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

Priyamvada Natarajan

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

Priyamvada Natarajan

" The deep fascination with the mysterious, and the impulse to seek and locate ourselves in the cosmic context, seems to be imprinted in our DNA and psyches. "

Priyamvada Natarajan

" The precise effects of lensing depend on the mass of the lens, the structure of space-time, and the relative distance between us, the lens, and the distant object behind it. It's like a magnifying glass, where the image you get depends on the shape of the lens and how far you hold it from the object you're looking at. "

Priyamvada Natarajan

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

Priyamvada Natarajan

" Mental discipline and tenacity in the face of obstacles are traits that have greatly helped me in both my personal and professional journey thus far. I am also very optimistic by nature and tend to focus on the positive and remain hopeful when faced with adversity. "

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. "

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. "

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. "

Priyamvada Natarajan

" We knew from theoretical models that mergers of massive, gas-rich galaxies were more frequent in the past. Now we've found that these mergers are responsible for producing both the nearby obscured quasar population and their distant cousins. "

Priyamvada Natarajan

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

Priyamvada Natarajan

" 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. "

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

" Scientific knowledge is, by its nature, provisional. This is due to the fact that as time goes on, with the invention of better instruments, more data and better data hone our understanding further. Social, cultural, economic, and political context are relevant to our understanding of how science works. "

Priyamvada Natarajan

" 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. "

Priyamvada Natarajan

" I fell in love with the night sky when I first looked through a telescope as a young girl growing up in Delhi. "

Priyamvada Natarajan

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

Priyamvada Natarajan

" 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. "

Priyamvada Natarajan

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

Priyamvada Natarajan

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

Priyamvada Natarajan

" 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. "

Priyamvada Natarajan

" 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. "

Priyamvada Natarajan

" Science is evidence-based and provides a continuing understanding of complex natural phenomena. Our understanding is constantly evolving and continually improving. "

Priyamvada Natarajan

" 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. "

Priyamvada Natarajan

" 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. "

Priyamvada Natarajan

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

Priyamvada Natarajan

" Everyone acknowledges that there is a political part to tenure, but no one likes to admit it. "

Priyamvada Natarajan

" Perhaps more than English or history, STEM subjects require an enormous amount of foundational learning before students can become competent. "

Priyamvada Natarajan

" 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. "

Priyamvada Natarajan

" Black holes are enigmatic astronomical objects, areas where the gravity is so immense that it has warped spacetime so that not even light can escape. "

Priyamvada Natarajan

" We must face up to a difficult paradox: The U.S. can maintain a leading position in science only by giving up its desire to be number one. "

Priyamvada Natarajan