Anuradha TK is an Indian electrical engineer. She is the most senior woman scientist @isro and is a Geosat Programme Director, overseeing the launch of several geo-synchronous satellites. She won the Astronautical Society of India Gold Medal in 2003.#STEMlegends #WomenInSTEM pic.twitter.com/x1VLWj1Ijv

— RAS Diversity (@RAS_Diversity) March 31, 2019

Peggy Whitson (@AstroPeggy) is an American biochemist and astronaut. She first went to the ISS @SpaceStation in 2002, and again in 2007, when she became the first woman Space Shuttle Commander. She has spent 665 days in space in total#STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/fVz5o1ABPR

— RAS Diversity (@RAS_Diversity) March 30, 2019

Rohini Godbole is an Indian physicist and science communicator. She gained her PhD from @iitbombay, and is currently a professor at the Centre for High Energy Physics @iiscbangalore, where she researches physics beyond the standard model.#STEMlegends #WomenInSTEM pic.twitter.com/EULp1cVwhZ

— RAS Diversity (@RAS_Diversity) March 29, 2019

Helen Sharman is a British chemist, astronaut, and science communicator. She gained her PhD from @BirkbeckUoL, and became the first British person in space, and the first woman to visit the Mir space station in 1991.#STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/LCzeDE0ohp

— RAS Diversity (@RAS_Diversity) March 28, 2019

Sunita Williams (@Astro_Suni) is an American astronaut and United States Navy officer. She first went to space in 2006, and has since spent 321 days in space and conducted seven spacewalks. She ran the first marathon in space in 2007.#STEMlegends #WomenInSTEM pic.twitter.com/KqHsJwcCLQ

— RAS Diversity (@RAS_Diversity) March 27, 2019

Maryam Mirzakhani was an Iranian mathematician and a professor of mathematics @Stanford. She was awarded the Fields Medal in 2014 for her work on Riemann surfaces, making her the first woman, and the first Iranian person, to receive this award.#STEMlegends #WomenInSTEM pic.twitter.com/18FMru9ZtH

— RAS Diversity (@RAS_Diversity) March 26, 2019

Samantha Cristoforetti (@AstroSamantha) is an Italian engineer, astronaut, and @ItalianAirForce pilot. She spent 199 days on the ISS @Space_Station from 2014-2015 where she conducted numerous scientific experiments. #STEMlegends #WomenInSTEM pic.twitter.com/ZAt8yoyVFX

— RAS Women in STEM (@RAS_Women) March 25, 2019

Ellen Ochoa is an American electrical engineer and astronaut. She gained her PhD from @Stanford in 1981 and became the first Hispanic woman to go to space in 1993. She travelled to space three more times and became Director of @NASA_Johnson in 2012.#STEMlegends #WomenInSTEM pic.twitter.com/VqcUIASUq2

— RAS Women in STEM (@RAS_Women) March 24, 2019

Alice Bowman (@plutoport) is an American physicist. She is currently @NASA’s first woman Mission Operations Manager, as Mission Operations Manager for @NASANewHorizons at @JHUAPL. Previous to this, she worked in the defence industry.#STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/Z1TpQKMwjK

— RAS Women in STEM (@RAS_Women) March 23, 2019

Kathleen Rubins (@Astro_Kate7) is an American biochemist and astronaut. She gained her PhD from @StanfordMed and spent 115 days on @Space_Station in 2016, where she conducted two spacewalks and became the first person to sequence DNA in space.#STEMlegends #WomenInSTEM pic.twitter.com/FlPfAUdPbq

— RAS Women in STEM (@RAS_Women) March 22, 2019

Rosemarie Wesson is an American engineer. She became the first black American woman to receive a PhD in chemical engineering @UMich in 1988, and the first woman treasurer of @ChEnected in 2018. She is currently Associate Dean of Research @CityCollegeNY#STEMlegends #WomenInSTEM pic.twitter.com/XOMSBzVcKN

— RAS Women in STEM (@RAS_Women) March 21, 2019

Kathryn Whaler is a British geophysicist. She gained her PhD @Cambridge_Uni in 1981 and became the third (and latest) woman president of @RoyalAstroSoc in 2004. She is currently a professor @GeosciencesEd.#STEMlegends #WomenInSTEM #WomansHistoryMonth #WomansHistoryMonth2019 pic.twitter.com/k3WAAkVaOl

— RAS Women in STEM (@RAS_Women) March 20, 2019

Liu Yang is a Chinese pilot and astronaut. She is a major in the PLA Air Force and became the first Chinese woman in space in 2012 aboard Shenzhou 9. This was the first crewed mission to the Chinese space station Tiangong 1.#STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/5I7ibwNJ3C

— RAS Women in STEM (@RAS_Women) March 19, 2019

Svetlana Savitskaya is a Russian aviator and cosmonaut. She became the second woman in space in 1982 and the first woman to fly to space twice, and the first woman to perform a spacewalk, in 1984, as well as setting several world records as a pilot.#STEMlegends #WomenInSTEM pic.twitter.com/ZbIXZMAaxx

— RAS Women in STEM (@RAS_Women) March 18, 2019

Millie Hughes-Fulford is an American molecular biologist and astronaut. She was a major in the US Army Reserve Medical Corps until 1995 and spent 9 days in space in 1991 conducting biomedical experiments. She is currently a Professor @UCSFHospitals.#STEMlegends #WomenInSTEM pic.twitter.com/TYD5FgRiWX

— RAS Women in STEM (@RAS_Women) March 17, 2019

Shannon Lucid is an American biochemist and astronaut. She has flown to space five times, starting in 1985, and is the only American woman to have served aboard the Mir space station. She spent 179 days on-board Mir in 1996.#STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/HgO3kCuR0E

— RAS Women in STEM (@RAS_Women) March 16, 2019

Carole Jordan is a British astronomer specialising in UV and x-ray spectra. She became the first woman president of @RoyalAstroSoc in 1994, and became the 3rd woman to win @RoyalAstroSoc’s gold medal in 2005, after Caroline Herschel and Vera Rubin.#STEMlegends #WomenInSTEM pic.twitter.com/haXk9KfBsA

— RAS Women in STEM (@RAS_Women) March 15, 2019

Yi So-yeon (@MsCoolAstro) is a Korean astronaut and biotechnologist. She became the first Korean person in space in 2008, where she studied the effects of changes in gravity on life forms, including plants and fruit flies. #STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/tCr6NGvoQx

— RAS Women in STEM (@RAS_Women) March 14, 2019

Ozak Esu (@esu_o) is a Nigerian electrical engineer. She completed her PhD in 2016 at @lborouniversity and designs the electrical services for buildings. She was awarded the @TheIET’s Young Woman Engineer of the Year Award in 2017.#STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/fon53zWdgS

— RAS Women in STEM (@RAS_Women) March 13, 2019

Ada Yonath is an Israeli chemist and pioneer of cryo bio-crystallography. She used this to study the structure and function of ribosomes. Yonath shared the 2009 Nobel Prize in Chemistry for this, making her the 4th woman to win a Nobel Prize in Chemistry#STEMlegends #WomenInSTEM pic.twitter.com/GR8QiYMLjK

— RAS Women in STEM (@RAS_Women) March 12, 2019

Vera Rubin was an American astronomer. She showed that galaxies are clumped together in clusters and provided the first evidence of dark matter in spiral galaxies. Rubin became the second woman to be presented with a Gold Medal from@RoyalAstroSoc in 1996#STEMlegends #WomenInSTEM pic.twitter.com/bNQ4bl72tH

— RAS Women in STEM (@RAS_Women) March 11, 2019

Helen Edwards was an American physicist. She became Associate Head of the Booster Group at @Fermilab in 1970. Edwards became Lead Scientist in the design and construction of the Tevatron in the 1980s. This was used to discover the top quark in 1995. #STEMlegends #WomenInSTEM pic.twitter.com/wrGP1zWbzR

— RAS Women in STEM (@RAS_Women) March 10, 2019

Chiaki Mukai is a Japanese medical doctor and astronaut. She was the first Japanese woman in space in 1994, and became the first Japanese person to fly to space twice in 1998. She has spent 23 days in space in total and is a Technical Counsellor @JAXA_en#STEMlegends #WomenInSTEM pic.twitter.com/znlAOEkXl5

— RAS Women in STEM (@RAS_Women) March 9, 2019

Tabetha Boyajian (@tsboyajian) is an American astronomer. She is an Assistant Professor @LSU, having previously worked with Debra Fischer @Yale. She led the team that investigated the unusual light curve of KIC 8462852 - now known as Tabby's Star. #STEMlegends #WomenInSTEM pic.twitter.com/r7WV2n0lhD

— RAS Women in STEM (@RAS_Women) March 8, 2019

Nadya Mason is an American quantum physicist and Professor of Physics at @Illinois_Alma. She is also a General Councillor for the @APSphysics and Chair of the APS Committee on Minorities. She was formally a gymnast and member of the US National Team. #STEMlegends #WomenInSTEM pic.twitter.com/UsihtAldAc

— RAS Women in STEM (@RAS_Women) March 7, 2019

Joan Clarke was a British mathematician. She earned her degree @Newnham_College, but was not granted one because she was a woman. She worked as a code-breaker at Bletchley Park during WWII and gained an MBE in 1946 for her role in the Enigma project.#STEMlegends #WomenInSTEM pic.twitter.com/cjUu3dhyEs

— RAS Women in STEM (@RAS_Women) March 6, 2019

Sandra Moore Faber is an American astronomer. She co-authored the Faber-Jackson relation, which lets us calculate the distance to stars in elliptical galaxies. She headed the team that discovered the Great Attractor and helped design @keckobservatory. #STEMlegends #WomenInSTEM pic.twitter.com/yzz5plSTgl

— RAS Women in STEM (@RAS_Women) March 5, 2019

Priyamvada Natarajan (@SheerPriya) is an Indian astronomer and author. She gained her PhD @Cambridge_Uni and is currently a Professor @Yale. Her work includes mapping dark matter and dark energy, and studying the evolution of supermassive black holes.#STEMlegends #WomenInSTEM pic.twitter.com/iHQCvQ99i2

— RAS Women in STEM (@RAS_Women) March 4, 2019

Nia Imara is an American astrophysicist and artist. She became the first black American woman to gain a PhD in physics from @UCBerkeley, in 2010. She’s since become a Fellow @Harvard, studying stellar nurseries. She opened her first art gallery in 2014.#STEMlegends #WomenInSTEM pic.twitter.com/jGIi9uKEvR

— RAS Women in STEM (@RAS_Women) March 3, 2019

Pauline Harris is an astronomer at @VicUniWgtn specialising in gamma ray bursts. She is from the tribes Rongomaiwahine and Ngāti Kahungunu and is Chairperson of the Society of Māori Astronomy Research and Traditions (SMART).#STEMlegends #WomenInSTEM #WomansHistoryMonth pic.twitter.com/9L6SPry5ok

— RAS Women in STEM (@RAS_Women) March 2, 2019

Sarah Hörst (@PlanetDr) is an American astronomer. She specialises in atmospheric chemistry, particularly the complex organic chemistry occurring in the atmosphere of Titan, and is currently an assistant professor at @JohnsHopkins. #STEMlegends #WomenInSTEM pic.twitter.com/mGsKhHz8q4

— RAS Women in STEM (@RAS_Women) March 1, 2019