3 ms·
You can measure the position of the star in the sky and use that to detect systems that are "face on" to us (with the axis pointing at us) but it's harder. htt
by roywiggins 9y ago
You can measure the position of the star in the sky and use that to detect systems that are "face on" to us (with the axis pointing at us) but it's harder.
http://www.planetary.org/explore/space-topics/exoplanets/astrometry.html http://www.planetary.org/explore/space-topics/exoplanets/ast...
- martinpw 9y agoSounds like 'harder' is an understatement - according to that article no planets have been discovered with this technique, and it is unlikely to yield any discoveries any time soon. (Technique is to directly observe the star wobbling in space rather than measure doppler shifts.)