Scientists identify planets on a daily basis using a combination of the transit method, the radial-velocity method, direct Imaging or gravitational microlensing.

科学家们几乎每天都在发现它们。主要是通过几种不同的观测方法，包括凌星法、视向速度法、直接观测法或微引力透镜法。

Finally there is a proposed method called  microlensing which has been seen many times for stars, but not as far as we know for black holes.

最后，有一种称为微透镜的提议方法， 这种方法已在恒星中多次出现，但据我们所知， 在黑洞中尚不常见。