on its own.
A Slower Speed of Light:
This is a game made by MIT Game Lab that helps people understand relativity in a better way. The quest in this game is to collect orbs that slow down the speed of light to reach the maximum speed reached by the character walking in-game. This would show some effects that might actually happen if this was possible in real life. You can read more about it on the website above.
http://gamelab.mit.edu/games/a-slower-speed-of-light/
CEARUN:
CEARUN is a NASA database/program that has many thermodynamics-related uses. One of the popular things to use this program for is to analyze rocket fuel performance. The manual is on the site and youtube has many tutorials.
Youth Physics Society 