
The 'doorway' seen on Mars is not for aliens. Here's how it really formed.
The internet erupted after a photograph from the Mars Curiosity rover appeared to show an "alien door," experts are pretty sure it's just a natural feature.
Reference Relativity is one of the most famous scientific theories of the 20th century, but how well does it explain the things we see in our daily lives?
Reference From lightning to space rocks, here are ideas for how the first life on Earth came to be.
Reference Crop circles that mysteriously appear in farmers' fields have puzzled experts and sparked UFO theories.