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How to make yourself a star

发布时间:2019-03-14 08:17:01来源:未知点击:

By Stuart Clark Video: World’s most powerful laser assembled Watch a video of a megalaser being assembled ASTRONOMY. It may be the venerable grandaddy of science, but over the last century it has been reduced to the poor relation of every other branch of modern science. That’s because it is missing one of the foundation stones on which to build its house of knowledge. It has observation and theory in spades but, unlike most other scientific disciplines, it lacks experiment. No one can bench-test the formation of the gas giant Jupiter or nip out the back and explode a star to see if their ideas are correct. No, we have simply had to make do with what the universe throws at us. Until now, that is. We have at last found a way to bring the universe inside the laboratory. Home-made stars and planets are allowing our various ideas and assumptions about celestial objects to be put to the test in unprecedented ways. Not only do the measurements have the power to resolve arguments in astrophysics that have raged for decades, they could also finally reveal how solar systems form and the innermost secrets of stars. So just how do you recreate stars and planets in the lab? The answer is lasers. Really, really big ones. Scattered around the world are about a dozen megalasers, each one housed in its own warehouse-sized building. Using the energy created by these megalasers,