What does YSO stand for?

Young Stellar Object

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

Other Resources:

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Yale School of Nursing Yamaguchi Information Super Network (Japan) Young Scientists Network (National Center for Earth-Surface Dynamics; University of Minnesota) Youth Services Network (Kettering, OH, USA) Youth Solidarity Network (US and Palestine) Youth Sports Network Youth Soccer of New Rochelle (New York) Yale Symphony Orchestra Ylivieskan Sosiaalialan Oppilaitos (Finnish: Ylivieska Social Institution; Ylivieska, Finland) York Symphony Pops Orchestra		Youngstown Symphony Orchestra (Youngstown, OH) Youth Sector Organisation (Singapore) Youth Soccer Organization (various organizations) Yttrium Oxyorthosilicate Yale School of Architecture You Son of A Bitch You Son Of a Bitch Yamaha Scooter Owner Club Yield Supplement Overcollateralization Youth Services for Oklahoma County (est. 1972; Oklahoma City, OK)

Samples in periodicals archive:

For example, the subtitle is "The Eagle's EGGs: Not so fertile," yet the stated conclusion of the recent work is that more of the Eagle's EGGs contain young stellar objects than might have been expected.

Star-making machinery. (Letters)

I'll admit that my original guess was that a larger fraction of the EGGs would contain young stellar objects," Hester says.

Rethinking an astronomical icon: the Eagle's EGGs: not so fertile

Images of young stellar objects in these regions reveal that many are still embedded within their birth clouds.

Bullies of the universe: massive stars rob their smaller neighbors