0
Asteroids
Asteroids, or planetoids, are rocks larger than meteorites but smaller than planets that orbit around the Sun.
1,071 Questions
Why is a comet bigger than a meteor?
Comets are typically larger than meteors because they are made up of a combination of ice, dust, and rocky material that can span several kilometers in diameter. Meteors, on the other hand, are small rocky or metallic fragments that originate from asteroids or comets and are typically only a few millimeters to a few meters in size.
Where are asteroids hypothesized to have originated?
Asteroids are hypothesized to have originated from the remnants of the early solar system, specifically from the protoplanetary disk of gas and dust that surrounded the young Sun. These leftovers eventually came together to form asteroids in the asteroid belt between Mars and Jupiter, as well as in other regions of the solar system.
The Oort Cloud has not been directly observed by astronomers, while both the Main Asteroid Belt and the Kuiper Belt have been observed and studied. The Oort Cloud is a theoretical region of icy bodies beyond the Kuiper Belt, and its presence is inferred from the trajectories of some comets.
Is the asteroid belt between earth and mars?
Mars' average distance from the sun is greater than Earth's
average distance, and less than the average distance of most
of the members of the asteroid belt.
So, the answer is YES.
What year were asteroids created?
Astroids have not been "created". Astroids are the remains of dead planets and stars that travel through space at speeds of up to 1 million kilometers an hour. Astroids have been around since planets and stars were created.
If Asteroid has a mass of 159 yottagrams than many pounds would this weigh on earth?
3.5 x 10^23. That's on the surface of the earth, which might be difficult to achieve, since if put there it could well alter what you might call the earth, and therefore what things weigh.
What two planets have asteroid belts?
Mars and Venus. But the atmosphere of Venus is many many times denser.
Also, all of the outer planets have similar atmospheres. Jupiter and Saturn
are a very similar pair and Uranus and Neptune are also two that are very similar.
The asteroid 99942 Apophis was set for a possible future impact on April 13, 2036.
However, this data was based on predictions that it would collide with Earth in 2004 and then predictions placed the date as 2029. Further observational data discounted this, and the 2036 date was set.
The chances that the asteroid will strike the Earth is put as 1:250,000
How many days are on asteroid belt in a year?
If you mean an earth year, then there are 365.
If you mean the time for an object in the asteroid belt to go around the sun,
it could be anything between 690 days and 11.8 earth years, depending on
exactly where you are between the orbits of Mars and Jupiter.
What are the names of asteroids that have hit earth?
While we know that asteroids have hit the Earth in the distant past, they were never named. To the extent that we have names for them, they are named for the craters they create where they hit, such as the Chixulub event that killed off the dinosaurs 65 million years ago.
do you mean asteroid?
an asteroid are the thousands of lumpy rocksthat circle around the sun in a large band between Mars and Jupiter. the biggest asteroid, Ceres is approx. 640km across. most asteroids are much much smaller. over 5000 asteroids have been identified by astronomers so far.
What was noteworthy about Asteroid strikes in Sudan in 2008?
The asteroid that struck Sudan in 2008 is significant because it was the first time an asteroid was detected and tracked before impact. It exploded above the Nubian desert and created thousands of meteorites, with the fragments providing valuable scientific information about the composition of such objects.
There is a large asteroid belt between which two planets?
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.
How long is a year on vesta the asteroid?
The asteroid belt is a region about a hundred million miles across, so there's no such thing as "a year on the asteroid belt". Any given asteroid in the core region of the belt could have an orbital period from a little under 3 up to nearly 6 years.
1 Ceres, for example, has an orbital period of a bit under 1682 days (4.6 years).
What are the odds of successfully navigating an asteroid field?
The odds of successfully navigating an asteroid field depend on various factors, such as the density of the field, the size of the asteroids, and the skills of the pilot. In general, navigating an asteroid field is extremely challenging and dangerous due to the potential for collisions with the asteroids. It's often considered risky and should be avoided whenever possible.
When was the last time a large rock from space or an asteroid hit earth?
The Earth has been hit by asteroids many times before and will be in the future.
The most well-known impact was about 65 million years ago, which wiped out the dinosaurs.
The last major impact was in 1908, the Tunguska event, which occurred in Siberia, Russia.
The Earth's atmosphere is "hit" by an asteroid with as much power as the Hiroshima atomic bomb about once a year but they are annihilated because of the heat and pressure.
Note: This answer is about asteroids, not meteoroids or comets.
Why didn't the asteroids form a planet?
A solar system starts out as a star surrounded by a "proto-planetary disk", a huge flat disk of gas, dust and rock, all attracted to the stars large gravity.
Over time, large objects in the disk attract dust and rock to themselves. They get bigger and bigger and... eventually you get a planet. Objects that attracted mostly gas formed gas giants like Jupiter and Saturn, objects that attracted mostly rock formed rocky planets like Earth and Mars.
Asteroids are basically what was left over, what didn't form planets. The asteroid belt between Mars and Jupiter is actually the remains of a "proto-planet" that didn't quite stick together in the formation of the solar system. It got ripped apart by Jupiter's gravity.
How are planets asteroids and comets orbits alike?
Rock and/or metallic solids - virtually 100% for a typical asteroid, and a goodly amount (some astronomers think more than half) in a cometary nucleus. They also share in common the fact that they orbit around the sun.
Which planets did they find an asteroid belt between?
The asteroid belt is found between the orbits of Mars and Jupiter.
What are the asteroids the follow and precede Jupiter in a gravitational well called?
The asteroids that follow Jupiter in its orbit are called Trojans, while the ones that precede Jupiter are referred to as Greeks. These asteroids orbit the Sun in two distinct swarms located around the Lagrange points of Jupiter's orbit.
Which planets are known as the rocky planets?
Here in our own solar system, the four inner planets are rocky; Mercury, Venus, Earth and Mars.
Beyond our solar system, we've detected over a thousand planets, but we're unable to discover any details about the surface. As far away as they are, I'm still amazed that we can discover that they exist!
How big does an asteroid have to be to survive burn up on entry through the atmosphere?
An asteroid typically needs to be at least 25 meters in diameter to survive entry through the Earth's atmosphere and hit the surface. Smaller asteroids usually burn up and disintegrate due to the intense heat and pressure generated during atmospheric entry.
Which two planets does Main Asteroid Belt go between?
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.
What effect did the asteroid have 0n earth?
The asteroid impact caused mass extinction of the dinosaurs and approximately 75% of all species on Earth. It resulted in wildfires, tsunamis, and a dramatic shift in the Earth's climate due to dust and debris blocking sunlight, leading to a long period of darkness and cold known as the "impact winter."
Why are asteroids only found between Mars and Jupiter?
Asteroids are found mainly between Mars and Jupiter in the region known as the asteroid belt because the gravitational pull of Jupiter prevented the material in this region from forming a planet. Instead, the leftover debris accumulated to form asteroids. The gravitational influence of Jupiter's massive size helped to scatter the material and prevent a planet from forming in this region.
