Azteca -The Gran Telescopio Millimeter “Alfonso Serrano”on the summit of Sierra Negra in Puebla for five consecutive nights has measured a black hole at the center of the Milky Way.
Azteca -The Gran Telescopio Millimeter “Alfonso Serrano”on the summit of Sierra Negra in Puebla for five consecutive nights has measured a black hole at the center of the Milky Way.