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" I am a phenomenologist - I work on developing theoretical models that are constrained by observations. "

Priyamvada Natarajan

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" The invisible and unseen has always fascinated us humans. "

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" We cannot explain the phenomenon of gravitational lensing without general relativity, and this is where MOND spectacularly fails. "

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" Data suggest that central black holes might play an important role in adjusting how many stars form in the galaxies they inhabit. For one thing, the energy produced when matter falls into the black hole may heat up the surrounding gas at the center of the galaxy, thus preventing cooling and halting star formation. "

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" I am obsessed with trying to understand why there is such rampant denialism of science in our country. I find this exuberant irrationalism extremely disturbing. And this is particularly troubling, because I am a professional scientist. "

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" Dark matter is particularly intriguing because it's some kind of particle - that's for sure. "

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" Evidence has been mounting for the key role that black holes play in the process of galaxy formation. But it now appears that they are likely the prima donnas of this space opera. "

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" Being nimble and ready to change our minds if need be is an attribute that is crucial to live and thrive in a society that is powered by science and technology, both as an individual and as an engaged citizen. "

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" Research in basic sciences now requires resources that no one country can provide. "

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" As an astrophysicist, my research work involves mapping dark matter, the elusive substance that accounts for about a quarter of our universe. "

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" Dark matter is one of the dominant constituents of the universe, which piled up in certain parts of the universe due to gravity, and in those regions, galaxies were formed. It is the unseen thing that holds the universe together. "

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" I am a professor of astronomy and physics at Yale University, where I teach an introductory class in cosmology. I see the deficiencies that first-year students show up with. "

Priyamvada Natarajan

" We already have a pretty good knowledge of the universe's mass-energy content, so if we can get a handle on its geometry, then we will be able to work out exactly what the fate of the universe will be. "

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" We need to make sure that the Voyager probes carrying a record of human civilization speeding beyond our solar system remain an introduction to the world that sent them and not an epitaph for a civilization that caused its own ruin. "

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" My own day-to-day observations confirm that many Americans can barely make change. At the supermarket where I buy groceries, I've watched more than one encounter at the cash register where both customer and clerk are befuddled at the prospect of double-checking the sums. "

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" All the particles that we are made of only account for about four per cent of the cosmic inventory. "

Priyamvada Natarajan

" Individuals reporting on their own experience with particular therapies would provide first-hand accounts that could be considered in the improvement of drug design. "

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" It is my idea that the public needs to be better educated about the nature of scientific inquiry and how the scientific process works. I firmly believe that this is the only effective way forward to combat the widespread distrust in facts and science. "

Priyamvada Natarajan

" If you know the shape of the lens and the image you get, you can work out the path that light followed between the object and your eye. "

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" The early universe was a dusty place, and the UV radiation from the hot, young black holes and stars would get enshrouded by dust, re-radiated, and scattered into red wavelengths like infra-red, causing these objects to remain obscured. "

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" My students may have dexterity with the equations they're required to know, but they lack the capacity to apply their knowledge to real-life problems. This critical shortcoming appears in high school and possibly in elementary grades - long before college. "

Priyamvada Natarajan

" No one wants to walk across a crowd-sourced bridge. "

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" Evidence-based reasoning underpins all scientific thinking, and it involves testing hypotheses or theories against data. Validating a theory requires replicable measurements from independent groups with different equipment and methods of analysis. Convergence of evidence is critical to the acceptance of a scientific idea. "

Priyamvada Natarajan

" The geometry, the content, and the fate of the universe are all intricately linked. If you know two, you can deduce the third. "

Priyamvada Natarajan

" The existence of dark matter and dark energy are inferred from observations! They are not theoretical constructs. Though invisible, both reveal their presence through the effects that they exert on motions of celestial bodies and in the case of dark matter - the bending of light as well. "

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" Growing up in Delhi, India, I did puzzles, explored numbers, and searched for patterns in everyday settings long before I ever saw an equation. "

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" In addition to a well-funded school system, we need to encourage and exploit innovative approaches for learning outside the classroom. "

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" I'm an astrophysicist and a professor, so my day job involves manipulating intractable numbers that characterize our universe. "

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" Research in any domain of science today requires specialized training to build up knowledge and clinical competence. To make major breakthroughs, we need people with expertise who are engaged in sustained research over a long period of time - in a word, scientists. "

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" Finding the first seed black holes could help reveal how the relation between black holes and their host galaxies evolved over time. "

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" Progress in science occurs in fits and starts, and paradigm shifts occur when evidence can be marshaled to support a new point of view. "

Priyamvada Natarajan