| michyang ("I am a student from Shanghai.") |  | madmike ("https://orcid.org/0000-0001-8442-7973") | |
| mrsm ("Maktab Rendah Sains MARA, Kota KInabalu, sabah") |  | Mago6 | |
| Mordicus ("Hello") |  | microchip ("Just your local computer geek interested in and trying to help out astronomy/physics and...") | |
 | MSK ("I like to support science, that's why I'm here. I am a doctor by profession.") | Mark Watney ("mwatney.com") |