ask chris

Nathan [left] asks Chris a question about physics.

Would you pose a physics question to this man? [The one on the right, that is.]

Believe it or not, people at Caltech have done so on countless occasions. Chris Hirata, a graduate student at Princeton University, is the resident Yuri's Night answer man. So far he's got the following fun toys:

• 12 April 2001: Jupiter and Saturn are at conjunction
• 12 April 2001: A Progress cargo vehicle is launched to the International Space Station
• 12 April 2001: Nine photons set out from the Sun. This is their story.
• Now: Where are the world's favourite satellites right now?

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