The value of the eclipse solar radius during 2017 August 21 total was estimated to be $S_{\odot} = (959.95\pm 0.05)"$ at $1\,au$ with no significant dependence on wavelength. measurement obtained from analysis a video flash spectrum recorded southern limit umbral shadow path. Our conducted by extracting light curves and comparing them simulated curves. Simulations were performed integrating lim...

We present a method that employs the secondary eclipse light curves of transiting extrasolar planets to probe the spatial variation of their thermal emission. This technique permits an observer to resolve the surface of the planet without the need to spatially resolve its central star. We evaluate the feasibility of this technique for the HD 209458 system by first calculating the secondary ecli...

Something is about to happen in Nashville, Tennessee, that has not happened since Andrew Johnson was president of the United States in 1865. The time before that was Christmas Day 1628: the year Charles I of England granted a land charter to the Massachusetts Bay Colony. And the next occurrence will not take place until August 2566, some 549 years hence. You get the picture! On Monday, August 2...