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The area contains a biosphere nature reserve called Central Black Earth Nature Reserve (42 km 2 (16 sq mi)). It was created in 1935 within the Kursk and Belgorod oblasts. A prime specimen of forest steppe in Europe, the nature reserve consists of typical virgin land ( tselina) steppes and deciduous forests. Juozas Vareikis [ ru] was the First ...
The territory of Central Black Earth Biosphere Reserve was divided between the core area, the buffer zone, and the transition zone. V.V. Alekhin nature reserve was the core of new biosphere reserve, its territory was divided into five fragments, three of which were near such big cities as Kursk and Stariy Oskol.
Primordial black hole. Formation of the universe without (above) and with (below) primordial black holes. In cosmology, primordial black holes ( PBHs) are hypothetical black holes that formed soon after the Big Bang. In the inflationary era and early radiation-dominated universe, extremely dense pockets of subatomic matter may have been tightly ...
The deadliest day of the four-day 2011 Super Outbreak which was the largest and costliest outbreak in recorded (U.S.) history. A total of 216 tornadoes (including four long-track EF5 tornadoes between Mississippi and Alabama) touched down in 24 hours and killed 348 people (including 24 indirectly), the second-most tornado-related fatalities in ...
Neil deGrasse Tyson. Neil deGrasse Tyson ( US: / dəˈɡræs / də-GRASS or UK: / dəˈɡrɑːs / də-GRAHSS; born October 5, 1958) is an American astrophysicist, author, and science communicator. Tyson studied at Harvard University, the University of Texas at Austin, and Columbia University. From 1991 to 1994, he was a postdoctoral research ...
Earth Day reminds us that access to nature isn’t equal, especially for Black children. Josiah Bates. April 22, 2024 at 6:00 AM. Across the country, minorities in low-income neighborhoods ...
Sagittarius A*, abbreviated Sgr A* ( / ˈsædʒ ˈeɪ stɑːr / SADGE-AY-star [3] ), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way. Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster ...
Einstein-aether theory. In physics the Einstein-aether theory, also called aetheory, is the name coined in 2004 for a modification of general relativity that has a preferred reference frame and hence violates Lorentz invariance. These generally covariant theories describes a spacetime endowed with both a metric and a unit timelike vector field ...