X-rays
X-rays are powerful waves of energy. Like light, X-rays are a form of radiation. An X-ray machine makes X-rays and directs them toward an object.
Yacht
A Yacht is a small vessel used for pleasure, cruising, or racing. There are two main types: Sailing, and Motor.
Yama
Yama, also known as Kala or Dharmaraja, is the lord of death in Hindusim or Sanathana dharma. He is the son of Surya, the sun god.
Yeast
Yeast is usually a single-celled fungus. It is found worldwide in soils and on plant surfaces.
Yosemite National Park
Yosemite National Park is a national preserve in the Sierra Nevadamountains, central California, in the United States. In 1890, It is made a national park.
Younger Dryas Impact Hypothesis
It proposes that an asteroid or comet hit the Earth about 12,800 years ago, causing a period of extreme cooling that contributed to extinctions of more than 35 species of megafauna including giant sloths, sabre-tooth cats, mastodons and mammoths.
Yuga
Yuga is a unit of the cosmic cycle in Hindu cosmology. According to Hinduism, Time is endless and divided into four yugas.
Yugoslavia
Yugoslavia was a former federated nation from 1929 to 2003 in Europe. It is situated on the Balkan Peninsula and the southeastern part of the continent. The name means “land of the South Slavs.”
Yukon River
Yukon River is located in North America and it flows through the central Yukon Territory of northwestern Canada and the central region of the U.S. state of Alaska.
Yuri Gagarin
Russian-Soviet pilot and cosmonaut Yuri Gagarin is well-known as the first human to journey into outer space.