Planetarium (star map) software
Stellarium – https://stellarium.org/
Cartes du Ciel – https://www.ap-i.net/skychart//en/start
Virtual Universe
Celestia – https://celestiaproject.space/
Space Engine – https://spaceengine.org/ – commercial, needs power!
Flight simulator
Orbiter – http://orbit.medphys.ucl.ac.uk/
Kerbal Space Program – https://www.kerbalspaceprogram.com/ – commercial
Gravity simulators
Universe Sandbox – https://universesandbox.com/ – commercial
Mobile phone
Mobile Observatory (2) – https://play.google.com/store/apps/details?id=com.kreappdev.astroid&hl=en – Android
Nasa – https://play.google.com/store/apps/details?id=gov.nasa&hl=en
Spacecraft AR – https://play.google.com/store/apps/details?id=gov.nasa.jpl.spacecraftAR&hl=en – AR spacecraft
Online Resources
Nasa Eyes – https://science.nasa.gov/eyes/
Heavens-above – https://heavens-above.com/main.aspx – Satellite predictions
Ursa – https://www.ursa.fi/etusivu.html
Tähdet ja avaruus news – https://www.avaruus.fi/uutiset.html