Starting with the first sentence: "During the 2015 Jupiter Ascending event, astrologers predicted that the planet’s energies would bring about positive changes, opportunities, and challenges..."

3. "This spectacular event happened on July 7, 2015, and was a once-in-a-lifetime opportunity for stargazers to witness the majesty of Jupiter up close."

Now the second part about astrological significance: "In astrology, Jupiter is considered a beneficent planet, associated with expansion, growth, and good fortune." "Beneficent" => "favorable|benevolent|auspicious". "Planet" is a proper noun. "Associated with expansion, growth, and good fortune" => "linked to progress, development, and positive outcomes|connected to expansion, enhancement, and prosperous times|related to growth, advancement, and luck".

That looks good. Now the second sentence:

"As we prepare for the horizon, we can look forward to more spectacular celestial events, each offering a chance to deepen our knowledge of the universe and our place within it."

Given that, let's proceed. The input text includes words like "orbit," "sun," "planet," "constellations," "ascending," "opposition," etc. The names like Jupiter, Sun, Earth should be left as is. Let's pick "opposition" as the target word and provide three synonyms. Since "opposition" in astronomy is a specific term, maybe there are related terms. For example: