During SpaceX's historic Starship orbital flight, a mysterious blue streak on the livestream sparked viral UFO theories on X (formerly Twitter). Experts and Grok clarified it was residual exhaust gas ...

From Starship’s point of view, the booster was hidden below the horizon. Its trail rose into sunlight behind Earth, creating ...

Among the most persistent claims is that extraterrestrials assisted in the construction of ancient civilizations.

Add Yahoo as a preferred source to see more of our stories on Google. A blue-white object spotted during SpaceX's Starship livestream sparked wild alien theories, including claims it was a 'mothership ...