Posts

Showing posts from February, 2023

Ceramica (also spelled as "cerámica")

Image
  Human beings appear to have been making their own ceramics for at least 26,000 years, subjecting clay and silica to intense heat to fuse and form ceramic materials.   Overall, ceramics play an important role in human culture and industry, and continue to be produced and admired around the world. Ceramica (also spelled as "cerámica") is a term used to describe the art and science of making ceramic objects. Ceramic objects are typically made from a mixture of clay, minerals, and water that are shaped and then fired at high temperatures to create a hardened, durable material. The word "ceramic" comes from the Greek word κεραμικός (keramikos), "of pottery" or "for pottery", from κέραμος (keramos), "potter's clay, tile, pottery". The earliest known mention of the root "ceram-" is the Mycenaean Greek ke-ra-me-we. Modern ceramic art and design continue to be popular today, with contemporary artists and designers exploring new

Kapteyn's Star constellation Pictor

Image
Kapteyn's Star it is the closest halo star to the Solar System. With a magnitude of nearly 9 it is visible through binoculars or a telescope, this stars is located in the Milky Way galaxy, also known for high proper motion, meaning that it moves relatively quickly across the sky. This star very important nevose has been studied extensively by astronomers, in particularly it has a high metallicity compared material to other stars of its age. Metallicity refers to the amount of elements heavier than helium. In 2014, Kapteyn's Star was announced to host two planets, Kapteyn b and Kapteyn c. Kapteyn b was described as the oldest-known potentially habitable planet. Prof Jacobus Cornelius Kapteyn was a Dutch astronomer. He carried out extensive studies of the Milky Way and was the discoverer of evidence for galactic rotation. In 1897, as part of the above work, he discovered Kapteyn's Star. It had the highest proper motion of any star known until the discovery of Barnard's St