Barnard 68 is a dark absorption nebula with a high concentration of molecular hydrogen and interstellar dust grains. The region is so thick with dust that visible light from background stars is efficiently absorbed, making it opaque at visible wavelenghts. Image Credit: ESO

When excitatory neurotransmitters are released in response to an influx of calcium ions triggered by an action potential, they bind to receptors in the postsynaptic neuron, which leads to an influx of sodium ions and cell depolarization. Video Credit: Helix Animation #Biology

Velox is a robot capable of swimming through water and crawling over ice, snow, sand and other grounds using a coordinated system of actuators powering soft, undulating fins, granting biomimetic properties reminiscent of the animal kingdom. Video Credit: Pliant Energy Systems

This is table salt magnified and processed under an electron microscope. At the atomic level the arrangement of sodium cations and chloride anions is mostly regular and symmetric, forming a particularly stable crystal lattice structure governed by the electrostatic force.

Soli is a miniature radar technology developed by Google ATAP with the goal of recognizing hand gestures. The system emits radio waves and captures the portion reflected back phase shifted. The signals are processed and fed into machine learning models for gesture classification.

This is Arp 273 by Hubble, a pair of galaxies gravitationally interacting with each other. It is thought that these galaxies already encountered in the past, and that their mutual tidal influences affected their structures, also leading to enhanced star formation activity sites.

This video shows an Euler's disk gradually losing its rotational energy as a result of friction with the platform surface, air, and even within the disk itself. The energy is primarily converted into heat and sound waves energy.

Robo-Glove was developed by NASA and GM to reduce workers' stress injuries and provide extra gripping force to operate tools through actuated artificial tendons. Pressure sensors in the fingertips provide feedback to the control system regulating the level of motors' actuation.

Octopi camouflage to hunt, avoid predation and more. They use muscles to control chromatophores' pigment sacs, to display different colors and brightness. They also use muscles to change their body shape and to control papillae to alter skin texture. Video Credits: oceanlife us