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  Question After exploring outer space

  • Started by 550W（sky·忆）
  • 48 minutes ago
  • Replies: 6

  Our Solar System
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  Flatlander 3D: Hypersphere to Flat Space

  • Started by Gibsense
  • Jun 5, 2024
  • Replies: 127

  Cosmology
• A

  Universal Motion Theory

  • Started by Astraeus
  • Friday at 8:02 PM
  • Replies: 33

  Cosmology
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  Rare 'cannibal' solar eruption sparks severe geomagnetic storm, triggers stunning auroras (photos)

  • Started by Admin
  • Today at 7:40 AM
  • Replies: 0

  Article Commentary
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  Question BIG BANG EVIDENCE

  • Started by Harry Costas
  • May 4, 2022
  • Replies: 280

  Astronomy
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  Where to see the Lyrid meteor shower 2025: Top viewing tips

  • Started by Admin
  • Today at 6:00 AM
  • Replies: 0

  Article Commentary
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  Planetary defense is knowing what's out there and what could do harm to us.' Meet the scientist who helped build NASA's asteroid response plan

  • Started by Admin
  • Yesterday at 10:00 AM
  • Replies: 0

  Article Commentary