Âé¶¹´«Ã½

A planet is born

By Jeff Hecht

29 June 2002

THE birth of a planet has been caught on camera. The infant planet, circling a young star the size of our Sun, hasn’t settled into a steady orbit yet and astronomers think they can see it migrating inwards towards its parent star.

Before a planet can form, dust and rocks surrounding a star start to collect in a flat orbiting disc. Astronomers believe planets appear when gravitational attraction starts to make parts of the disc clump together and move in towards the star. But no one knows exactly how this happens or how long it takes.

Now observations of a…

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