The keyhole effect involves a small spatial region where a planet's gravity can alter the trajectory of a passing asteroid, allowing it to return on a collision course with that planet in the future.

Abstract: To improve the accuracy of external ballistic trajectory prediction to meet the needs of modern battlefields, a framework for optimizing the BP neural network combined with AdaBoost ensemble ...

Selecting the right spot to smash a spacecraft into the surface of a hazardous asteroid to deflect it must be done with great ...

Scientists caution that asteroid deflection must be precise, as striking the wrong spot risks sending it through a gravitational keyhole that sets up a future collision with Earth. Using lessons from ...

Asteroid deflection could backfire if the impact shoves the rock into a cosmic keyhole, a hidden trapdoor in space.

Selecting the right spot to smash a spacecraft into the surface of a hazardous asteroid to deflect it must be done with great ...

For weeks, Elena Adams has been leading her team at the Applied Physics Laboratory (APL) in Laurel, Maryland, through ...

Researchers examining a well-preserved human skeleton recently excavated in Vietnam concluded that the man was about 35 years old when he died some 12,000 years ago and was mortally injured by a ...

Short of flipping a coin, it’s hard to think of a more classic representation of “random chance” than rolling dice. But does that hold up? In practice, sure – but technically speaking? Being really ...

Deep within the world’s most biodiverse ecosystem lurks an army of eight-legged marvels that would make even the bravest explorer think twice. The Amazon rainforest harbors over 3,000 known spider ...

Abstract: To achieve the accuracy and security controlling of human-robot collaborative in the medical laboratory, a multi-algorithm fusion framework for human upper limb trajectory prediction is ...