Apocalyptic Devil Comet Explodes and Hurtles Towards Sun and Earth – Earth.com

A colossal comet, three times larger than Mount Everest and known as 12P/Pons-Brooks, has recently undergone a powerful explosive event as it journeys towards Earth. This impressive ‘cold volcano’ comet, with a diameter of approximately 18 miles, is notorious for its violent ejections of ice and gas, leaving behind a trail that resembles devil horns and creating a mesmerizing spectacle in space.

Discovered in 1812, 12P/Pons-Brooks is set to make its closest approach to Earth in June 2024. Despite its proximity, there is no danger posed to our planet. During this pass, the comet will be visible as a faint, star-like object with a distinctive tail, even visible to the naked eye.

Volcanic behavior

Comets like 12P/Pons-Brooks are composed of an icy nucleus surrounded by a coma, which is a cloud of gas and dust. Its classification as a cryovolcanic comet indicates that it exhibits volcanic behavior.

However, instead of ejecting molten rock, it releases gases and ice, particularly when nearing the sun. As the comet approaches the sun, the increase in temperature and pressure leads to explosive releases of nitrogen and carbon monoxide, pushing out icy fragments from the nucleus.

Recent outburst

Eliot Herman, an amateur Arizona-based astronomer, witnessed a significant brightening of the comet on October 31, signaling a recent burst of cryovolcanic activity. This recent outburst is the second in a month and the third since July, reinforcing its reputation as the “devil comet.” The comet’s eerie appearance, with its devil-like horns, has garnered widespread media attention.

Journey around the sun

12P/Pons-Brooks orbits the sun, guided by its gravitational pull, and completes this journey in 71 years. This period is relatively short compared to most comets, which may take thousands of years to orbit the sun. Comets like 12P/Pons-Brooks have highly elliptical orbits, bringing them close to the sun at perihelion and far away at aphelion. As they approach the sun, their speed increases significantly.

At present, the comet is hurtling towards the sun at over 40,000 miles per hour. This speed is expected to increase to over 100,000 miles per hour as it approaches its perihelion. Its closest encounter with the sun will occur on April 21 next year, followed by a close approach to Earth on June 2. After this encounter, the comet will be propelled back to the outer solar system, not returning until 2095.

Cryovolcanic comets

Cryovolcanism is a type of volcanic activity that occurs at extremely low temperatures on icy moons and other celestial bodies. Unlike the typical molten rock volcanism we see on Earth, cryovolcanism involves the eruption of volatile substances such as water, ammonia, or methane – compounds that are usually in a frozen solid state at the low temperatures found on these bodies.

Cryovolcanic comets, specifically, are comets that exhibit such activity. As a comet approaches the sun, the increase in temperature can cause its icy components to sublimate (transition from solid to gas), leading to geysers or eruptions of gas and dust from the comet’s surface. This activity is reminiscent of volcanic eruptions.

The expelled materials can form a coma (a temporary atmosphere) and sometimes a tail, which are characteristic features of comets. Cryovolcanism is one of the processes that shape the surfaces of comets. It is a key phenomenon that missions such as NASA’s Deep Impact and ESA’s Rosetta have studied to understand the composition and behavior of these celestial objects.

More about comets

Comets are celestial wanderers that captivate the imagination with their stunning tails and ancient origins. They are composed of ice, rock, and cosmic dust, remnants from the formation of our solar system over 4.6 billion years ago. As they orbit the Sun, these “dirty snowballs” thaw and release gases and dust, creating their distinctive glowing comas and tails.

Anatomy of a comet

At the heart of a comet is the nucleus, a solid core typically less than 30 kilometers across. It’s surrounded by a diffuse cloud of gas and dust called the coma when the comet is near the Sun. The coma can grow to be larger than planets. The tail, which can stretch for millions of kilometers, always points away from the Sun due to the solar wind’s force and radiation pressure.

Orbit of comets

Comets have highly elliptical orbits, often bringing them very close to the Sun, a point called perihelion, and then slinging them far back into the depths of space, to their aphelion. There are two types of comets based on their orbital periods: short-period comets, like Halley’s Comet, take less than 200 years to orbit the Sun, while long-period comets can take much longer, sometimes thousands of years.

Comets and Earth

Comets have had a significant impact on Earth in several ways. Historically, their appearances in the sky have been recorded and thought to be omens. Scientifically, it is hypothesized that comets may have delivered water and organic compounds to Earth, contributing to the emergence of life.

Famous comets

Throughout history, certain comets have stood out. Halley’s Comet, with its predictable returns every 76 years, is perhaps the most famous. Comet Shoemaker-Levy 9 became renowned for its spectacular collision with Jupiter in 1994, giving astronomers a front-row seat to cosmic impacts.

Observing comets

Comets can be a delight for amateur astronomers. When a comet is predicted to pass close to Earth, it can often be seen with the naked eye. Otherwise, binoculars or a small telescope can reveal the comet’s central nucleus and its gaseous coma.

Future of comet exploration

Space agencies have sent several missions to comets, such as ESA’s Rosetta, which orbited Comet 67P/Churyumov-Gerasimenko and deployed a lander to its surface. Future missions aim to learn more about the composition of comets and what they can tell us about the early solar system.

In summary, comets are more than just celestial beauty; they are time capsules holding clues to our solar system’s history. As they continue to be studied, they may reveal more secrets about the origins of Earth and other planets, and perhaps even life itself.

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