The underlined appositive phrase in the sentence is “a Swedish astronomer”
Answer:
Samantha Bernard
Step-by-step explanation:
An appositive phrase is a noun, a pronoun, or a phrase that renames, identifies, or gives further information of another noun placed right beside it. In the sentence provided, “a Swedish astronomer” renames and gives us more information about the noun “Samantha Bernard.” Also, this appositive phrase is restrictive because it is not essential to the sentence (the sentence would still make sense without the appositive).