"World-famous theoretical cosmologist Stephen W. Hawking discussed the history of and recent breakthroughs in research on black holes at the inauguration of Harvard's Black Hole Initiative in Sanders Theatre on Monday afternoon.
Astronomer explains plan to send tiny spaceships to Alpha Centauri
"A group of astronomers and technology entrepreneurs has announced an audacious plan to send a fleet of tiny spaceships traveling at a fifth the speed of light to the nearest star, Alpha Centauri.
"The plan would see humankind leap out of the solar system with the aid of an ultralight vessel made of what are essentially cellphone components and a thin, reflective light sail propelled by an enormous array of Earth-based lasers.
Last February a team of astronomers reported detecting an afterglow from a mysterious event called a fast radio burst, which would pinpoint the precise position of the burst's origin, a longstanding goal in studies of these mysterious events. These findings were quickly called into question by follow-up observations. New research by Harvard astronomers Peter Williams and Edo Berger shows that the radio emission believed to be an afterglow actually originated from a distant galaxy's core and was unassociated with the fast radio burst.
Abraham “Avi” Loeb, Chair of Harvard’s Department of Astronomy and C. Meghan Urry, Director of Yale University’s Center for Astronomy and Astrophysics, take us on a tour of these remarkable discoveries.
Graduate student Catherine Zucker’s research was featured on the American Astronomical Society’s “Nova” (News) site! Cara Battersby, SMA postdoc collaborator & Catherine’s REU mentor is the other co-author.
"Archaeologists and astronomers don’t seem to have much in common. One digs into the earth while the other looks at the sky, and a stone tool once wielded by Homo erectus couldn’t be more different from an exploding star at the edge of the visible universe...
"Our Sun is a relatively quiet star that only occasionally releases solar flares or blasts of energetic particles that threaten satellites and power grids. You might think that smaller, cooler stars would be even more sedate. However, astronomers have now identified a tiny star with a monstrous temper. It shows evidence of much stronger flares than anything our Sun produces. If similar stars prove to be just as stormy, then potentially habitable planets orbiting them are likely to be much less hospitable than previously thought" Read more about Tiny, Ultracool Star is Super Stormy