Powerpoint
... more than 1 km − Search programs are looking for fast-moving dark objects against the backdrop of space − Largest NEOs pose the greatest risk and are easiest to find − Scientists map position of specific NEOs over time to chart their course relative to Earth ...
... more than 1 km − Search programs are looking for fast-moving dark objects against the backdrop of space − Largest NEOs pose the greatest risk and are easiest to find − Scientists map position of specific NEOs over time to chart their course relative to Earth ...
Lecture14
... Where Different Asteroids are Found • The different classes of asteroids are grouped together at different distances from the Sun • Apparently the asteroids are still located near their birthplaces ...
... Where Different Asteroids are Found • The different classes of asteroids are grouped together at different distances from the Sun • Apparently the asteroids are still located near their birthplaces ...
Asteroids The Asteroid Belt Composition and Classification
... Using radioactive dating, the average age of meteorites is between ...
... Using radioactive dating, the average age of meteorites is between ...
4 Asteroids, Comets, and Meteoroids
... More than 1,000 asteroids have orbits that sometimes bring the asteroids very close to Earth’s orbit. Thus, scientists call them near-Earth asteroids. Near-Earth asteroids make up only a very small percentage of the total number of asteroids. However, these asteroids could cause a great deal of dama ...
... More than 1,000 asteroids have orbits that sometimes bring the asteroids very close to Earth’s orbit. Thus, scientists call them near-Earth asteroids. Near-Earth asteroids make up only a very small percentage of the total number of asteroids. However, these asteroids could cause a great deal of dama ...
Meteorites
... would lie rather than stones would fall from heaven." – Thomas Jefferson Astro 102/104 ...
... would lie rather than stones would fall from heaven." – Thomas Jefferson Astro 102/104 ...
Comets - Cloudfront.net
... This crater was formed approximately 50,000 years ago when an iron mass, estimated to be about 80 feet in diameter and weighing over 60,000 tons entered the Earth's atmosphere over the American Southwest. The resulting formation is about 4,000 feet (1,200 meters) wide and 570 feet (175 meters) deep. ...
... This crater was formed approximately 50,000 years ago when an iron mass, estimated to be about 80 feet in diameter and weighing over 60,000 tons entered the Earth's atmosphere over the American Southwest. The resulting formation is about 4,000 feet (1,200 meters) wide and 570 feet (175 meters) deep. ...
13.Asteroids - University of New Mexico
... In 2004, it was reported that the asteroid 2004 MN4 (later named 99942 Apophis) had as much as a 1 in 37 chance of impacting Earth on 13 April 2029. The asteroid is about 1,300 ft (400 m) across and its impact would cause local or regional devastation. Further study of the orbit of Apophis found t ...
... In 2004, it was reported that the asteroid 2004 MN4 (later named 99942 Apophis) had as much as a 1 in 37 chance of impacting Earth on 13 April 2029. The asteroid is about 1,300 ft (400 m) across and its impact would cause local or regional devastation. Further study of the orbit of Apophis found t ...
Asteroid Belt
... comet, then it's a big one: current estimates put its diameter at 70 miles (113 km). ...
... comet, then it's a big one: current estimates put its diameter at 70 miles (113 km). ...
CHP 25
... 1. A bit of matter that enters Earth's atmosphere and survives to reach the ground is called a. a meteor. b. a meteoroid. c. a meteorite. d. a minor planet. e. an asteroid. 2. The Widmanstätten patterns found in some meteorites show that the material a. cooled very slowly. b. cooled very rapidly. c. ...
... 1. A bit of matter that enters Earth's atmosphere and survives to reach the ground is called a. a meteor. b. a meteoroid. c. a meteorite. d. a minor planet. e. an asteroid. 2. The Widmanstätten patterns found in some meteorites show that the material a. cooled very slowly. b. cooled very rapidly. c. ...
15asteroids5s
... Principle source of error is that we have ignored the effects of Mars’s atmosphere Since atmosphere is very thin, error is small ...
... Principle source of error is that we have ignored the effects of Mars’s atmosphere Since atmosphere is very thin, error is small ...
CI513 Instruction and Technology Lesson Planning Guide
... Key Concept(s): What concepts (related to content and/or process) will students encounter as a result of this lesson? Aestroids are tiny planets, and most are concentrated in an area between the orbits of Mars and Jupiter, called the aestroid belt. Meteroids are small bits of debris from comets and ...
... Key Concept(s): What concepts (related to content and/or process) will students encounter as a result of this lesson? Aestroids are tiny planets, and most are concentrated in an area between the orbits of Mars and Jupiter, called the aestroid belt. Meteroids are small bits of debris from comets and ...
Constructing the Solar System: A Smashing Success!
... Asteroids are bodies that formed in the early Solar System, and are likely to represent planetesimals that survived the period of planet building and are still in orbit around the Sun today. Most asteroids are found in orbits between Mars and Jupiter (although some are on Earth-crossing orbits, and ...
... Asteroids are bodies that formed in the early Solar System, and are likely to represent planetesimals that survived the period of planet building and are still in orbit around the Sun today. Most asteroids are found in orbits between Mars and Jupiter (although some are on Earth-crossing orbits, and ...
pdf format
... • A meteor is the glowing trail of hot gas and vaporized debris left by a solid object heated by friction as it moves through the Earth’s atmosphere (generally, at the upper parts) • If the solid body is in space, it is called a meteoroid ...
... • A meteor is the glowing trail of hot gas and vaporized debris left by a solid object heated by friction as it moves through the Earth’s atmosphere (generally, at the upper parts) • If the solid body is in space, it is called a meteoroid ...
Asteroid Terms - OSIRIS
... characters in our solar system, including an asteroid that has its own moon and even one that is shaped like a dog bone! For each letter of the alphabet, we will showcase an asteroid in our solar system and demonstrate its orbit around the Sun. Visit the Galleries page of AsteroidMission.org – home ...
... characters in our solar system, including an asteroid that has its own moon and even one that is shaped like a dog bone! For each letter of the alphabet, we will showcase an asteroid in our solar system and demonstrate its orbit around the Sun. Visit the Galleries page of AsteroidMission.org – home ...
Review Sheet
... Gravity – The attraction of one mass to another. Meteor – The streak of light produced by a small piece of matter in space that is visible when it ...
... Gravity – The attraction of one mass to another. Meteor – The streak of light produced by a small piece of matter in space that is visible when it ...
Chapter 10 - Relativity Group
... • Asteroids are small, generally rocky bodies that orbit Sun • Most asteroids (thousands) lie in the asteroid belt, a region between the orbits of Mars and Jupiter • The first asteroid (Ceres) of this asteroid belt swarm was discovered as a result of a search for the “missing planet” of Bode’s law • ...
... • Asteroids are small, generally rocky bodies that orbit Sun • Most asteroids (thousands) lie in the asteroid belt, a region between the orbits of Mars and Jupiter • The first asteroid (Ceres) of this asteroid belt swarm was discovered as a result of a search for the “missing planet” of Bode’s law • ...
Ch11_Lecture
... night sky for a fraction of a second, is a meteor • A meteor is the glowing trail of hot gas and vaporized debris left by a solid object heated by friction at it moves through the Earth’s atmosphere (generally, at the upper fringes) • If the solid body is in space, it is called a meteoroid ...
... night sky for a fraction of a second, is a meteor • A meteor is the glowing trail of hot gas and vaporized debris left by a solid object heated by friction at it moves through the Earth’s atmosphere (generally, at the upper fringes) • If the solid body is in space, it is called a meteoroid ...
What are Asteroids, Meteors and Comets? How are they similar
... Meteors will only strike the earth surface when they are just the right size, if they are too small they disintegrate into the atmosphere, if they are too big they will often explode when they hit the atmosphere – raining down much smaller pieces Thousands of small meteorites have been found in Anta ...
... Meteors will only strike the earth surface when they are just the right size, if they are too small they disintegrate into the atmosphere, if they are too big they will often explode when they hit the atmosphere – raining down much smaller pieces Thousands of small meteorites have been found in Anta ...
Lecture14: Solar System Debris
... orbit around the sun, be nearly spherical, and must have cleared the neighborhood around ...
... orbit around the sun, be nearly spherical, and must have cleared the neighborhood around ...
Chapter 10
... night sky for a fraction of a second, is a meteor • A meteor is the glowing trail of hot gas and vaporized debris left by a solid object heated by friction at it moves through the Earth’s atmosphere (generally, at the upper fringes) • If the solid body is in space, it is called a meteoroid ...
... night sky for a fraction of a second, is a meteor • A meteor is the glowing trail of hot gas and vaporized debris left by a solid object heated by friction at it moves through the Earth’s atmosphere (generally, at the upper fringes) • If the solid body is in space, it is called a meteoroid ...
Lecture Outlines Natural Disasters, 5th edition
... threw him 2 m • Knocked people off their feet 480 km away • 20 km high column of fire was visible 650 km away • Ground shaking was registered in Russia and Germany • Barometric anomalies from air blast traveled around world twice • Years of speculation before expedition to remote area ...
... threw him 2 m • Knocked people off their feet 480 km away • 20 km high column of fire was visible 650 km away • Ground shaking was registered in Russia and Germany • Barometric anomalies from air blast traveled around world twice • Years of speculation before expedition to remote area ...
chapter19
... as portents of doom, even until very recently: Appearances of comet Kohoutek (1973), Halley (1986), and Hale-Bopp (1997) caused great concern among superstitious. ...
... as portents of doom, even until very recently: Appearances of comet Kohoutek (1973), Halley (1986), and Hale-Bopp (1997) caused great concern among superstitious. ...
asteroids, comets - MSU Solar Physics
... orbit around the sun, be nearly spherical, and must have cleared the neighborhood around ...
... orbit around the sun, be nearly spherical, and must have cleared the neighborhood around ...
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.