ALIENS

A report rolled out by one of NASA’s scientists has suggested that the Earth's rising levels of greenhouse gases could provoke an alien attack.

Humans should reduce impact on global ecosystems and limit emissions of greenhouse gases to avoid contact with aliens, says a recent report by NASA and Pennsylvania State University.

It may sound like a plot of a sci-fi movie, but aliens might attack Earth to destroy humanity for the greater good of the rest of the Milky Way galaxy.

Thanks to private donations replacing government curtails, a California-based institute is reliving its hopes of hearing potential signals from alien life.

The actors were also joined by Harrison Ford and director Jon Favreau.

For more than a century, mysterious crop circles have baffled scientists and farmers with its complex patterns and sophisticated shapes.

Scientists found evidence of saltwater on Mars. Shifting dark streaks on the planet's surface imply that there is water flowing on Mars.

The tiny blue "Smurfs" battled big-name, big-budget "Cowboys & Aliens" to a surprising tie at the domestic weekend box office with each film ringing up an estimated $36.2 million in ticket sales, according to studio estimates on Sunday.

Sci-fi Western "Cowboys & Aliens" landed in a dead heat with animated family film "The Smurfs" at the weekend box office with each movie taking in about $36.2 million in U.S. and Canadian theaters, according to studio estimates released on Sunday.

William Goldman's famous "Nobody knows anything" line? Still true.

It isn't among the most-hyped movies in theaters and won't win the battle of the weekend box office, but "Life in a Day" may just be the most unusual film playing in theaters this weekend.

Harrison Ford was on David Letterman promoting his latest film "Cowboys & Aliens" when Letterman ran his hand through Ford's hair.

He grew into other roles in films after James Bond film.

"Cowboys & Aliens" star Olivia Wilde talks about her "strange" feelings during the shooting of a "basically naked" scene in front of a hundred people including a cast of Apache warriors, cowboys, and Daniel Craig.

Before "Iron Man," writer/director/actor Jon Favreau was known mostly for indie movies ("Swingers") or lighthearted fare ("Elf"), but after his huge success bringing to life the superhero with a suit of high-tech armor, he became a go-to guy for big-budget, effects-driven Hollywood movies.

The sexy star in Cowboys & Aliens teams up with Daniel Craig and Harrison Ford as they took center stage at the movie's premiere at San Diego's Comic-Con. The smoking hot 27 year old show more than her popping baby blue eyes for the upcoming summer blockbuster. In an interview with Access Hollywood, Wilde talks about her willingness to bare it all on screen.

After the divorce, she is trying to make her career big.

For the premiere of his new shoot-'em-up epic "Cowboys & Aliens," Jon Favreau presented a screening almost as big and bombastic as the movie itself, invading the San Diego Civic Theater with a horde that included Daniel Craig, Harrison Ford, Olivia Wilde, Sam Rockwell, Steven Spielberg and Ron Howard.

The premier of Jon Favreau's latest film Cowboys & Aliens was a star extravaganza as it brought out the industry's big guns like -- Daniel Craig, Harrison Ford, Olivia Wilde, Sam Rockwell and Steven Spielberg.

A list of the major UFO sightings globally after the year 2000.

Are we alone in this whole universe? If the claims of a top Russian astronomer are to be believed, we'll encounter alien civilizations over the next 20 years.