Artist’s concept of the Orbiting Carbon Observatory. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/439979/free-photo-image-satellite-nasa-space-shipFree Image from public domain licenseProposed Missions - Terrestrial Planet Finder. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440498/free-photo-image-space-ship-nasaFree Image from public domain licensetriple headed cup in natural honey-color of wood out of which it is carved; the top of the cups are straight and taper into… https://www.rawpixel.com/image/7654749/photo-image-face-vintage-artFree Image from public domain licensestool with female caryatid; seat of the stool is round and flat, with the edges decorated with a repeating pattern of ovals;… https://www.rawpixel.com/image/7654752/photo-image-vintage-art-public-domainFree Image from public domain licenseround flat base surmounted by a cylindrical body with handless arms held out to each side. The neck consists of four disks… https://www.rawpixel.com/image/7654719/photo-image-vintage-art-public-domainFree Image from public domain license