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Earth radius (denoted as R 🜨 or R E) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius ranges from a maximum (equatorial radius, denoted a) of nearly 6,378 km (3,963 mi) to a minimum (polar radius, denoted b) of nearly 6,357 km (3,950 mi).
According to the United States Census Bureau, the city has a geographical area of 68.3 square miles (176.9 km 2 ), 61.4 square miles (159.0 km 2) of which is land, and the remaining 6.9 square miles (17.9 km 2) (10.16%) of which is water. The Anacostia River and the smaller Rock Creek flow into the Potomac River in Washington.
The Hill sphere (gravitational sphere of influence) of the Earth is about 1,500,000 kilometers (0.01 AU) in radius, or approximately four times the average distance to the Moon. [10] [nb 2] This is the maximal distance at which the Earth's gravitational influence is stronger than the more distant Sun and planets. Objects orbiting the Earth must ...
March 25, 1999 [ 1] The Three Mile Island accident was a partial nuclear meltdown of the Unit 2 reactor (TMI-2) of the Three Mile Island Nuclear Generating Station on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania. The reactor accident began at 4:00 a.m. on March 28, 1979, and released radioactive gases and ...
Geographical distance or geodetic distance is the distance measured along the surface of the Earth, or the shortest arch length. The formulae in this article calculate distances between points which are defined by geographical coordinates in terms of latitude and longitude. This distance is an element in solving the second (inverse) geodetic ...
[9] [10] [11] Assuming the universe is isotropic, the distance to the edge of the observable universe is roughly the same in every direction. That is, the observable universe is a spherical region centered on the observer. Every location in the universe has its own observable universe, which may or may not overlap with the one centered on Earth.
It provides payment for personal injuries in a 10-mile radius and compensation for disruption for residents and businesses within a 20-mile radius. [138] In May 2024 a federal judge in the Northern District of Ohio proffered preliminary approval to the $600 million lawsuit settlement claimed by East Palestine residents and businesses. [139]
Neighbors who lived within a 3-mile radius of the June 14, 2021, Chemtool industrial fire in Rockton have reached a $94.5 million preliminary settlement with the company. Neighbors, homeowners and ...