Space

Uranus is the seventh planet from the sun and sits on an axial plane tilted at a jaw-dropping 97.7-degree angle. And yes, Uranus does actually stink.

By Mark Mancini

The atmospheric pressure is crushingly extreme on Venus, and lead would melt into a puddle on its surface. But as hellish as this place sounds, it actually has a lot in common with Earth.

By Mark Mancini

Saturn is the sixth planet from the sun and the second-largest planet in the solar system. This gas giant has more rings and moons than any other planet.

By Mark Mancini

Some of the most interesting objects in our solar system are also the smallest or largest. In addition to the sun, planets, and moons, our solar system has a variety of small objects such as asteroids, comets, stars, meteors, and moons. These have affected what has happened on Earth in many ways.

NASA needs a vehicle capable of carrying crew and payloads to Earth orbit, the moon and Mars. Learn about the technologies of the new Crew Exploration Vehicle and find out how it will help us explore the moon and beyond.

By Craig Freudenrich, Ph.D.

It's launch time for the first privately funded space flight. In the course of battle for the X Prize, a group called Scaled Composites has built and tested SpaceShipOne, a sub-orbital spacecraft intended to carry tourists on the ride of their life. Learn all about the craft.

By Robert Valdes

Even though it's tiny compared to the rest of the universe, Earth is a complex planet that, so far, is the only one we know of that sustains life.

By Kathryn Whitbourne & Mark Mancini

Thousands of satellites fly overhead every day, helping us with things like weather forecasts, scientific research, communications, TV broadcasts (and maybe some surreptitious spying). How much do you know about these eyes in the sky?

By Gary Brown & William Harris

Pluto is relatively round and orbits the Sun. So, why doesn't it qualify as a planet?

By Patrick J. Kiger & Kathryn Whitbourne

It's safe to assume there won't be a moon colony any time soon. But it's still a tantalizing thought. But wouldn't it be cool to be able to live, vacation and work on the moon?

By Marshall Brain

Because an Earth-like environment is created within a spacesuit, it allows you to walk around in space in relative safety. But outer space is an extremely hostile place and could kill you if you aren't protected.

By Marshall Brain

If you spent a year on Mars, you would need to take more food and water than you could possibly carry. But if you had to go, how much would be enough?

By Marshall Brain

People around the world watched as Neil Armstrong touched the moon and declared, "That's one small step for man; one giant leap for mankind." But how did we put a man on the moon?

By Stephanie Watson

Spring Heeled Jack is a legendary English character. He was a mysterious a Victorian-era murderer, leaping from rooftop to rooftop, leaving a trail of tragedy in his wake. Read why some think Spring Heeled Jack may have been an alien humanoid.

By the Editors of Publications International, Ltd.

The Oz Factor is a sensation that UFO witnesses experience. Learn where the term "Oz Factor" came from, and what the experience is like.

By the Editors of Publications International, Ltd.

In 1897 Alexander Hamilton reported a cow abduction by a UFO that appeared at his farm in Kansas. How did he fool people for half a century, and even get the made-up story in the newspaper?

By the Editors of Publications International, Ltd.

Richard Sharpe Shaver was a controversial UFO storyteller promoted by magazine editor Ray Palmer in the 1940s. Shave wrote amazing stories about aliens called deros and teros. Some called him a crackpot; some called him a prophet.

By the Editors of Publications International, Ltd.

Bob Lazar claimed to have worked in the S-4 section of Area 51. On that top-secret Nevada research base, he claimed to see anti-gravity reactors and flying saucers in person. How truthful were his extravagant tales?

By the Editors of Publications International, Ltd.

George Adamski preached an interplanetary gospel based on contact with UFOs and aliens. Though serious investigators scoffed, he earned wide attention. Read about George Adamski and his "Space Brothers."

By the Editors of Publications International, Ltd.

A look at the night sky at any time of year will reveal a faint band of light stretching across the sky -- our solar system's home, the Milky Way. How much do we really know about it?

By Craig Freudenrich, Ph.D. & Desiree Bowie

The Straith Letter was fabricated by two UFO writers. The letter alleged U.S. State Department had significant evidence about extraterrestrial life. Read how the fake letter from a government official fooled UFO contactee George Adamski.

By the Editors of Publications International, Ltd.

Men in black have been in UFO folklore since Albert Bender mysteriously shut down his International Flying Saucer Bureau. Where do men in black come from and whose interests do they serve?

By the Editors of Publications International, Ltd.

John Lear and is one of the chief conspiracy theorists of the so-called "dark side movement", which suspects a secret government of illicit dealings with aliens. Learn more about John Lear and the dark side.

By the Editors of Publications International, Ltd.

Otis Carr was a businessman and hoaxster who founded OTC Enterprises to build and sell a free-energy spaceship, the OTC-X1. Read more about Otis Carr.

By the Editors of Publications International, Ltd.

Majestic 12, or MJ-12, was a secret government research team. The team was tasked with investigating multiple UFO crash sites. Read more about the Majestic 12 letter to Jaime Shandera and the ensuing controversy.

By the Editors of Publications International, Ltd.