Wu, who loves ballet as much as she loves astronomy, learned to dance when she was very little but took a lengthy hiatus and only picked it up again a few years ago. “The science enhances the dance, and the dance enhances the science,” said judge Emily Kent from the dance company Pilobolus. The judges of “Dance Your Ph.D.” say this year’s competition winners used movement creatively to clearly explain their research. The result is a universe that is not cold, dark, and neutral, but bright, ionized and hot. Time after time, newly emitted photons from newly formed stars interact with neutral hydrogen atoms, allowing light to escape farther and travel freely throughout the universe. This small dance between the two particles is transformational for the early universe. These atoms act as a barrier, preventing the light from traveling further outwards.īut when a photon and hydrogen atom eventually interact - conveyed by Wu picking up a hand fan and twirling with it in the dance - the hydrogen atom loses an electron and becomes positively charged or ionized. As the photons begin to travel outwards from the star, they encounter a thick gas that contains neutral hydrogen atoms. In her choreographed dance, Wu plays one of many photons - or particles of light - that are emitted from the first star. “I just felt like I should do this video as a tribute to astronomy and as a proper end to my Ph.D.,” she said.ĭuring her time at the Center for Astrophysics, Wu studied the epoch of reionization, a period about 12 billion years ago when the first stars and galaxies began to form, lighting up the utterly dark universe. Wu, who is set to graduate this May, says she participated in the competition because it is her final year at the Center for Astrophysics | Harvard & Smithsonian.

The contest, now in its 14th year, is divided into four categories: biology, chemistry, physics, and social sciences, and is judged by a panel of dancers, scientists, and artists who watch a recording of the dance. The competition challenges graduate students and those with Ph.D.s to turn their complex doctoral theses into dances that the general public can understand. On Thursday, Wu was named the winner of the physics category of “ Dance Your Ph.D.,” an international competition hosted by the American Association for the Advancement of Science (AAAS) and Science magazine. She’s a graduate astronomy student who has created an interpretative dance explaining her research on the early universe - and she’s clearly got chops. She stoops, collects an intricate hand fan and proceeds to twirl, delicately waving the fan back and forth as she spins.īut this is not a recital and Wu is no dance student. En pointe and in a poufy pink tutu, Xiaohan Wu gracefully leaps across the marled dance floor.

Dancing wu