พลาสมา, พลังงาน, เบา, เรืองแสง, อำนาจ, สดใส, ที่เร่าร้อน, พลังงานสีฟ้า
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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