Astronomy

Clues in this puzzle

Across

• Poetic term for a celestial sphere (3)
• Yellow dwarf at the center of our neighborhood (3)
• Interstellar cloud of dust and gas often birthing new suns (6)
• World discovered orbiting a star beyond our own system (9)
• Dirty snowball with a pair of glowing tails (5)
• Runaway greenhouse world blanketed in acid clouds (5)
• Rusty neighbor hosting Olympus Mons (4)

Down

• Sudden stellar outburst from a white dwarf system (4)
• Encircling band of icy debris, as around Saturn (4)
• Kuiper belt dweller famously reclassified in 2006 (5)
• Optical or radio instrument that reveals distant cosmos (9)
• Cataclysmic explosion marking the demise of a massive star (9)
• Gravitationally bound metropolis of stars, gas, and dark matter (6)
• Imaginary line about which a celestial body spins (4)

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