Houston Williams was thrilled to win a scholarship to attend a space program at NASA. What he didn’t realize was that organizers were recruiting people for a cutting-edge research project aimed at studying how space travel affects people of different ages. Now, after months of intense training, Houston is blasting off into space! He and his new friend and former rival, Ashley, are on their way to the International Space Station (ISS) where, along with veteran astronaut Colonel Sanderson, they will be subjected to a variety of experiments. Meanwhile, back on Earth, the politics of space travel are getting complicated. Many feel the money being spent on Mars exploration should be redirected to address issues such as access to clean water and global warming. A planned mission to Mars may be accelerated before funding is canceled, and there is talk of repurposing the ISS crew. Houston doesn't dare say out loud what he's thinking: This is the second book in the Teen Astronauts series, following The epub edition of this title is fully accessible.