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Glossary term: فام‌سپهر

Also known as کروموسفر

Description: فام‌سپهر (یا "رنگین سپهر") خورشید یا دیگر ستاره های خورشید مانند،لایه گازی نازکی از هواسپهر (جو) که مستقیماً در بالای نورسپهر قرار دارد، که لایه متراکم تری است و نور خورشید یا نور ستاره از آن ساطع می شود.
در طی یک خورشید گرفتگی کامل، فام‌سپهر به صورت یک حلقه ضعیف از گازهای درخشان قابل مشاهده است، که عمدتاً هیدروژن است که با رنگ قرمز می درخشد، از این رو این را گرفته است.

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".