[PAR] [TLE] WASP-17b [SEP] WASP-17b is an exoplanet in the constellation Scorpius that is orbiting the star WASP-17.  Its discovery was announced on 11 August 2009.  It is the first planet discovered to have a retrograde orbit, meaning it orbits in a direction counter to the rotation of its host star.  This discovery challenged traditional planetary formation theory.  In terms of diameter, WASP-17b is the second-largest exoplanet discovered yet, and at half Jupiter's mass, this makes it the most puffy planet known.  On 3 December 2013, scientists working with the Hubble Space Telescope reported detecting water in the atmosphere of the exoplanet. [PAR] [TLE] Scorpius [SEP] Scorpius is one of the constellations of the zodiac.  Its name is Latin for scorpion, and its symbol is (Unicode ♏).  Scorpius is one of the 48 constellations identified by the Greek astronomer Ptolemy in the second century.  It is an ancient constellation that pre-dated the Greeks.  It lies between Libra to the west and Sagittarius to the east.  It is a large constellation located in the southern hemisphere near the center of the Milky Way.
[PAR] [TLE] WASP-17b [ SEP ] WASP-17b is an exoplanet in the constellation Scorpius that is orbiting the star WASP-17 . Its discovery was announced on 11 August 2009 . It is the first planet discovered to have a retrograde orbit , meaning it orbits in a direction counter to the rotation of its host star . This discovery challenged traditional planetary formation theory . In terms of diameter , WASP-17b is the second - largest exoplanet discovered yet , and at half Jupiter 's mass , this makes it the most puffy planet known . On 3 December 2013 , scientists working with the Hubble Space Telescope reported detecting water in the atmosphere of the exoplanet . [PAR] [TLE] Scorpius [ SEP ] Scorpius is one of the constellations of the zodiac . Its name is Latin for scorpion , and its symbol is ( Unicode ♏ ) . Scorpius is one of the 48 constellations identified by the Greek astronomer Ptolemy in the second century . It is an ancient constellation that pre - dated the Greeks . It lies between Libra to the west and Sagittarius to the east . It is a large constellation located in the southern hemisphere near the center of the Milky Way .
WASP-17b is located in a constellation identified by which astronomer?
WASP-17b is located in a constellation identified by which astronomer ?
identified by the Greek astronomer Ptolemy
identified by the Greek astronomer Ptolemy