There are 3 books in the NASA Trilogy series. The newest book is Moonseed which came out in 1998.

1
Voyage

Voyage

What if John F. Kennedy survived?

President Nixon, with the help of former president JFK, has just green-lit NASA's first manned expedition to Mars.

Aboard, Natalie York, a geologist who risks everything she loves for the chance to go to space; Phil Stone, former X-15 test pilot; and Ralph Gershon,…

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2
Titan

Titan

Signs of life have been found on Titan, Saturn's largest moon.

A group of visionaries led by NASA's Paula Benacerraf plan a daring one-way mission that will cost them everything. Taking nearly a decade, the billion-mile voyage includes a 'slingshot' transit of Venus, a catastrophic solar storm, and a constant…

3
Moonseed

Book cover of Moonseed

Venus has exploded.

Showering Earth with radiation and bizarre particles that wipe out all the crops and half the life in the oceans.

Suddenly, the ground itself begins melting into pools of dust that grow larger every day. For what has demolished Venus, and now threatens Earth itself, is part…