what kind of engine did Artimus 1 use and how does it work on earth and around the moon?
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The Space Launch System (SLS) uses a core stage at liftoff of four RS-25 engines and two solid rocket boosters (SRB), all of which are derived from basically the same things built for the Space Shuttle (only differences are that the Space Shuttle only had 3 RS-25 engines, and the SRBs on SLS are larger). The RS-25’s run on liquid hydrogen and liquid oxygen, whereas the SRBs get most of their thrust from the combustion of ammonium perchlorate and aluminum powder.
The Orion capsule uses hypergolic propellants (i.e. fuels and oxidizers that react on contact with each other), so probably dinitrogen tetroxide and some flavor of hydrazine. Again, hypergolic propellants have been inspired by similar systems on the Space Shuttle, and hypergolics have actually been in use for spaceflight for decades.
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