Âé¶¹´«Ã½

Star turn

By Eugenie Samuel

2 March 2002

Boston

RECREATING an exploding star in your lab sounds impossible, not to mention
foolhardy. But that’s what Bruce Remington of Lawrence Livermore National
Laboratory in California has done in a bid to understand the biggest shockwaves
in the Universe.

When a huge star runs out of fuel and collapses, its core rebounds outwards
in a huge explosion called a supernova. The edge of the explosion is marked by a
shockwave, where the debris is moving faster than the speed of sound. On Earth,
shockwaves travel spherically out from an explosion. But astronomers see sinewy
fingers of debris spreading out from…

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