HELSINKI — China has selected near-Earth object 2019 VL5 for a combined asteroid deflection and observation test to launch 2025. The mission will use a Long March 3B rocket and carry both an impactor ...

A challenging optical illusion is baffling social media users, tasking them to find a hidden child within a green tree and bush scene. The boy is expertly camouflaged by leaves and shadows, making him ...

For the visual and observation test, there are various ways, but among these, optical illusions are the best way to test our visual perception. An Optical Illusion is a type of puzzle which requires ...