Category Nuances for star_formation:

• astrophysical,
• physical,
• nonlinear,
• natural,
• evolutionary,
• relevant,
• cosmological,
• basic,
• individual,
• complicated,
• unknown,
• violent,
• internal,
• cosmic,
• important,
• complex,

Simple Categories for star_formation:

• system,
• phenomenon,
• process,