Earth questions

The Kola Superdeep Borehole is the result of a scientific drilling project of the Soviet Union in the Pechengsky District, on the Kola Peninsula. The project attempted to drill as deep as possible into the Earth's crust. Drilling began on 24 May 1970. The deepest, SG-3, reached 12,262 metres (40,230 ft; 7.619 mi) in 1989 and is the deepest artificial point on Earth, as of April 2019. The borehole is 23 centimetres (9 in) in diameter.

Nevado Ojos del Salado is a stratovolcano in the Andes on the Argentina–Chile border and the highest active volcano in the world at 6,893 m (22,615 ft).[3] It is also the second highest mountain in the Western Hemisphere and Southern Hemisphere and the highest in Chile.

Zhytomyr is a city in the north of the western half of Ukraine.The Teteriv river generally forms the southern boundary of Zhytomyr, though there are also some small areas of Zhytomyr city territory below the southern bank of the river. Its northern part is contaminated by the Chernobyl power plant.

Henry Cavendish, british physicist (1731-1810) was the first scientist to calculate mass of the Earth. Greater accuracy has not been achieved for nearly 100 years. He only made a mistake about 1% compared to today's calculations. Cavendish estimated the mass of the Earth to be 6 billion trillion tons. Modern calculations say about 5.9725 billion trillion tons. (5,97219×10^24 kg)

Geography is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of the Earth and planets. The first person to use the word γεωγραφία was Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be.

Pluto, our tiny intrasolar neighbor, has a surface area of only a scant 6.45 million square miles. That might seem like quite a few square miles to sling around, but by comparison, that’s only one-third of one percent of the Earth’s total surface and small enough to fit entirely within the borders of Russia (6.6 million square miles). Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune. It was the first Kuiper belt object to be discovered and is the largest known plutoid (or ice dwarf).

The last universal common ancestor (LUCA) is the most recent population of organisms from which all organisms now living on Earth have a common descent. LUCA is not thought to be the first living organism on Earth, but only one of many early organisms, whereas the others became extinct. In 2016 study identified a set of 355 genes inferred to have been present in LUCA. LUCA is estimated to have lived some 3.5 to 3.8 billion years ago in the Paleoarchean era.

World Water Day is an annual UN observance day (always on 22 March) that highlights the importance of freshwater. The day is used to advocate for the sustainable management of freshwater resources. World Water Day is celebrated around the world with a variety of events. These can be educational, theatrical, musical or lobbying in nature.

The idea of daylight saving was first conceived by Benjamin Franklin during his sojourn as an American delegate in Paris in 1784. Sometimes, the creator of this solution is George Vernon Hudson, who wanted to "make better use of the long days of summer. The pioneers in the introduction of summer time were Germans during the First World War.

The astronomical unit (AU) represents the mean distance between the Earth and our sun. An AU is approximately 93 million miles (150 million km). It’s approximately 8 light-minutes.