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Hubble Sees a Star About to Ignite

This is an image of the FS Tau multi-star system taken by the Hubble Space Telescope. The bright object at the nebula's heart is FS Tau A, a newly ignited T Tauri star, but its companion on the right side, FS Tau B, hasn't ignited yet. It's still in the process of collapsing and heating up, releasing heat from the gravitational collapse. The Harbig-Haro protostar releases jets of fast-moving energized material, visible as the blue material stretching across the nebula.

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