methods of detecting extrasolar planets造句

Methods of detecting extrasolar planets work for brown dwarfs as well, although brown dwarfs are much easier to detect.
Comparing this method of detecting extrasolar planets with other techniques such as the transit method, one advantage is that the intensity of the planetary deviation does not depend on the planet mass as strongly as effects in other techniques do.
It's difficult to find methods of detecting extrasolar planets in a sentence. 用methods of detecting extrasolar planets造句挺难的