April

Water worlds surface Planets covered by global ocean with no land in sight

April 25, 2013


Illustration courtesy of CfA

Astronomers have found a planetary system orbiting the star Kepler-62. This five-planet system has two worlds in the habitable zone — the distance from their star at which they receive enough light and warmth for liquid water to theoretically exist on their surfaces.

Harvard Gazette

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From Cosmic Dawn To Milkomeda, And Beyond

April 22, 2013

Science Magazine wrote a biographical article on Avi Loeb. From Cosmic Dawn To Milkomeda, And Beyond: The thoughts of Harvard theorist Avi Loeb traverse the universe, past and future—and he urges young researchers to be just as daring (pdf)

Stars align at astronomy reunion: Event draws researchers from around the world

April 11, 2013

Kris Snibbe/Harvard Staff Photographer

Stars align at astronomy reunion: Event draws researchers from around the world.

Left: Ruth Murray-Clay (from left), David Latham, Sara Seager, David Charbonneau, and moderator Charles Alcock were some of the faculty and alumni of the Astronomy Department that recently reunited for a luncheon, panel discussions, and evening reception.

Harvard Gazette Article… Read more about Stars align at astronomy reunion: Event draws researchers from around the world

Harvard Astronomy's Supernova Forensics group has teamed up with Astronomy 100 undergraduate students to unveil the nature of the peculiar SN2012au

April 2, 2013

Harvard Astronomy's Supernova Forensics group has teamed up with Astronomy 100 undergraduate students to unveil the nature of the peculiar SN2012au - a massive star that exploded some 75 million years ago.  This energetic, slow-evolving and helium-rich explosion provides a golden link between the emerging class of "super-luminous" supernovae and other more seemingly normal supernovae that are far less bright.

Some observations of the supernova were obtained by two generations of Astro 100 students in 2012 and 2013 as part of the department's annual Spring Break trip to Fred Lawrence Whipple Observatory in Arizona. Students were the first to classify the new supernova in 2012 with the FLWO 1.5m telescope within just hours of its discovery by the Catalina Sky Survey.  A year later, the next group of students used the FLWO 1.2m telescope to show that SN2012au is still shining bright and thus evolving slowly.  A paper led by postdoc, Dan Milisavljevic, has been submitted to the Astrophysical Journal Letters with details on this unusual stellar explosion (link).

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