...the central hot star, O Herschel 36 (shown here on left, red), is the primary source of the ionising radiation for the brightest region in the nebula, called the 'Hourglass'. Other hot stars, also present in the nebula, are ionising the outer visible parts of the nebulous material.for the whole story... | Of course, the saddest part, is that this image was captured almost 10 years ago; it's the wealth of data that it's collected that has kept us from seeing it until now | So far, the Hubble is still slated to cease operation in 2010 | We need some science-for-science-sake folks running the fiscal dog + pony show |
This ionising radiation heats up and 'evaporates' the surfaces of the clouds (seen as a blue 'mist' at the right of the image), and drives violent stellar winds which tear into the cool clouds |