Stony-Iron Meteorites are the Most Exotic of All Space Debris Found
... Stony-Iron Meteorites are the Most Exotic of All Space Debris Found on Earth ...
... Stony-Iron Meteorites are the Most Exotic of All Space Debris Found on Earth ...
other objects in solar system
... • Approximately 65 million years ago an asteroid the size of a mountain struck Earth the result was a catastrophic change to Earth’s atmosphere. Some scientists hypothesize that these changes are responsible for global mass extinctions of thousands of species, including the dinosaurs. • Approximate ...
... • Approximately 65 million years ago an asteroid the size of a mountain struck Earth the result was a catastrophic change to Earth’s atmosphere. Some scientists hypothesize that these changes are responsible for global mass extinctions of thousands of species, including the dinosaurs. • Approximate ...
The Solar system
... As the list goes down, the planet gets further from the sun. That means Neptune is the furthest planet from the sun! ...
... As the list goes down, the planet gets further from the sun. That means Neptune is the furthest planet from the sun! ...
Review: sun spots and solar flares inner and outer planets what
... Comets travel in short and long periods around the sun in elliptical orbits ...
... Comets travel in short and long periods around the sun in elliptical orbits ...
Section 5- Comets, Asteroids, and Meteors
... - When they get close enough to the sun, the sunlight turns the ice into gas and dust. (Which is the light you see in the sky) - Since their orbits are so elliptical, very few comets pass near Earth - Most come from an area in our solar system known as the Oort Cloud Asteroid- oddly shaped space obj ...
... - When they get close enough to the sun, the sunlight turns the ice into gas and dust. (Which is the light you see in the sky) - Since their orbits are so elliptical, very few comets pass near Earth - Most come from an area in our solar system known as the Oort Cloud Asteroid- oddly shaped space obj ...
Chelyabinsk meteor
The Chelyabinsk meteor was a superbolide caused by a near-Earth asteroid that entered Earth's atmosphere over Russia on 15 February 2013 at about 09:20 YEKT (03:20 UTC), with a speed of 19.16 ± 0.15 kilometres per second (60,000–69,000 km/h or 40,000–42,900 mph). It quickly became a brilliant superbolide meteor over the southern Ural region. The light from the meteor was brighter than the Sun, up to 100 km away. It was observed over a wide area of the region and in neighbouring republics. Some eyewitnesses also felt intense heat from the fireball.On account of its high velocity and shallow angle of atmospheric entry, the object exploded in an air burst over Chelyabinsk Oblast, at a height of around 29.7 km (18.4 miles, 97,400 feet). The explosion generated a bright flash, producing a hot cloud of dust and gas that penetrated to 26.2 km, and many surviving small fragmentary meteorites, as well as a large shock wave. The bulk of the object's energy was absorbed by the atmosphere, with a total kinetic energy before atmospheric impact equivalent to approximately 500 kilotons of TNT (about 1.8 PJ), 20–30 times more energy than was released from the atomic bomb detonated at Hiroshima.The object was undetected before its atmospheric entry, in part because its radiant was close to the Sun. Its explosion created panic among local residents, and about 1,500 people were injured seriously enough to seek medical treatment. All of the injuries were due to indirect effects rather than the meteor itself, mainly from broken glass from windows that were blown in when the shock wave arrived, minutes after the superbolide's flash. Some 7,200 buildings in six cities across the region were damaged by the explosion's shock wave, and authorities scrambled to help repair the structures in sub-zero (°C) temperatures.With an estimated initial mass of about 12,000–13,000 metric tonnes (13,000–14,000 short tons, heavier than the Eiffel Tower), and measuring about 20 metres in diameter, it is the largest known natural object to have entered Earth's atmosphere since the 1908 Tunguska event, which destroyed a wide, remote, forested area of Siberia. The Chelyabinsk meteor is also the only meteor confirmed to have resulted in a large number of injuries.The earlier-predicted close approach of another, larger asteroid that same day, the roughly 30-metre 367943 Duende (at the time still known by its provisional designation 2012 DA14) occurred about 16 hours later; the very different orbits of the two objects showed they were unrelated to each other.