... Hydrogen Shadows in the Galactic Sky. ... Fortunately, cold H I can appear as H I self-absorption (HISA) shadows against warmer background H I . ...
... Swan and Shadow. ... O so gray then What A pale signal will appear When Soon before its shadow fades Where Here in this pool of opened eye In us No ...
... A skiagram is an image made up of shadows or outlines. ... interstellar medium can only be studied skiagraphically as I self-absorption (HISA) shadows against background I 21cm emission ...
... A skiagram is an image made up of shadows or outlines. ... medium can only be studied skiagraphically as H I self-absorption ( HISA ) shadows against background H I 21cm emission ...
... Introduction A skiagram is an image made up of shadows or outlines. ... medium can only be studied skiagraph- ically as H i self-absorption (HISA) shadows against background H i 21cm emission ...
... and other frozen volatile materials within its permanently shadowed polar craters ... Mercury's north and south poles lie within shadowed regions on the planet's surface ...
... and mapping of deposits of volatiles on the shadowed floors of impact craters at the ... bright arcs away from the poles coincide with the shadowed areas for these craters ...
... at the poles of Mercury triggered a search for ice in the shadowed floors of craters near the lunar poles as part of Cornell ... coordinates of the south pole region of the Moon was made at Arecibo in a search for ice in permanently shadowed areas ...