periodic comet sentence - periodic comet sentence in Hindi (21-30)

	21.	He studied comets, and discovered the periodic comet 4P / Faye on 22 November 1843.
	22.	She co-discovered the periodic comet 61P / Shajn Schaldach.
	23.	In 1933, he discovered the periodic comet 36P / Whipple and the asteroid 1252 Celestia.
	24.	He also discovered two periodic comets : 171P / Spahr and P / 1998 U4.
	25.	Ikeya discovered the periodic comet 153P / Ikeya-Zhang on February 1, 2002 in Mori, HokkaidM.
	26.	He observed the bright comet of the 1860 and two years later discovered a periodic comet.
	27.	He discovered the periodic comet 37P / Forbes.
	28.	Periodic comet 153P / Ikeya-Zhang is discovered by his self-made telescope on Feb . 1st 2002.
	29.	A number of periodic comets discovered in earlier decades or previous centuries are now lost comets.
	30.	Abell also co-discovered periodic comet 52P / Harrington-Abell.

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