Albert Einstein was right: Dark energy is constant throughout the universe and causing it to expand.
Is a new viral video of an alien body recovered in Russia for real?
The debate over a measured deceleration in our Pioneer and Voyager deep space probes may be reaching a climax.
Does a 1950 FBI document prove that the Roswell UFO crash was real?
Historians are resorting to grave-digging in an effort to learn the true identity of the woman in the iconic painting.
In January, a UFO videotaped over Jerusalem made news worldwide. Early skeptical analysis branded it a hoax, but was it?
On Saturday, aliens invaded. On Monday, NASA denied their existence.
Clumps found on a remote island where Earhart is thought to have lived as a castaway may be human feces.
Could there be a massive planet well beyond the orbit of Pluto? Unfortunately, this "extraordinary" claim is based on rather "ordinary" evidence.
No one has figured out how to read the enigmatic Voynich Manuscript, but now we know how old it is.