An endangered Australian frog has been hiding a remarkable visual trick in plain sight. Researchers at the University of Newcastle discovered that the green and golden bell frog (Ranoidea aurea) has iridescent skin on its inner thighs. As the frog or observer moves, the normally blue area can appear green, creating one of the clearest […]
Rare Iridescent Optical Effect Discovered in a Famous Australian Frog
An endangered Australian frog has been hiding a remarkable visual trick in plain sight. Researchers at the University of Newcastle discovered that the green and golden bell frog (Ranoidea aurea) has iridescent skin on its inner thighs. As the frog or observer moves, the normally blue area can appear green, creating one of the clearest […]
Urban Rodents Are Evolving To Survive Common Poisons
Urban rodents may be evolving genetic defenses against widely used control methods. A mouse that eats poison and survives does more than escape a trap. It may pass that survival advantage to the next generation. That possibility is becoming increasingly relevant in cities across the northeastern United States, where pest control professionals have reported that […]
The Strange Force That Could Slow Interstellar Solar Sails
Solar sails may encounter drag from light itself as they approach a significant fraction of the speed. Getting a spacecraft to another star is not simply a matter of building a bigger rocket. Chemical propulsion is far too slow for interstellar travel on practical timescales, which is why many mission concepts turn to light itself […]
The Strange Force That Could Slow Interstellar Solar Sails
Solar sails may encounter drag from light itself as they approach a significant fraction of the speed. Getting a spacecraft to another star is not simply a matter of building a bigger rocket. Chemical propulsion is far too slow for interstellar travel on practical timescales, which is why many mission concepts turn to light itself […]
The Strange Force That Could Slow Interstellar Solar Sails
Solar sails may encounter drag from light itself as they approach a significant fraction of the speed. Getting a spacecraft to another star is not simply a matter of building a bigger rocket. Chemical propulsion is far too slow for interstellar travel on practical timescales, which is why many mission concepts turn to light itself […]
The Strange Force That Could Slow Interstellar Solar Sails
Solar sails may encounter drag from light itself as they approach a significant fraction of the speed. Getting a spacecraft to another star is not simply a matter of building a bigger rocket. Chemical propulsion is far too slow for interstellar travel on practical timescales, which is why many mission concepts turn to light itself […]
The Strange Force That Could Slow Interstellar Solar Sails
Solar sails may encounter drag from light itself as they approach a significant fraction of the speed. Getting a spacecraft to another star is not simply a matter of building a bigger rocket. Chemical propulsion is far too slow for interstellar travel on practical timescales, which is why many mission concepts turn to light itself […]
The Strange Force That Could Slow Interstellar Solar Sails
Solar sails may encounter drag from light itself as they approach a significant fraction of the speed. Getting a spacecraft to another star is not simply a matter of building a bigger rocket. Chemical propulsion is far too slow for interstellar travel on practical timescales, which is why many mission concepts turn to light itself […]
The Strange Force That Could Slow Interstellar Solar Sails
Solar sails may encounter drag from light itself as they approach a significant fraction of the speed. Getting a spacecraft to another star is not simply a matter of building a bigger rocket. Chemical propulsion is far too slow for interstellar travel on practical timescales, which is why many mission concepts turn to light itself […]