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#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silentsky
#henrietta swan leavitt
#henrietta leavitt
#annie jump cannon
#harvard observatory
#women scientists
#women in stem
#cepheid variable stars
#period-luminosity relation
#silent sky
#silentsky
#henrietta leavitt
#annie cannon
#harvard observatory
#science
#women in science
#silent sky
#silentsky
#henrietta leavitt
#annie cannon
#harvard observatory
#science
#women in science
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