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Keivan Stassun Stevenson Professor of Physics

Expert in the search for Earth-like planets across the galaxy and an advocate for diversity, including neurodiversity, in the academy.


Media Appearances

“Six Light-Years Away”–TESS Exoplanet Team Will Observe 400,000 Stars

The Daily Galaxy March 25, 2019
“This is a remarkable time in human history and a huge leap for our understanding of our place in the universe,” said astronomer Keivan Stassun of Vanderbilt University, a member of the TESS science team that will observe 400,000 stars across the whole sky to catch a glimpse of an exoplanet transiting across the face of its star. The stars selected are bright, cool dwarfs, with temperatures roughly between 2,700 and 5,000 degrees Kelvin. The closest are only approximately 6 light-years from Earth.

De-emphasize GREs, look broadly for new Ph.D. students: expert

Cornell Chronicle October 09, 2018
“The fact is, there are a lot of people lining up and paying good money to take these exams, presumably not for the fun of it, presumably because they’re at least contemplating going to graduate school,” Stassun said. In addition to overlooked students, “There really are lots of students who don’t even bother applying because they see the outcomes of their GRE scores and they think they know what that implies for their chances. And, unfortunately, in many cases, they’re probably right.”

Super hot planet bigger than Jupiter might be disappearing

CNET June 05, 2017
"KELT-9 radiates so much ultraviolet radiation that it may completely evaporate the planet," Vanderbilt's Keivan Stassun said in a release. "Or, if gas giant planets like KELT-9b possess solid rocky cores as some theories suggest, the planet may be boiled down to a barren rock, like Mercury." The team has published a paper describing the planet in the journal Nature and is also presenting it this week at a meeting of American Astronomical Society in Austin.

Flawed Data Just Made That 'Alien Megastructure' Even More Unlikely

Gizmodo May 09, 2016
“Whenever you are doing archival research that combines information from a number of different sources, there are bound to be data precision limits that you must take into account,” explained study co-author Keivan Stassun in a statement. “In this case, we looked at variations in the brightness of a number of comparable stars in the DASCH database and found that many of them experienced a similar drop in intensity in the 1960’s. That indicates the drops were caused by changes in the instrumentation not by changes in the stars’ brightness.”

A Graduate Program Works To Diversify The Science World

NPR January 01, 2014
"For too long we've thought about diversity as this problem sort of after the fact," says Keivan Stassun, an astronomy professor at Vanderbilt University. Stassun helped found the Bridge Program — a partnership between Vanderbilt and nearby Fisk, a historically black university — which was created in 2004 with the goal of increasing the numbers of women and underrepresented minority students earning Ph.D.s in science. "In reality," Stassun says, "the diversity is there, and we've been seriously filtering it out. And we've been filtering it out on the basis of things that are not actually predictive of who's going to succeed and who's going to fail." Those things are, mostly, GRE scores and GPA.