Asteroids
... Asteroids are very small, rocky bodies that orbit the Sun. "Asteroid" means "star-like," and in a telescope, asteroids look like points of light, just like stars. Asteroids are irregularly shaped because they do not have enough gravity to become round. They are also too small to maintain an atmosphe ...
... Asteroids are very small, rocky bodies that orbit the Sun. "Asteroid" means "star-like," and in a telescope, asteroids look like points of light, just like stars. Asteroids are irregularly shaped because they do not have enough gravity to become round. They are also too small to maintain an atmosphe ...
Electromagnetic Waves from TNT Explosions
... phenomena accompanying detonations. In 1990 Boronin et al. published a review article [4] on the physical mechanisms of EM field generation created by the detonation of condensed explosive charges. They proposed that “the mechanism for radio radiation generation by an explosion…is associated with th ...
... phenomena accompanying detonations. In 1990 Boronin et al. published a review article [4] on the physical mechanisms of EM field generation created by the detonation of condensed explosive charges. They proposed that “the mechanism for radio radiation generation by an explosion…is associated with th ...
a PDF file - National Optical Astronomy Observatory
... sublimates before the water ice melts. Real comets are also depleted by sublimation each time they come near the Sun. Ultimately, old comets may break into several pieces or even completely disintegrate. In some cases, the comet may have a solid core that is then left to travel around the comet’s or ...
... sublimates before the water ice melts. Real comets are also depleted by sublimation each time they come near the Sun. Ultimately, old comets may break into several pieces or even completely disintegrate. In some cases, the comet may have a solid core that is then left to travel around the comet’s or ...
The Adventure Is Waiting
... bodies of rock or ice orbiting around the Sun. The largest asteroid is Vesta, almost 330 miles in diameter, much smaller than our Moon (2,200 miles). The distance from the Sun ranges from 204,600,000 to 297,600,000 miles. Ceres was the first asteroid (now dwarf planet) discovered (in 1801), and abou ...
... bodies of rock or ice orbiting around the Sun. The largest asteroid is Vesta, almost 330 miles in diameter, much smaller than our Moon (2,200 miles). The distance from the Sun ranges from 204,600,000 to 297,600,000 miles. Ceres was the first asteroid (now dwarf planet) discovered (in 1801), and abou ...
Space Bits: Outer Space Objects
... occur when the path of a meteroid and the path of the earth’s orbit around the sun collide. Meteors are often referred to as falling stars because they light up as they burn through the earth’s atmosphere. DID YOU KNOW? Millions of meteors occur in the Earth’s atmosphere every day. ...
... occur when the path of a meteroid and the path of the earth’s orbit around the sun collide. Meteors are often referred to as falling stars because they light up as they burn through the earth’s atmosphere. DID YOU KNOW? Millions of meteors occur in the Earth’s atmosphere every day. ...
Gresham College
... images, it was very hard to see what was going on. Then, just as Giotto was virtually at the nucleus, TV screens in Mission Control shuddered - and then went blank. Had Giotto hit the comet? No - but there would be no more pictures. A “big” particle ...
... images, it was very hard to see what was going on. Then, just as Giotto was virtually at the nucleus, TV screens in Mission Control shuddered - and then went blank. Had Giotto hit the comet? No - but there would be no more pictures. A “big” particle ...
Comets vs. Asteroids
... One type is very dark and probably contains clay and silicate rock. Silicates are the most common forms of rocks, minerals, and sand on Earth. Another type is made of silicate and metals. The third type is mostly metals. Asteroids have irregular shapes and are often covered with craters from h ...
... One type is very dark and probably contains clay and silicate rock. Silicates are the most common forms of rocks, minerals, and sand on Earth. Another type is made of silicate and metals. The third type is mostly metals. Asteroids have irregular shapes and are often covered with craters from h ...
meteorite - National Geographic
... One group of stony-iron meteorites, the pallasites, contains yellow-green olivine crystals encased in shiny metal. Astronomers think many pallasites are relics of an asteroid’s core-mantle boundary. Their chemical composition is similar to many iron meteorites, leading astronomers to think maybe the ...
... One group of stony-iron meteorites, the pallasites, contains yellow-green olivine crystals encased in shiny metal. Astronomers think many pallasites are relics of an asteroid’s core-mantle boundary. Their chemical composition is similar to many iron meteorites, leading astronomers to think maybe the ...
Near-Earth objects
... What would happen if a 10 km NEO collided with Earth? 1. Fireball racing through atmosphere 2. People at impact site, seconds to live 3. Air blast would flatten everything for hundreds of kilometers in all directions 4. Massive earthquake at collision 5. Ocean impact would produce giant tsunami hund ...
... What would happen if a 10 km NEO collided with Earth? 1. Fireball racing through atmosphere 2. People at impact site, seconds to live 3. Air blast would flatten everything for hundreds of kilometers in all directions 4. Massive earthquake at collision 5. Ocean impact would produce giant tsunami hund ...
meteorite - National Geographic Society
... crystals encased in shiny metal. Astronomers think many pallasites are relics of an asteroid’s core-mantle boundary. Their chemical composition is similar to many iron meteorites, leading astronomers to think maybe they came from different parts of the same asteroid that broke up when it crashed int ...
... crystals encased in shiny metal. Astronomers think many pallasites are relics of an asteroid’s core-mantle boundary. Their chemical composition is similar to many iron meteorites, leading astronomers to think maybe they came from different parts of the same asteroid that broke up when it crashed int ...
Asteroids, Meteors, Comets
... – No, the gravitational pull of Jupiter prevented the planetesimal in the asteroid belt to coalesce into planet ...
... – No, the gravitational pull of Jupiter prevented the planetesimal in the asteroid belt to coalesce into planet ...
Comets- Visitors from the Frozen Edge of the Solar System
... Solar system, it begins to warm up and its surface becomes active. The solid ice turns directly into gas in a process known as sublimation, and is liberated from the surface. The process is particularly apparent on the sunward side of the nucleus, where the gases escape as jets, particularly through ...
... Solar system, it begins to warm up and its surface becomes active. The solid ice turns directly into gas in a process known as sublimation, and is liberated from the surface. The process is particularly apparent on the sunward side of the nucleus, where the gases escape as jets, particularly through ...
here - ScienceA2Z.com
... about half. But we know very few of the smaller ones; there are probably considerably more than a million asteroids in the 1 km range. The largest asteroid by far is 1 Ceres. It is 974 km in diameter and contains about 25% of the mass of all the asteroids combined. The next largest are 2 Pallas, 4 V ...
... about half. But we know very few of the smaller ones; there are probably considerably more than a million asteroids in the 1 km range. The largest asteroid by far is 1 Ceres. It is 974 km in diameter and contains about 25% of the mass of all the asteroids combined. The next largest are 2 Pallas, 4 V ...
COMETS! - Santa Ana College
... imminent. A lot of these videos claim the government or NASA is covering up the truth. But as we say to people getting medical advice, always look for a second opinion. Keep in mind, that if a large object is spotted in our solar system, telescopes and cameras used by backyard astronomers allow them ...
... imminent. A lot of these videos claim the government or NASA is covering up the truth. But as we say to people getting medical advice, always look for a second opinion. Keep in mind, that if a large object is spotted in our solar system, telescopes and cameras used by backyard astronomers allow them ...
Teacher Resource Guide - Sci-Port
... of space, it is a solid; when hit by sunlight, it becomes a gas. Formaldehyde has been observed in comet comas. Gas-Ion Tail— This type of comet tail forms when the solar wind separates gases from the coma, pushing them outward away from the Sun in a straight path. Graphite (C)— A state of carbon in ...
... of space, it is a solid; when hit by sunlight, it becomes a gas. Formaldehyde has been observed in comet comas. Gas-Ion Tail— This type of comet tail forms when the solar wind separates gases from the coma, pushing them outward away from the Sun in a straight path. Graphite (C)— A state of carbon in ...
solar system debris (chapter 14)
... The Earth’s orbit intersects a stream of meteoric material left along the orbit of Comet Halley, producing two meteor showers, the Eta Aquarids in May and the Orionids in October. Other comets intersect the Earth’s orbit just once during their trip around the Sun. Annual meteor showers are created w ...
... The Earth’s orbit intersects a stream of meteoric material left along the orbit of Comet Halley, producing two meteor showers, the Eta Aquarids in May and the Orionids in October. Other comets intersect the Earth’s orbit just once during their trip around the Sun. Annual meteor showers are created w ...
Asteroids and Meteoroids
... day. It is believed that violent collisions are common for asteroids, and that many asteroids have in their past experienced complex rotations like Toutatis as a consequence of such collisions. However, internal friction has caused them to dampen into simple rotation in relatively brief amounts of t ...
... day. It is believed that violent collisions are common for asteroids, and that many asteroids have in their past experienced complex rotations like Toutatis as a consequence of such collisions. However, internal friction has caused them to dampen into simple rotation in relatively brief amounts of t ...
File
... Halley’s Comet came especially close to the Earth during its 1910 return, and the Earth actually passed through its ...
... Halley’s Comet came especially close to the Earth during its 1910 return, and the Earth actually passed through its ...
Characteristics of Near
... What would happen if a 10 km NEO collided with Earth? 1. Fireball racing through atmosphere 2. People at impact site, seconds to live 3. Air blast would flatten everything for hundreds of kilometers in all directions 4. Massive earthquake at collision 5. Ocean impact would produce giant tsunami hund ...
... What would happen if a 10 km NEO collided with Earth? 1. Fireball racing through atmosphere 2. People at impact site, seconds to live 3. Air blast would flatten everything for hundreds of kilometers in all directions 4. Massive earthquake at collision 5. Ocean impact would produce giant tsunami hund ...
Comets vs. Asteroids
... materials start to boil off. This material forms a cloud around the nucleus. The cloud is called the coma and may be hundreds of thousands of miles across. Comet tails appear as the comet approaches the Sun and can grow to be millions of miles long. The particles in the solar wind push the small dus ...
... materials start to boil off. This material forms a cloud around the nucleus. The cloud is called the coma and may be hundreds of thousands of miles across. Comet tails appear as the comet approaches the Sun and can grow to be millions of miles long. The particles in the solar wind push the small dus ...
Comets In 2013 - WordPress.com
... Now introduce the idea of other objects in orbit around the Sun. What else circles the Sun? Other planets - some are closer to the Sun and travel more quickly. For example it takes Mercury less than 3 months to complete one trip around the Sun. That’s the same amount of time it takes us to get just ...
... Now introduce the idea of other objects in orbit around the Sun. What else circles the Sun? Other planets - some are closer to the Sun and travel more quickly. For example it takes Mercury less than 3 months to complete one trip around the Sun. That’s the same amount of time it takes us to get just ...
13. Remnants of Rock and Ice: Asteroids, Comets, and Pluto
... • Analysis of orbits shows where comets in the inner Solar System have come from. Based on the number of comets seen in the inner Solar System and the relatively short times during which comets can survive in the inner Solar System, we conclude that the Oort cloud and Kuiper belt must contain enormo ...
... • Analysis of orbits shows where comets in the inner Solar System have come from. Based on the number of comets seen in the inner Solar System and the relatively short times during which comets can survive in the inner Solar System, we conclude that the Oort cloud and Kuiper belt must contain enormo ...
Meteorites - indstate.edu
... Discovered at Norton County, Kansas, this type of meteorite is known as an achondrite. It has a basaltic1 composition and was probably formed when an asteroid melted about 4.5 billion years ago. The asteroid broke up some time later and this small piece of the asteroid was captured by Earth's gravi ...
... Discovered at Norton County, Kansas, this type of meteorite is known as an achondrite. It has a basaltic1 composition and was probably formed when an asteroid melted about 4.5 billion years ago. The asteroid broke up some time later and this small piece of the asteroid was captured by Earth's gravi ...
Make a Comet Motion Flip Book
... blows away from the Sun, causes the tail to always point away from the Sun in the same way that smoke from a smoke stack moves away from the direction of the wind. • Notice when you flip the book that the comet moves slowly in its orbit when it is far from the Sun and quickly when it is near to the ...
... blows away from the Sun, causes the tail to always point away from the Sun in the same way that smoke from a smoke stack moves away from the direction of the wind. • Notice when you flip the book that the comet moves slowly in its orbit when it is far from the Sun and quickly when it is near to the ...
Tunguska event
The Tunguska event was a large explosion that occurred near the Stony Tunguska River, in what is now Krasnoyarsk Krai, Russia, on the morning of June 30, 1908 (N.S.). The explosion over the sparsely populated Eastern Siberian Taiga flattened 2,000 km2 (770 sq mi) of forest and caused no known casualties. The cause of the explosion is generally thought to have been a meteor. It is classified as an impact event, even though no impact crater has been found; the meteor is thought to have burst in mid-air at an altitude of 5 to 10 kilometres (3 to 6 miles) rather than hit the surface of the Earth. Different studies have yielded varying estimates of the superbolide's size, on the order of 60 to 190 metres (197 to 623 feet), depending on whether the meteor was a comet or a denser asteroid. It is considered the largest impact event on Earth in recorded history.Since the 1908 event, there have been an estimated 1,000 scholarly papers (mainly in Russian) published on the Tunguska explosion. Many scientists have participated in Tunguska studies: the best known are Leonid Kulik, Yevgeny Krinov, Kirill Florensky, Nikolai Vladimirovich Vasiliev, and Wilhelm Fast. In 2013, a team of researchers led by Victor Kvasnytsya of the National Academy of Sciences of Ukraine published analysis results of micro-samples from a peat bog near the center of the affected area showing fragments that may be of meteoritic origin.Estimates of the energy of the air burst range from 30 megatons of TNT (130 PJ) to 10 and 15 megatons of TNT (42 and 63 PJ), depending on the exact height of burst estimated when the scaling-laws from the effects of nuclear weapons are employed. While more modern supercomputer calculations that include the effect of the object's momentum estimate that the airburst had an energy range from 3 to 5 megatons of TNT (13 to 21 PJ), and that simply more of this energy was focused downward than would be the case from a nuclear explosion.Using the 15 megaton nuclear explosion derived estimate is an energy about 1,000 times greater than that of the atomic bomb dropped on Hiroshima, Japan; roughly equal to that of the United States' Castle Bravo ground-based thermonuclear test detonation on March 1, 1954; and about two-fifths that of the Soviet Union's later Tsar Bomba (the largest nuclear weapon ever detonated).It is estimated that the Tunguska explosion knocked down some 80 million trees over an area of 2,150 square kilometres (830 sq mi), and that the shock wave from the blast would have measured 5.0 on the Richter scale. An explosion of this magnitude would be capable of destroying a large metropolitan area, but due to the remoteness of the location, no fatalities were documented. This event has helped to spark discussion of asteroid impact avoidance.