Astronomy & Observing News

Seeking the Origins of Cosmic Rays

Where do cosmic rays come from? Although they were first identified on a balloon flight in 1912, their sources have been hard to find. But recently a slight, unexplained excess of cosmic rays — only 0.1% above the sky average — was identified coming from the direction of Cygnus.

Celestial News & Events

Watching Comet Tempel 1 — and Deep Impact

Glowing at 10th magnitude in the evening sky, the target of the Deep Impact mission awaits viewing with a medium-size telescope. Use our charts to find it.

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