Asteroid defense mission shifted the orbit of more than its target

On September 26, 2022, NASA’s Double Asteroid Redirection Test (DART) spacecraft crashed into a binary asteroid system. By ...
IEEE

Democracy in Volumes: Generation of Equal/Uniform Intensity High-Order Bessel Beams Using a Logarithmic Axicon and a Vortex Phase Plate

Abstract: We propose and demonstrate a scheme producing high-order Bessel beams of equal/uniform intensity within a set range by illuminating a logarithmic axicon with a vortex phase plate generated ...