Asteroids

i am not quite sure what the aestroid is called although i do know that it has the letters : ROES...

The revolution of asteroids in the asteroid belt is typically between 2 to 6 years, depending on the specific asteroid's distance from the Sun and its orbital speed. The average distance of the asteroid belt from the Sun is about 2.2 to 3.3 astronomical units (AU), with one AU being the average distance between the Earth and the Sun.

Iridium is rare on earth, but plentiful in meteorites. The Alvarez's suggested that a huge asteroid or comet, hit the Earth at that time. The result of such a force would be a gigantic explosion that would throw dust clouds into the sky, darkening the planet. Massive forest fires caused by the hit would also add smoke to the sky. which would then cause climate change ending the dinosaurs rein. As dinosaurs can not keep there body temp. Thats some of the evidence that i am using in my case study about dinosaurs. :-) Hope this helps xx

Some asteroids do have high levels of iridium, but it is not a universal trait. Iridium is found in varying concentrations in different types of asteroids, depending on their composition and origin. The presence of iridium in an asteroid can provide insights into its history and formation.

Asteroids are small rocky bodies that orbit the sun, most of them between the orbits of Mars and Jupiter.

Meteors are the phenomena of very small bodies burning up in the atmosphere.

There have been about 300 identified Earth-crossing asteroids. The total number of asteroids that cross the Earth's orbit is estimated to be significantly greater than this; by one estimate, there are perhaps 1500 asteroids that are greater than 1km across, and 135,000 steroids that are greater than 100m across.

The Main Asteroid Belt is a region located between Mars and Jupiter that contains millions of small celestial objects called asteroids. These asteroids vary in size from small rocky fragments to large bodies several hundred kilometers in diameter. The Main Asteroid Belt is a remnant of the early solar system's formation and provides important insights into the processes that shaped our planetary system.

The moon is a satellite, although people propose now and then that the earth-moon system could be considered a double or binary planetary system. Since the barycenter (the center of gravity of the earth-moon) is within the body of the earth, considering the moon as a satellite makes more sense.

The dinosaurs were killed by an asteroid impact around 66 million years ago at the end of the Cretaceous period. This event triggered mass extinctions and led to the decline of dinosaurs and the rise of mammals as the dominant terrestrial animals.

A small piece of an asteroid that has broken off in outer space is called a meteoroid. When this meteoroid enters the Earth's atmosphere and burns up due to friction with air particles, it creates a streak of light called a meteor or shooting star.

small asteroids are called meteoroids
minor planet or planetoids

The gravity on Ceres - which is a "dwarf planet" or "plutoid" in what is called the asteroid belt - is 3% of Earth's. If the weight of an average man on Earth is 175 pounds, then on Ceres he would weigh 2.25 pounds.

Unlike old science fiction movies which gives you the impression that asteroids are close together, the average distance between asteroids is approximately 1 million km. If you were to travel through the asteroid belt, the chance of encountering an asteroid is next to nothing.

the largest asteroid ever found" The largest asteroid is CERES, in the asteroid belt between Mars and Jupiter. It is 580 miles (930 km) in diameter , about the size of Texas. It accounts for about 25% of the total mass of the belt.

Asteroids are located in the asteroid belt between Mars and Jupiter, as well as in other regions of the solar system. Some asteroids also cross Earth's orbit and can come relatively close to our planet.

The 'Asteroid Belt' is composed of an unknown (but very high) number of Asteroids in an orbit around the sun many 10's of millions of kilometers in circumference.

This asteroids can collide or orbit for years without coming within a million miles of another. As a result the distance between one and its closest neighbor can be a few feet (or less) to 1000's of miles apart and this is changing all the time.

I do not believe the 'Average' separation has reliably been calculated, but the answer would probably be larger than a 1000 miles. This figure would include particles the size of a fist, or smaller, as well. As you include asteroids of only a certain size or larger; then the average separation would also get larger (since there are fewer and fewer numbers of asteroids as the size increases).

Yes, there are numerous asteroids in the asteroid belt located between Mars and Jupiter, but some may enter Saturn's orbit. These asteroids are often referred to as Trojan asteroids or irregular moons. They share an orbit with Saturn, either ahead of or behind the planet along its path around the Sun.

According to the US naval astronomical applications department the 3rd largest asteroid body is called 4 Vesta.

Ref: http://aa.usno.navy.mil/faq/docs/asteroid_masses

Actually, they do not know what the largest asteroid is since Pallas and Vesta both have been designated as the second largest asteroid after Ceres, which is no longer an asteroid. Since Ceres is a dwarf planet now, Pallas or Vesta is the largest now. Since Ceres is a dwarf planet, the third largest asteroid is Hygiea now. Pallas and Vesta are the top two largest asteroids now. Vesta is more massive than Pallas, though.

Asteroids can vary widely in size, with diameters ranging from a few meters to several hundred kilometers. The largest known asteroid, Ceres, has a diameter of about 940 kilometers, while smaller asteroids may only be a few meters across.

The mass extinction event that killed the dinosaurs is believed to have been caused by a large asteroid impact that occurred around 66 million years ago. This impact resulted in a catastrophic chain of events, including widespread wildfires, tsunamis, and a nuclear winter-like effect caused by dust blocking out sunlight, leading to the extinction of the dinosaurs and many other species.

The main difference is that asteroids tend to be dense chunks of solid rock, iron and organic material, whereas comets are less dense and more loose lumps of ice, dirt, rock and organic matter - "dirty snowballs." Asteroids seem to be dead, inert chunks of solid rock, but the ice in comets means that when they get close to the Sun, some of that ice starts to melt and evaporate into space, making the comet grow a fuzzy, thin atmosphere called a coma, which ultimately streams out behind the comet (pushed out by the Solar Wind, a stream of charged particles flowing from the Sun into space) and grows into a tail.

Most asteroids are held in a belt between Mars and Jupiter, where they follow roughly circular, planet-like orbits. Comets, on the other hand, tend to come from much further out in the Solar System - either from the Kuiper Belt beyond Neptune, or the Oort Cloud much further out - and have very long, thin, highly eccentric and elliptical orbits.

Recently though scientists have found the distinction between asteroids and comets isn't all that clear cut. Objects called centaurs, which travel between the orbits of Saturn and Neptune, look like asteroids and have asteroid-like orbits, yet are made of significant amounts of ice and often get fuzzy when they get relatively close to the Sun. Many asteroids in the outer part of the main asteroid belt contain a lot of ice. And many asteroids we can point to seem to be ancient ex-comets whose ice has all melted and evaporated, leaving behind the dust and rock that has compacted into a single mass - an asteroid.

What happened when an asteroid hit the Earth is debatable but many scientists believe that this is what may have wiped out the dinosaurs. Some people believe that the asteroid created a dust cloud that covered the planet and caused a winter that froze most life.

Pallas or 2 Pallas has a mass of about 2.11 x 1020 kg

The Earth for comparison has a mass of 5.9736 x 1024 kg

The weight of an asteroid can vary greatly depending on its size and composition. Smaller asteroids can weigh only a few kilograms, while larger ones can weigh several billion kilograms. For example, the asteroid Ceres, which is the largest object in the asteroid belt, has an estimated weight of around 939 trillion kilograms.