When did Harley s comet hit the Earth?

Halley's comet is a large comet that has been confirmed to be out of time. In 1705, the famous English astronomer Halley predicted that the comet seen in 1531, 1607 and 1682 would return in 1758 based on Newton's latest laws of motion, and although Halley died in 1742, the comet returned in 1759 as scheduled. In honor of Halley, people named the comet after him.

The average revolution period of the Harley is 76 years, but you can't use 1986 plus a few 76 years to get its exact regression date. The gravitational pull of the main planet causes it to change its cycles, falling into one cycle after another. Non-gravitational effects (evaporation when close to the Sun) also play an important role in making it change periodically.

Between 239 BC and 1986 AD, the orbital cycle varied from year) to year (451 and 1066).

Halley's comet's nucleus is approximately 16x8x8 kilometers. It is almost unique among many comets, large, active, and has a well-defined orbit. This makes it easier to aim at the Giotto Flying Vehicle (ESA-owned).

But it doesn't represent what other comets have in common.

Halley's Comet will return to the inner solar system in 2061.

More than 210 years later, due to the influence of the Earth's gravity, plus other factors in space, such as rays, solar wind, etc., will affect its orbit closer to the Earth, so it will collide, but we cannot see it.

Halley's comet enters perigee every 76 years or so, and it has never hit the Earth and will never do!

Take a look at the comet impact from July 16 to 22, 1994.

Due to the small size of the earth! There are other big planets protecting it! So don't crash into the earth!

There is no other reason! It's not going to crash into the earth!

The chances of it hitting it are slim because there is a very large Jupiter next to Earth.

It is unlikely to hit the Earth, and it is also Jupiter that will collide.

In the 10s of the 20th century (the exact time is not clear), the scientist ** Halley's comet hit the earth, which caused panic at that time, but in the end the comet just swept over the earth with its wise tail and had almost no effect. Harley wants to get closer to Earth, I don't know how many years will be in the future

I haven't heard of a legend about hitting the earth!

Halley's Comet cannot hit the Earth, its orbital inclination is in the opposite direction of rotation, and it has an inclination angle of 18° to the ecliptic plane), so in space, Halley's Comet orbit and the Earth's orbit do not intersect. If you want to hit the Earth, you must first place its orbital lift-lift node near the Earth's orbit, and then return to the Earth's ascending node exactly past Halley's Comet. How difficult this probability is, just look at the transit of Venus, you must know that the orbital inclination of Venus is only more than one degree, and it is conjunct once every two years, and the transit of Venus is also a celestial phenomenon that meets twice in 117 years.

Halley's Comet has to break the perihelion ecliptic longitude of dozens of degrees to achieve the intersection of its orbit with the Earth (perihelion amplitude, near ascending ecliptic, which cannot be done in hundreds of thousands of years.

The lifespan of a comet is not infinitely long, and every time it approaches the earth, it will lose a considerable amount of material, but fortunately, Halley's comet has a better base, and the diameter of the comet's nucleus is 10 kilometers, which is enough to toss thousands of times. However, compared to the time to correct the orbital parameters, it is really a drop in the ocean.

In the end, the comet's orbit cannot be accurately calculated, first of all, the perturbations of other planets, which is easy to do, astronomers will calculate. But what's even more troublesome is that when it gets close to the sun, it throws a considerable amount of material, which is like installing an engine that is constantly changing its orbit. If you apply the current number of orbital roots to extrapolate the historical record, you will find that Halley's Comet was still near its original location at the time of the return recorded in the "Left Biography" in 659 BC.

Therefore, according to the previous regression, the next return to perihelion is calculated on July 28, 2061, but it is basically impossible to cross perihelion at this point in time next time.

Comets visible to the naked eye occur almost once a year, and comets visible in cities occur almost once in ten years. Hundreds of comets are discovered every year, but it's hard to see. It would be a shame to expect a particular comet that does not orbit the ecliptic to hit the Earth.

The tracks don't coincide, so they don't collide. But comets have long comet tails, and sometimes Earth encounters Halley's comet tails. However, the density of the comet tail is very low, and the earth passes through the comet tail like a swallow flying through the smoke of the cook, and nothing happens.

When Halley's comet returned in 1910, the Earth had passed through its comet. However, the lack of knowledge about comets at the time caused a great deal of panic, but in fact there was no effect.

Not at the moment, and even the chances of a derailed collision are very small.

No, it's going to be burned before it arrives.

Halley's Comet and planets hitting the Earth, how many times can you experience it in your life?

Halley's Comet last returned in 1986, and the next time should be in 2062, guess for yourself! [Because the most famous comet, its orbital period around the Sun is 76 years, so it may be 2062].

Halley's Comet returns approximately every 76 years, and Halley's Comet will return to the inner solar system in 2061.

Whether Halley's Comet will be, I don't know, but there are many comets that have the possibility of colliding with the Earth (but the probability is very small, don't worry), and the reason is the same, that is, the Earth's orbit is circular, and the comet's orbit is elliptical, so there is the possibility of crossing (but don't forget that space is three-dimensional, not every comet will intersect with the Earth's orbit), so there is a possibility of reaching a certain intersection at the same time, but these chances are very small!

Because its orbit intersects with the Earth, if the Earth and Halley's Comet move at the same time to the orbital intersection point, it will collide.

Halley's Comet affects the Earth's environment.

Whether or not Halley's Comet collides with Earth has always been a hot topic.

In the sense of not strictly speaking.

In the early 20th century, it was predicted that the 1910 Halley's comet moon would collide with the Earth and destroy the Earth, causing panic in Europe and the Americas, and some people even had fun in time to spend all their savings before the Day of Words. Of course, the Chinese are still very calm, you should be able to understand it, two years after the reunification, the ignorant were fearless, at that time China was in dire straits, and there was no interest in such a noble subject as astronomy. But when the prophecy day came, Halley's Comet was"Bump"The earth, but just the tail swept over the earth, and the gas of the tail was so thin that people couldn't feel it at all, and Halley's Comet just waved his hand and left without taking a human with him.

Probably not, after all, the gravitational pull of the Earth is too small at this distance, and Jupiter is still possible.

Halley's Comet returns on time every 76 years or so, and Earth has 76 laps.