Elon Musk, the world's wealthiest person and CEO of multiple companies including Tesla and SpaceX, secretly welcomed twins in November 2021 with Shivon Zilis, a top executive at his company Neuralink. The news brings Musk's known number of children to nine.

Key Points:

• Musk (51) and Zilis (36) filed to give the twins his last name and include her last name in their middle names
• The twins were born weeks before Musk's second child with musician Grimes
• Zilis is the director of operations at Neuralink and has worked at several Musk companies
• She is a Yale graduate and recognized expert in machine learning and AI

Professional Background:

• Zilis joined Musk's network through OpenAI in 2015
• She has held positions at Tesla and Neuralink
• She was named to Forbes' 30 Under 30 in venture capital
• She shares Musk's interests in AI, space travel, and transportation

Context:

Musk has been vocal about population decline concerns, viewing it as a significant threat to humanity. He has repeatedly emphasized the importance of maintaining birth rates and has tweeted that he's "doing his part." This aligns with his stated mission of making humans a "multi-planetary species" and his goal of populating Mars through SpaceX's initiatives.

The revelation comes amid other significant events in Musk's life, including his pending Twitter acquisition and recent public statements about population demographics and parenting.