Tag Archives: astrophysicist

Princeton astrophysicist Bhattacharjee leads team to create framework for an optimal fusion energy device

Stellarators, fusion facilities with a “twisty” design, have long played second fiddle to doughnut-shaped tokamaks that better confine the plasma that fuels fusion reactions. Now, in a development with major implications for the effort to replicate on Earth the fusion reactions that power the sun and stars to produce a virtually limitless supply of electricity, an international collaboration led by Princeton University has won a major private grant to create the framework for an optimum stellarator that combines the best features of both types of fusion reactors. (more…)

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Why Some Planets Orbit the Wrong Way; Extrasolar Insights into Our Solar System

More than 500 extrasolar planets–planets that orbit stars other than the sun–have been discovered since 1995. But only in the last few years have astronomers observed that in some of these systems, the star is spinning one way and the planet is orbiting that star in the opposite direction.

“That’s really weird, and it’s even weirder because the planet is so close to the star,” said Frederic A. Rasio, a theoretical astrophysicist at Northwestern University. “How can one be spinning one way and the other orbiting exactly the other way? It’s crazy. It so obviously violates our most basic picture of planet and star formation.” (more…)

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