answersLogoWhite

0

Asteroids

Asteroids, or planetoids, are rocks larger than meteorites but smaller than planets that orbit around the Sun.

1,071 Questions

Why are asteroids observed at the distances of the gaps in the asteroid belt?

A gap is located at an average orbital distance, and asteroid orbits often have large eccentricities.

Edit:

These are the "Kirkwood gaps" and they are caused by the effect of Jupiter's gravity on the asteroids. I've not deleted the previous answer, but I don't think

it helps much.

The gaps are in the distribution of the values of the semi-major axes of the

orbits of asteroids rather than particular places in space.

So orbital eccentricities can't be the explanation.

I think it's simply because asteroids stray into the Kirkwood gaps under various gravitational forces. But these orbits are not stable and asteroids will tend to be cleared away again, eventually.

Did a spacecraft ever visited an asteroid or a comet?

Yes, spacecrafts have visited both asteroids and comets. Some notable missions include NASA's OSIRIS-REx which visited the asteroid Bennu and JAXA's Hayabusa2 mission which visited the asteroid Ryugu. Additionally, the European Space Agency's Rosetta mission visited and landed on the comet 67P/Churyumov–Gerasimenko.

As a astoroid ever hit us?

Yes, asteroids have collided with Earth in the past, resulting in impact craters. However, efforts are underway to improve detection and monitoring of potentially hazardous asteroids to mitigate the risk of future impacts.

What size comet could destroy earth?

Answer 1:

The comet would have to be the size of Mars.

Answer 2:

To literally destroy the entire planet of Earth, breaking it up into fragments, yes, the above answer may be true.

However, any asteroid or comet of 1 kilometer diameter or more would give us serious troubles. And at 5 kilometers wide, would certainly end our civilization, if not quite us. Past that, we would all die, as would all life. Well, most all life bigger than microbes.

Why did and asteroid hit the diosaurs?

The dinosaurs didn't survive because when the meteor hit, there was a bunch of dust and soil that rose out of the earth, causing the sun to block out. All of everything died because the sun wasn't reaching the earth. First the plants died, then the plant eaters, then the meat eaters, see? It totally destroyed the web of life.

Has a Asteroid ever hit Uranus?

There is no definitive evidence of an asteroid hitting Uranus. However, the planet's moons may have been impacted by asteroids in the past, as seen by the presence of impact craters on their surfaces.

Most meteorites collected on Earth are of the rocky primitive variety although most asteroids are of the carbon-rich variety?

Meteorites that fall to Earth are more likely to be rocky and primitive because they can survive the intense heat of entry through the atmosphere. In contrast, most asteroids are carbon-rich because they have not undergone significant heating or melting processes, preserving their original composition. This difference in composition between meteorites and asteroids is largely due to the varying conditions in space that each has experienced.

What would happen if a 10 mile wide asteroid impacted earth?

It would be devastating. A shockwave would blow down everything in about a several hundred mile radius from the impact and a small firestorm would cover a large portion of the earth. Chunks of the asteroid would impact thousands of miles away causing large forest fires. A nuclear winter would occur from all the dust and debris kicked up from the blast and extinguish all plant life. Without plants, herbivores die, and without herbivores, most carnivores would die. The food chain would collapse entirely and there would be worldwide riots as millions die every day.

How Long Till The Next Asteroid Hits Earth?

Thousands of asteroids are being observed; some may come quite close to Earth within the next few hundred years. Right now, no specific date is known, for a specific asteroid to hit Earth.

Thousands of asteroids are being observed; some may come quite close to Earth within the next few hundred years. Right now, no specific date is known, for a specific asteroid to hit Earth.

Thousands of asteroids are being observed; some may come quite close to Earth within the next few hundred years. Right now, no specific date is known, for a specific asteroid to hit Earth.

Thousands of asteroids are being observed; some may come quite close to Earth within the next few hundred years. Right now, no specific date is known, for a specific asteroid to hit Earth.

Can an asteroid go through the earth?

No, an asteroid cannot physically pass through the Earth due to its solid structure. If an asteroid were to collide with the Earth, it would impact the surface, causing significant damage depending on its size and speed.

How can comets and asteroids affect earth?

Comets and asteroids can potentially impact Earth, causing damage due to the energy released upon impact. They can also bring valuable resources to our planet, such as water and metals. Additionally, dust and gas released by comets passing close to Earth can affect our atmosphere and climate.

Why is there debate over how dinosaurs became extinct?

  • The Paleozoic, Mesozoic, and Cenozoic eras comprise the most recent 10% of Earth's geologic history.
  • The Paleozoic era is marked by seven distinct periods. These consisted of dramatic climate changes, multiple life explosions, shifting continents, and new mountain ranges.
  • A mass extinction at the end of the Paleozoic era left only 5% of the species on Earth, which made way for the age of the dinosaurs (and lasted 150 million years).
  • The Mesozoic era had a warm, stable climate, leading to the development of rain forests and good conditions for dinosaurs.
  • The supercontinent Pangaea broke apart during the Mesozoic era. Over millions of years, continents assumed their present-day positions.
  • The first mammals appeared during the Mesozoic era.
  • Scientists think the extinction of the dinosaurs was most likely caused by several large events such as volcanism and impact from a comet or asteroid

Will wheather change if an asteroid hits earth?

Yes, if a large enough asteroid were to hit Earth, it could lead to dramatic changes in the weather. The impact could release large amounts of dust and debris into the atmosphere, blocking sunlight and potentially causing a "nuclear winter" effect that could drastically alter global weather patterns.

Are asteroids satellites?

The term, "satellite", applies to virtually every body in the celestial heavens - in other words, nearly everything in space is a satellite.

Any body that revolves around or orbts another is, technically, a satellite. The earth is a satellite to the sun. The moon is the earth's satellite. M

Most of the asteroids revolve around the sun, and therefore, are technically, its satellites.

Does the asteroid belt have an axis?

No, the asteroid belt does not have a single axis like a planet or moon. It is a region of space between Mars and Jupiter where numerous asteroids orbit the Sun in a wide range of paths and inclinations.

How did scientists figure out that Pluto was not just another star?

Pluto was first discovered in 1930 by Clyde W. Tombaugh at the Lowell Observatory in Flagstaff Arizona. Astronomers had long predicted that there would be a ninth planet inthe Solar System, which they called Planet X. Only 22 at the time, Tombaugh was given the laborious task of comparing photographic plates. These were two images of a region of the sky, taken two weeks apart. Any moving object, like an asteroid, comet or planet, would appear to jump from one photograph to the next.

After a year of observations, Tombaugh finally discovered an object in the right orbit, and declared that he had discovered Planet X. Because they had discovered it, the Lowell team were allowed to name it. They settled on Pluto, a name suggested by an 11-year old school girl in Oxford, England (no, it wasn't named after the Disney character, but the Roman god of the underworld).

The Solar System now had 9 planets.

Astronomers weren't sure about Pluto's mass until the discovery of its largest Moon, Charon, in 1978. And by knowing its mass (0.0021 Earths), they could more accurately gauge its size. The most accurate measurement currently gives the size of Pluto at 2,400 km (1,500 miles) across. Although this is small, Mercury is only 4,880 km (3,032 miles) across. Pluto is tiny, but it was considered larger than anything else past the orbit of Neptune.

Over the last few decades, powerful new ground and space-based observatories have completely changed previous understanding of the outer Solar System. Instead of being the only planet in its region, like the rest of the Solar System, Pluto and its moons are now known to be just a large example of a collection of objects called the Kuiper Belt. This region extends from the orbit of Neptune out to 55 astronomical units (55 times the distance of the Earth to the Sun).

Astronomers estimate that there are at least 70,000 icy objects, with the same composition as Pluto, that measure 100 km across or more in the Kuiper Belt. And according to the new rules, Pluto is not a planet. It's just another Kuiper Belt object.

What is the asteroid that is the size of Texas's name?

Unless you are thinking of the movie Armageddon, the asteroid that was reported in the media with a size of Texas is Apophis.

However, as in most cases, the media managed to mislead the public, especially as the observed diameter is a mere 450 meters - much smaller than Texas, unless something has happen in the US that I'm not aware of!!!

It seems that the original reports were misleading because scientists reported that it would devastate an area the size of Texas a slight difference between the amount of "collateral" damage and the original size of the object.

Does Uranus have an asteroid belt?

Saturn isn't located in the asteroid belt. In the solar system, you have the sun, mercury, venus, earth, mars, the asteroid belt (separating terrestrial and jovian planets) then jupiter, saturn, uranus, and finally neptune. Pluto is not a planet.

What film is about a Texas sized asteroid headed for Earth?

The term asteroid was used for the TV movie appropriately called "Asteroid" (1997).

Both the Bruce Willis movie "Armageddon" (1998) and the earlier, critically-panned "Meteor" (1970) used the term meteor(technically meteoroid) but both objects were asteroid-sized.

The Tea Leoni movie "Deep Impact" (1998), and the TV movie "A Fire in The Sky" (Richard Crenna, 1978) had comets hitting the Earth.

Which is bigger meteoroids or asteroids?

No. A meteoroid is a sand- to boulder-sized particle of debris in the Solar System, while asteroids are small Solar System bodies in orbit around the Sun; they are smaller than planets but larger than meteoroids.

Where do asteroids and comets come from?

Asteroids are minor planets, especially those of the Inner Solar System. However, between the orbital paths of Mars and Jupiter lie a region known as the asteroid belt. Many asteroids come from there, but most of them stay there.

Short-period comets originate from the Kuiper Belt, just outside the orbit of Neptune, while long-period comets are thought to originate in the Oort cloud.

What is the lifespan of an asteroid?

The lifespan of an asteroid can vary greatly depending on its size and orbit. Some asteroids may exist for millions or even billions of years, while others may break apart or collide with other objects in space relatively quickly.

What dwarf planet is located IN the asteroid belt?

Cerise is the planet located in the asteroid belt which the asteroid belt is dividing the

terrestrial and Jovian planets. thank you to find out more please contact www. tags.com/want to be a scientist.com

thank you all for asking that question we are giving away free sale start today

The lines of magnetic force generated by the fluid motions of the earth's core results in the formation of what?

A.) magnetic north and south poles

B.) north magnetic pole

C.) north pole

D.) north and south poles

E.) south magnetic pole

these are the options ^^

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.