The unusual specimen raised eyebrows because it appeared capable of causing levitation. An official investigation has not settled the matter, some UFO enthusiasts say.

While scientists moved quickly to calm fears, the episode continued to fuel debate well after the headlines faded. Now, an unexpected response from a US intelligence agency has added a new layer to a ...

A flying piece of cosmic rock or an alien threat? Comet 3I/ATLAS is hurtling through our solar system and captivating scientists and internet users alike. This NASA image shows the interstellar comet ...