1. Visit science.nasa.gov/ for more.

    Astronomers no longer have any doubt: Our Milky Way Galaxy will have a head-on collision with Andromeda. Fortunately, they say, Earth will survive when the two great star systems meet 4 billions years from now.

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    High above Earth, astronaut Don Pettit is about to become the first human to witness and photograph a transit of Venus from space. His images and commentary will be streamed to Earth during the crossing.

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  3. Visit science.nasa.gov/ for more.

    On Monday, June 4th, the Moon will pass through the shadow of Earth, producing a partial lunar eclipse visible across the Pacific from China to the United States.

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  4. Visit science.nasa.gov/ for more.

    It won't happen again until December 2117. On June 5th, 2012, Venus will transit the face of the sun in an event of both historical and observational importance. The best places to watch are in the south Pacific, but travel is not required. The event will also be visible around sunset from the USA.

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  5. Visit science.nasa.gov/ for more.

    Superficially, Saturn's moon Phoebe doesn't look much like a planet, but on the inside, the little gray moon has a lot in common with worlds like Earth.

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ScienceCasts are short videos about fun, interesting, and unusual science topics encountered by NASA’s science missions.

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