January 21, 2017

Review: Exploring the Saros with Eclipse-Maps!

Paths over North America from 2001-2050.

(Click to enlarge)

(Courtesy of Eclipse-Maps)

It happens sometimes in the world of astronomy journalism. One of the funniest stories Iíve ever heard science journalist Bob Berman tell was that of an irate eclipse chaser. He had used his erroneous article based on a faulty prediction to plan his vacation to St. Kitts, which lay well outside of the path of totality. [Read more...]

04.02.11: A Gravitational Lensing Exoplanet.

Artist’s rendition of the gravitational lens technique MOA uses to spot exoplanets…(All Images coutesy of the MOA Consortium: Used with Permision).

Amid the sexier transiting exoplanet discoveries released earlier this week by the NASA Kepler team came an exoplanet discovered by a lesser known technique; that of gravitational lensing. MOA, or Microlensing Observations for Astrophysics, is a joint Japan/New Zealand venture looking for dark matter objects passing in front of stars and bending their light via gravitational lensing. First predicted by Einstein and famously observed during the total solar eclipse of 1919, several gravitational lenses are now known and documented in nature, from stellar type objects to massive galaxy clusters. [Read more...]