Cosmos - 2023-12-14

• Call & return
• From the Editors
• “Bonus sample” in OSIRIS-REX canister
• Malaysian cave art tells a violent story
• Scientists find high killer T-cell response in critical COVID-19 cases
• Size matters: Quantum dots take prize
• Hot Jupiter-like exoplanet expels a spiral cloud of helium
• Ancient tree rings reveal largest ever solar storm 14,300 years ago
• Why we won’t have a super El Niño this year
• First recorded total failure of emperor penguin breeding colonies
• MIND THE GAP

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