Is iShares' ITA or Tema's NASA the Better Aerospace ETF?

The iShares U.S. Aerospace & Defense ETF (ITA) and Tema Space Innovators ETF (NASA) represent two different aerospace investment approaches. ITA focuses on traditional defense and aviation with established companies, lower costs (0.38% expense ratio), higher liquidity ($14.7B AUM), and a 33% one-year return. NASA targets the emerging space economy with higher growth potential but greater volatility, a higher expense ratio (0.75%), and only months of trading history since its March 2026 launch. ITA suits conservative, income-oriented investors, while NASA appeals to those seeking speculative space sector exposure.