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Why are interstellar absorption lines so narrow compared to the width of lines which originate in the photospheres of stars
Sales Promotion
Marketing strategies aimed at increasing sales in the short term through incentives such as discounts, coupons, or special offers.
Nonpersonal Communication
Refers to messages broadcasted to the general public through various media channels without personalized targeting.
Informative
Pertaining to or providing information; educational or enlightening.
Advertising
The activity of producing and placing promotional materials in various media channels to communicate to the public about products, services, or brands.
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