- America's First Man in Space: The 15-minute flight of Alan Shepard
- America's First Earth Orbit: John Glenn and his near miss
- Apollo 13: NASA's successful recovery of a potentially doomed space mission
- Cassini-Huygens: Mission to Saturn
- Challenger Explosion: The cause, and story, of the disaster
- Columbia Disaster: The story of the explosion, including a NASA video depicting a simulated study of foam blowing a 16-inch hole into a shuttle wing.
- Comets: Description and video - (see first paragraph)
- Comets: Execution of a "deep impact" encounter with the Tempel 1 comet - (see paragraphs six to end of the chapter for photos and animations)
- Crab Nebula: Background information and astonishing pictures - (see paragraphs four and five)
- First Man and Woman in Space: The Russians did it
- First Rockets: Robert Goddard's amazing work
- Gagarin, Yuri: Hero of the Soviet Union - first man in space
- Galileo: From math professor to space observer
- Galileo's Telescope: Take a virtual visit to the History of Science Museum in Florence, Italy - (see links in the second paragraph of chapter 1)
- Galileo's Words to the Inquisitors: "And yet it moves" - (see last paragraph)
- Halley's Comet: Halley and "his comet" - (see third paragraph from the bottom)
- History of Flight - Highlights of 100 years of powered flight
- Hubble, Edwin: Namesake of the Hubble Telescope, an Earth-orbiting observatory
- Hubble Telescope: Description of, and pictures from
- Hubble's Cameras: What they are and how they work
- Hubble's Filters: How they work - (see fourth and fifth paragraphs)
- Hubble's Glasses: Correcting the space telescope's "blurred vision" - (see last two paragraphs)
- James Webb - Space Telescope: Slated to replace the Hubble telescope - (see second-to-last paragraph)
- Kitty Hawk: The first flight
- Leonov, Aleksei: First person to "walk" in space
- Light: What is visible, and invisible, light?
- Lipperhey, Hans: Inventor of the telescope
- "M" Designations: What are they?
- Mars: Exploring the red planet with NASA videos, animations and images
- Mars - "Opportunity" Rover: Images and animations of the Mars explorer Opportunity - (see paragraphs five to end of chapter for recreations and animations)
- Mars - Reconnaissance Orbiter: Pictures, video and animation about the Mars orbiter - (see second-to-last paragraph)
- Mars - "Spirit" Rover: Images and animations of the Mars explorer Spirit - (see paragraphs five to end of chapter for recreations and animations)
- Mercury 7: America's first astronauts
- Moon Landing: President Kennedy's dream - to send a man to the moon within a decade - is realized
- Nebulae: Types and awesome images
- Oberth, Hermann: Evisioned the concept of rocket-powered flight and a space telescope
- Saturn: Images from Galileo to the present
- Saturn - Its Rings and Moons: Take a closer look in the fifth paragraph
- Sound Barrier: Broken for the first time in 1947
- Space Pictures: Why are they in color? What process does NASA use to make that happen?
- Space Race: America falls behind, then catches up
- Spitzer, Lyman: Lobbied NASA and the U.S. Congress for creation, and deployment, of Hubble space telescope - (see third paragraph)
- Spitzer Space Telescope: Infrared space telescope - (see second-to-last paragraph)
- Tereshkova, Valentina: First woman in space
- Titan - Saturn's Largest Moon: Take a look in the fifth paragraph
- White, Ed: First American space walker
- Wright Brothers: "Before the Wright Brothers, no one in aviation did anything fundamentally right. Since the Wright Brothers, no one has done anything fundamentally different."