untethered astronaut

The Mercury 13 - by Martha Ackmann (Paperback)

The Biggest Ideas in the Universe - by Sean Carroll (Hardcover)

Powered Flight - by David R Greatrix (Hardcover)

Picturing Apollo 11 - by J L Pickering & John Bisney (Hardcover)

The Big Picture - by Sean Carroll (Paperback)

FTCE Earth/Space Science 6-12 Secrets Study Guide - by Mometrix Florida Teacher Certification Test Team (Paperback)

The Inventor's Complete Handbook - by James L Cairns (Paperback)

Visual Learning: Physics - (Barron's Visual Learning) by Kurt Baker (Paperback)

The Real Science Behind the X-Files - by Anne Simon (Paperback)

Chemtrails, HAARP, and the Full Spectrum Dominance of Planet Earth - by Elana Freeland (Paperback)

Rockets - (Dover Books on Aeronautical Engineering) by Robert Hutchings Goddard & Robert Goddard & Engineering (Paperback)

The Ups and Downs of Physics - by Judith Weber & Marcus Weber (Hardcover)

How Transistor Area Shrank by 1 Million Fold - by Howard Tigelaar

Guidance Note 7: Special Locations - (Electrical Regulations) 8th Edition by The Institution of Engineering and Technology (Paperback)

Rarefied Gas Dynamics - (Springer Aerospace Technology) by Martin Grabe & Georgii Oblapenko & Manuel Torrilhon (Hardcover)

Becoming Martian - by Scott Solomon (Hardcover)

The Giant Leap - by Caleb Scharf (Hardcover)

Secrets of Antigravity Propulsion - by Paul A LaViolette (Paperback)

Observer's Sky Atlas - 4th Edition by Erich Karkoschka (Hardcover)

If the Universe Is Teeming with Aliens ... Where Is Everybody? - (Science and Fiction) 2nd Edition by Stephen Webb (Paperback)

Undeniable - by Bill Nye (Paperback)

Introduction to Orbital Perturbations - (Space Technology Library) by James M Longuski & Felix R Hoots & George E Pollock IV (Hardcover)

Experiments With Alternate Currents Of High Potential And High Frequency - by Nikola Tesla