Write a paper on how the U.S. manned spacecraft engineers decided on the blunt shape for the Mercury, Gemini, and Apollo capsules. What other alternatives exist for the safe re-entry of humans? What are the primary issues?

Spacecraft engineers

Write a paper on how the U.S. manned spacecraft engineers decided on the blunt shape for the Mercury, Gemini, and Apollo capsules. What other alternatives exist for the safe re-entry of humans? What are the primary issues?