Asteroids

The main Asteroid Belt in the solar system is located between the orbits of Mars and Jupiter. It contains many millions of rocky objects and dust particles, and the dwarf planet Ceres (formerly considered simply the largest of the asteroids).

However, there are other asteroids that orbit outside the main belt; some of them come in as close as Venus, and out as far as Neptune. Beyond Neptune, the Kuiper Belt contains many more icy objects, including three dwarf planets.

The planets between the asteroid belt and the Sun are Mercury, Venus, Earth, and Mars. These four inner planets are also known as the terrestrial planets because they are primarily composed of rock and metal.

The end of the "Mesozoic Era" coincides with the abupt disappearance of almost all large animal life on the Earth, about 65 million years ago. Luis Alvarez determined that a number of interesting factors including a layer of "shocked quartz" and iridium dust that occurred at about the same time, and this led to his hypothesis that a large object had impacted the Earth causing the extinction.

There were no seasons, because no part of the earth was tilted away from it or tilted tword it.

The space station is really never at risk from Asteroids. An asteroid is like a small planet in size, so if by small chance one ever came close to Earth, we would probably all be doomed.

However there is all kinds of space debris that the space station must be protected from. The most common threat is from micro meteorites. These are small particles of space rock that are usually only a few grams in size. It is impossible to avoid them, so spacecraft are designed to survive impacts. There are larger, more dangerous types of debris too, such as broken satellites, lost equipment, or even rocket boosters. The U.S. Strategic Command keeps a catalogue of over 19,000 pieces of space debris 10 cm in diameter and larger. If the space station ever gets too close, it will fire rocket engines to avoid the debris.

The Kuiper Belt is larger than a single asteroid. The Kuiper Belt is a vast region beyond Neptune filled with icy bodies and dwarf planets, while an asteroid is a much smaller rocky and metallic object typically found in the inner solar system.

They orbit the Sun in the same path as Jupiter, and 60° ahead of or behind it.

Yes. The Trojan asteroids orbit along the orbital path of Jupiter at points 60o ahead of and behind it. These regions are two of the "Lagrange points," named after the mathematician who discovered that such orbits could be stable

"B" series v-belts are wider and transmit more horsepower than "A" series belts. V-belt sheaves for A and B series belts often will accept both A or B series belts. These sheaves will usually have pitch diameters stamped on them for both A and B. You will notice the diameter for the "A" belt will be a little smaller pitch diameter because the "A" belt will ride "down" in the groove farther than the "B" belt. You should be able to "google" on something like "gates v-belts" to see examples.

DNC

Ceres has a diameter of 950 km. and a mass of -.95. the closest measurement of the dwarf planets that is closest to Ceres is Pluto. Pluto has a diameter of 2,340 km. and a mass of 13.05. The surface temperature on Ceres is 167 degrees, and Ceres has no atmosphere. Ceres goes in the water frost categorie of planets.

Both asteroids and comets are celestial bodies in space, but they differ in composition and appearance. Asteroids are mainly made of metal and rock, and are found mostly in the asteroid belt between Mars and Jupiter. Comets, on the other hand, are made of ice, dust, and rock, and come from the outer regions of the solar system. Comets also have a tail that forms when they get close to the Sun, while asteroids do not.

small pieces of debris that are from other comets, asteroid's, etc colliding together
Meteoroids are formed by; Scientists look at what they know--the form and composition of meteorites as the see it in the laboratory and the form and composition of the universe as they see it through their telescopes. They then make a guess--pose a hypothesis--as to how meteorites formed. They test the hypothesis by trying to prove it false. Following are the current theories of how meteorites formed:

Proserpina's return to the world

It is essential we try to understand how the dinosaurs died out. It is not just for scientific endeavour.

At the end of the cretaceous life on the planet was already in decline. Dinosaurs and other animals were already becoming extinct even before the K-T impact event. It is likely that the impact in the Yucatan was only the final nail in the coffin of an already dieing world.

Unfortunately the extinction rate now mostly because of human activity is far higher than at the end of the cretaceous (some estimates say that the extinction rate now is faster than at any other time in history). If an impact occurred now we need to know as much as we can so perhaps we can survive.

It is unlikely that a 10km or larger asteroid impact would directly affect the International Space Station orbit, as the ISS is located in low Earth orbit, much closer to the Earth's surface than the impact site of such an asteroid. However, the impact could have secondary effects on Earth's atmosphere and environment that may indirectly impact the ISS.

a 50 m colision happens all the time, the last one was in siberia in the early 1920s

in terms of earth scale the impact would be none

but if hits a populate area could be like a nuclear bomb like hiroshima or nagasaki in a smaller scale

That period of time is called a " sidereal day ". That's not the period of time for your clock
or wristwatch to make a complete rotation.

The earth's rotation is 23hours 56minutes and roughly 4seconds.

The asteroid belt is a region of our solar system between Mars and Jupiter, where a conglomeration of numerous rocky and icy planetesimals have formed a ringlike structure that encircles the sun.

One theory is that the gravity of Jupiter was powerful enough to inhibit these rocky bodies from accreting (gathering) into a single planet. As a result, the only body in the belt large enough to qualify as even a minor planet is the dwarf planet Ceres.

It's likely that the vast majority of the non-cometary rocky and icy bodies found in the Kuiper Belt, the Scattered Disk, and the Oort Cloud (all of which are found beyond the orbit of Neptune) probably qualify as either asteroids or minor planets. So it's possible to conceive of these structures as being asteroid belts as well, albeit ones that are not nearly so densely packed as the one in the inner solar system.

The planetoid belts--the Kuiper and the Main--actually have 2 belts each. Their origin is unknown because no model of planetary formation has been proven. The currently accepted model has no explanation for the twinning of Venus-Earth and Uranus-Neptune and has other serious problems with it. Also, a body that is not a planet can't be called a planet, whether dwarf or minor or otherwise.

Generally asteroids move more slowly because they are in relatively stable orbits. Meteors can come in at any velocity, depending on their source. Comets travel very rapidly when close to the Sun, but come almost to a standstill at the outermost point in their orbits.

Meteors from "meteor showers" generally come from the decay of comets, and are traveling at cometary speeds. Recent radar measurements of recent meteor showers tracked the incoming meteors at 130,000 miles per hour.

Giuseppe Piazzi named the first asteroid Ceres after the Roman goddess of agriculture and harvest. He likely chose this name to symbolize the abundance and fertility associated with the goddess, as well as to honor the place where agriculture was highly valued in society.

The general hypothesis is that we will all die. Any remaining humans would have to revert back to a primordial existence.

A 1,000 kilometers, is the distance from Washington NY to Chicago.

The Chicxulub extintion asteroid, which wiped out 99% of life on Earth was a mere 10km.

Yes, there is gravity in the asteroid belt, but it is much weaker than Earth's gravity due to the belt's low mass and spread-out distribution of asteroids. This weaker gravity allows the asteroids to remain in their orbits without being pulled together into a single body.

Most of the asteroids within our solar system can be found within the Asteroid Belt. Located between the orbits of Mars and Jupiter, the Asteroid Belt consists of millions of individual asteroids of varying sizes - from a speck of dust to hundreds of kilometers in diameter. The largest object within the belt is a dwarf planet - Ceres - which has a mass of 9.47x1020kg and a diameter of 476.2km.

It's estimated there are millions of asteroids in our solar system alone. However, the total number of asteroids in the entire universe is uncertain, as new asteroids are constantly being discovered and our understanding of the universe continues to expand.

Several spacecraft are currently orbiting Mars, including NASA's Mars Reconnaissance Orbiter and MAVEN, as well as the ESA's Mars Express. Jupiter is orbited by NASA's Juno spacecraft, which is studying the planet's atmosphere and magnetic field. These spacecraft provide valuable data and observations that help scientists better understand these planets.

The problem with naming a particular asteroid as the one that "comes closer than any other" is that we keep discovering new asteroids flying around that come even CLOSER. At one time, the asteroid "Eros" was the one described as coming closest, but that title may now go to the asteroid Apophis. Apophis will make a very close approach to the Earth on April 13 (Friday the 13th!) 2029, and again on April 13, 2036. The 2029 pass will bring Apophis closer to the Earth than many communications satellites!