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Ali A.
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The ultimate battle of fire and ice! Who will win, the sun or Comet #ISON

Join #NASA as we follow the journey of Comet ISON as it slingshots around the sun. 

Will the awesome gravity and energy of the sun break up this cosmic ball of ice and rock? Will it break up? Or will it pass the sun intact to put on a dazzling show in the December sky? 

Watch as NASA solar physicists track the comet LIVE from the mission control for NASA’s Solar Dynamics Observatory,@NASA_SDO, during #ISON’s closest approach to the sun. 

We'll also be joined by comet scientists joining from Kitt Peak Observatory in Arizona, where the solar telescope will be observing ISON and by science writer Phil Plait.

NASA scientists will answer your questions LIVE on air here on Google+, in the YouTube comments section during the live broadcast, or via Twitter using #ISON and #askNASA.

The participants in this Hangout include:

• C. Alex Young, Solar Physicist, Associate Director for Science in the Heliophysics Science Division and co-founder of The Sun Today - NASA's Goddard Space Flight Center, Greenbelt, Md.,

• W. Dean Pesnell, Solar Physicist and Project Scientist for the Solar Dynamics Observatory - NASA's Goddard Space Flight Center, Greenbelt, Md.,

• Karl Battams, Comet Scientist for the Naval Research Laboratory, Washington, DC, and solar spacecraft lead for NASA's Comet ISON Observing Campaign, joining from Kitt Peak Observatory in Arizona, where the solar telescope will be observing ISON. 

• Phil Plait, writes Slate's 'Bad Astronomy' blog and is an astronomer, science evangelizer, and author of the books "Bad Astronomy" and "Death from the Skies!"

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Seven years ago former Vice President Al Gore released An Inconvenient Truth, kick-starting a global conversation about climate change (available on Google Play: http://goo.gl/ElYcc). The issue is as pressing as ever and Gore and Jeff Skoll, the film's executive producer, want to hear your ideas (http://youtu.be/ih3fEHv4wqA). 

Throughout the coming week add your thoughts and questions in the Science on G+ Community (http://goo.gl/39w5t). Gore and Skoll will choose the most insightful participants to join them in a live Hangout on Air on June 11th at 2PM EST - come back then to tune in to the Conversation! 

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