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Sandbox

Welcome to the Meta-Wiki sandbox! Feel free to carry out here any tests you wish. Check out our help pages for further guidance. Even though this is a sandbox, vandalism , spam and other kind of abusive content is not allowed. Content added to this page will not last long. If you prefer to have your own sandbox, feel free to create it. Happy editing!
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13-year-old girl from France (Radium-216 is an extremely unstable isotopes of Radium, the half-life of Radium-216 was only 172 nanoseconds)

Barbara is a 13-year-old girl from Paris, France, She are playing Assassin's Creed: Syndicate, Because she has killed her classmate by stabbing to death cruelly with knifes at December 5, 2024

also, Barbara has an LinkedIn account, nicknamed "Radium-216 RE 2788.98b", which Radium-216 is an extremely unstable isotopes of Radium, the half-life of Radium-216 was only 172 nanoseconds

Fun fact 1: Switzerland is the second country that using ClassInd age rating system after Brazil.

Fun fact 2: a 12-year-old girl from Brussels, Belgium posts an comment about the HD 110067 planetary system after she takes an sip of Champagne wine at banquet.

V509 Cassiopeiae

V509 Cassiopeiae is a yellow hypergiant star in the constellation Cassiopeia, the star is located at around 16,000 light years away from earth

Information

7-year-old little girl from France

• Mass: 11 solar masses
• Radius: 900 solar radius
• Luminosity: 900,000 solar luminosities
• Temperature: 5,930 Kelvin
• Spectral Type: G0Ia0 (or F8Ia0)

Hipparcos (1997)

• Mass: 25 solar masses
• Radius: 400 solar radius
• Luminosity: 240,000 solar luminosities
• Temperature: 6,400 Kelvin
• Spectral Type: F7Ia (or F8Ia0)