The arrival of plants on Earth changed the planet and its inhabitants in big ways, and a new study suggests they arrived far earlier than thought.
SpaceX called off an attempted launch of its Falcon 9 rocket in
The latest space-piercing concept launching from earth: A commercial, one-rocket space station that could carry astronauts to low-earth orbit, the moon and even Mars.
Though slightly lopsided, the towering, Great Pyramid of Giza is an ancient feat of engineering, and now an archaeologist has figured out how the
Unlike most UFO stories, this one appears to have substance.
A dark storm on
If humanity does indeed have a close encounter of the third kind, it is likely to be more of an