Are you ready to put your eyes to the ultimate test? Today, we have a challenge that seems simple at first but can stump even the sharpest minds. It’s called the “Spot the 409” challenge, and it’s all ...

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 ...

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 ...