Merieme Chadid (Arabic: مريم شديد; born 11 October 1969 in Casablanca) is a Moroccan-French astronomer, explorer and astrophysicist.^[1][2] She leads international polar scientific programs and has been committed to installing a major astronomical observatory at the heart of Antarctica.^[1][3][4]

Chadid was born October 11, 1969, in Casablanca to a Moroccan family. Her father and mother were a blacksmith and a housewife respectively. She was one of seven children. At 12 years old, she discovered her love of astronomy from a Johannes Kepler book gifted to her by her brother.^[5][6] In 1992, Chadid graduated from the University of Hassan II Casablanca with a master's degree in Physics and Mathematics. In 1993, she graduated from the University of Nice Sophia Antipolis with a Master of Advanced Studies and three years later earned her PhD in Astronomy and Space from the Paul Sabatier University from her research detecting hypersonic shock waves in pulsating stars and explaining their origin.^[5] She also obtained the highest university qualification degree Habilitation HDR, a second PhD, at the University of Nice Sophia-Antipolis. Chadid completed several executive education programs at John F. Kennedy School of Government, Harvard University as well.^[7]

Merieme Chadid joined the Centre national de la recherche scientifique and then the European Southern Observatory soon after earning her PhD. She worked on European Southern Observatory for the installation of The Very Large Telescope, the largest telescope in the world at the time, in the Atacama Desert in northern Chile. She works as an astronomer in the French public university system. Chadid is Vice President of the International Astronomical Union since 2021.^[5], Division G, Stars and Stellar Physics and a steering committee member of the International Astronomical Union.^[5]

Chadid became the first Moroccan as well as the first female French astronomer to reach the heart of Antarctica, and the first to plant an Arab and an African flag (the Moroccan flag) in Antarctica^[8][7] in 2005 when she achieved her first polar expedition to set up a new observatory.^[5] Of her many achievements, her most treasured accomplishment has been her work under extreme conditions in the heart of Antarctica, one of the highest, coldest, most deserted and inaccessible places in the world. She is considered the world's first astronomer to be committed to installing the large astronomical observatory in Antarctica, where she has carried out pioneering work. In interviews, she has compared the installation of the observatory to a space mission, an area characterized by only a thin layer of turbulence, making it easier to observe faraway objects than observatories in other parts of the world. As night continues for several months of the year, researchers at the Antarctica stations have the advantage of being able to study the stars 24/7.^[7]

Chadid promotes education by giving lectures, attending conferences, supervising students, and her documentary on astronomy, Tarik Annujah, has played on the Al Jazeera Children's Channel.^[5] Her most published research aims to understand and decipher early star formation and the stellar evolution and pulsation towards of understanding of the Universe.^[7]

She was listed by Forbes magazine as one of the thirty most interesting and fascinating workers in the world.^[8]

Merieme Chadid has been married to Jean Vernin, Director of Research of Centre National de Recherche Scientifique, since 31 March 2001; they have two children.

• Young Global Leader at the World Economic Forum (2008)^[7]
• Arab Woman of the Year Award for Achievement in Science by Regent's University London (2015) (first group to be recognized)^[9][7]
• Officer of the Order of Ouissam Alaouite bestowed by His Majesty The King of Morocco in 2013^[6]

• Timeline of women in science
• Women astronomers