Famous astronauts with first names that start with M?

• Magnetic field
• Magnetic pole
• Magnetosphere
• Magnitude
• Mars
• Mass
• Matter
• Mercury
• Meteor
• Meteorite
• Meteoroid
• Micrometeorites
• Milky Way
• Miner planet
• Molecule
• Mo
• Moon
• Multiple star

There you go! Hope I helped!