Or, you could decide that this claim seems astonishing, do a Bing search to expand your knowledge, and come across an article that discusses (with facts and measurements!) that Sagitarius A is far enough away that detecting lensing is just beyond our current optical limits. Additionally, it looks like we’ve seen something indicating a shift in brightness as it approaches what we postulate to be a black hole, and which could be lensing. We’ll soon know for sure!
http://iopscience.iop.org/0004-637X/696/1/701/fulltext/apj_696_1_701.text.html
5 Likes
