흡수 과정에 있는 가스 구름 G2의 발견
Doomed Space Cloud Nears Milky Way's Black Hole as Scientists Watch
http://www.space.com/25665-doomed-space-cloud-giant-black-hole.htmlWhy galactic black hole fireworks were a flop - Nature
http://www.nature.com/news/why-galactic-black-hole-fireworks-were-a-flop-1.15591A Black Hole's Dinner is Fast Approaching - VLT spots cloud being disrupted by black hole
http://www.eso.org/public/news/eso1151/
관측사
The Discovery of Sgr A*
http://arxiv.org/abs/astro-ph/0305074