References
Newton's Laws:
[1] All three laws - https://www.grc.nasa.gov/WWW/k-12/rocket/TRCRocket/rocket_principles.html
[2] Newton's 2nd law (What is mass?)
https://sciencing.com/mass-weight-7721316.html
[3] Newton's 2nd law (What is acceleration?)
https://www.coolkidfacts.com/acceleration/
[4] Newton's 3rd law (main page and subpage) - https://www.bbc.co.uk/bitesize/guides/zgn82hv/revision/7
[5] Newton's 3rd law (subpage)
https://www.coolkidfacts.com/laws-of-motion/
[6] Newton's 3rd law (examples)
https://www.bbc.co.uk/bitesize/guides/zqs47p3/revision/4
Orbits
[1] What is an Orbit? (main page and subpage)
[2] Satellites
https://www.nasa.gov/directorates/heo/scan/communications/outreach/funfacts/txt_satellite.html
[3] Artificial Satellites
https://kids.kiddle.co/Satellite_(artificial)
[4] How to orbit Earth?
https://spaceplace.nasa.gov/launching-into-space/en/
[5] Equation for Orbital Speed
https://www.bbc.co.uk/bitesize/guides/zqq6cwx/revision/4
[6] Geostationary orbits
https://www.esa.int/Enabling_Support/Space_Transportation/Types_of_orbits
[7] Elliptical orbits
https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-orbit-58.html
Escape Velocities
[1] What is Escape Velocity?
https://study.com/academy/lesson/escape-velocity-lesson-for-kids.html
[2] Escape Velocity (Ball Example) & Value of EV on surface of the Earth
Re-entry
[1] What happens during re-entry?
[2] Re-entry and
https://www.grc.nasa.gov/www/BGH/hihyper.html
[3] Heat Shields, How do they work? & Deceleration
https://academickids.com/encyclopedia/index.php/Atmospheric_reentry