Year of the Comet
Comet C/2011 L4 (PANSTARRS)

PANSTARRS information

Comet C/2012 S1 (ISON)

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Web Extras

Cosmology's telescopes

To answer big questions, scientists need to think big about their observing tools.
By Liz Kruesi
Published: May 22, 2006
Over the next decade, scientists will make observations to learn more about cosmology's biggest mystery: the nature of dark energy. A slew of telescopes are in the planning or construction stages to aid in this effort.
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