... Астронет | ... планета Астронет | ... A Sagittarius Triplet . ... Credit Copyright: Martin Pugh Explanation: These three bright nebulae are often featured in telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way . In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula left of center, and colorful M20 on the right. The third, NGC 6559 , is above M8, separated from the larger nebula by a dark dust lane. ...