The gravitational pull of the planets is visualized

Gravity is one of the fundamental forces in the universe without which life as we know it was impossible.

The gravity of the sun holds all the planets in orbit in our solar system. However, every planet, natural satellite, and asteroid have their own gravitational pull determined by their size, mass, and density.

Dr. James O'Donoghue, a Planetary Astronomer at Japan Aerospace Exploration Agency, built an animation that clarifies this concept by visualizing the time it takes a ball to drop from one kilometer to the surface of various planets and the Earth's moon, assuming no air impedance.

Interestingly, some giant planets have a pull comparable to smaller ones at the surface; for instance, Uranus pulls the ball down slower than Earth. That is happening because the low average density of Uranus puts the surface far away from the majority of the mass (hence the more minor pull). Likewise, Mars has a mass almost twice Mercury, but you can observe the surface gravity is the equivalent. It suggests that Mercury is much denser than Mars.

Jupiter has the strongest gravitational field among all planets of our Solar System. The animation created by Reddit user AristonD clearly illustrates how Jupiter protects our planet from asteroids.

I think that if it were not for Jupiter, the probability of asteroids like the one that fell on our planet 66 million years ago and wiped out the dinosaurs would be much higher.

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Find cities with similar climate

This map has been created using The Global environmental stratification. The Global environmental stratification (GEnS), based on statistical clustering of bioclimate data (WorldClim). GEnS, consists of 125 strata, which have been aggregated into 18 global environmental zones (labeled A to R) based on the dendrogram. Interactive map >> Via www.vividmaps.com Related posts: - Find cities with similar climate 2050 - How global warming will impact 6000+ cities around the world?

The Appalachian Mountains, the Scottish Highlands, and the Atlas Mounts in Africa were the same mountain range

The Central Pangean Mountains was a prominent mountain ridge in the central part of the supercontinent Pangaea that extends across the continent from northeast to southwest through the Carboniferous , Permian Triassic periods. The mountains were formed due to a collision within the supercontinents Gondwana and Laurussia during the creation of Pangaea. It was comparable to the present Himalayas at its highest peak during the start of the Permian period. It isn’t easy to assume now that once upon a time that the Scottish Highlands, The Appalachian Mountains, the Ouachita Mountain Range, and the Atlas Mountains in northwestern Africa are the same mountains , once connected as the Central Pangean Mountains.

Moose population in North America

The moose population in North America is shrinking swiftly. This decrease has been correlated to the opening of roadways and landscapes into this animal's north range. In North America, the moose range includes almost all of Canada and Alaska, the northern part of New England and New York, the upper Rocky Mountains, northern Minnesota and Wisconsin, Michigan's Upper Peninsula, and Isle Royale. In 2014-2015, the North American moose population was measured at around one million animals. The most abundant moose population (about 700,000) lives in Canada. About 300 000 moose remains in nineteen U.S. states Alaska, Colorado, Connecticut, Idaho, Maine, Massachusetts, Minnesota, Montana, Michigan, Nevada, New Hampshire, New York, North Dakota, Oregon, Utah, Vermont, Washington, Wisconsin, and Wyoming. The largest moose specimens are found in Alaska 200 thousand moose. Below the map shows the size of US states scaled by the moose population. Via www.vividmaps.com

Ecoclimax

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