Learn Icelandic: Við munum finna nýja reikistjörnu.

While the present tense is very commonly used to express the future in Icelandic (Við finnum usually means both We find and We will find), adding the auxiliary verb munu adds a strong sense of certainty or deduction. Við munum finna means you are making a highly confident prediction: We will find.

Does munu ever take að before the next verb?

No, it never takes að. Just like the word 'will' in English (we will find, not 'we will to find'), munu is always followed directly by the bare infinitive of the main verb, which is finna in this sentence.

Why are the words nýja reikistjörnu in the accusative case?

They form the direct object of the verb finna (to find). Because reikistjarna (planet) is a feminine noun, its accusative singular form is reikistjörnu. The adjective nýr (new) must change to its feminine accusative form, nýja, to agree with the noun.

Reikistjarna is a long word! What is its literal meaning?

It is a compound word that literally translates to 'wandering star'. It combines reiki (wandering or strolling) and stjarna (star). This is actually identical to the ancient Greek origin of the English word 'planet', describing how planets appear to wander across the sky compared to fixed stars!