[1] Most of the exoplanets currently known were discovered using indirect techniques - such as radial velocity variations of the host star, or the dip in brightness of the star caused by a transiting exoplanet. Only a few exoplanets have so far been directly imaged (eso0515, eso0842).

[2] A further, but simpler trick employed by SPHERE is to take many pictures of an object, but with a significant rotation of the image in between each. Features in the pictures that rotate are artefacts of the imaging process, and features that stay in the same place are real objects in the sky.

See for more information and photos the original press release on: