{"id":220765,"date":"2024-04-01T10:28:18","date_gmt":"2024-04-01T14:28:18","guid":{"rendered":"http:\/\/stateofthenation.co\/?p=220765"},"modified":"2024-04-01T10:29:49","modified_gmt":"2024-04-01T14:29:49","slug":"the-devil-comet-cometh","status":"publish","type":"post","link":"https:\/\/stateofthenation.co\/?p=220765","title":{"rendered":"

THE DEVIL COMET COMETH<\/span><\/b><\/h1>"},"content":{"rendered":"

\"\"<\/p>\n

Cryovolcanic horned “Mother of Dragons” comet is now visible from Earth<\/h1>\n

ByAndrei Ionescu
\nEarth.com staff writer<\/p>\n

Comet 12P\/Pons-Brooks \u2013 also known as the \u201cdevil comet\u201d and the \u201cMother of Dragons\u201d comet \u2013 is currently visible in the night skies of the northern hemisphere, providing a unique spectacle for both amateur stargazers and professional astronomers.<\/p>\n

This Halley-type comet, which orbits the Sun every 71 years and has a nucleus about 30 kilometers in diameter, is known for its\u00a0impressive outbursts<\/a>\u00a0of gas and dust during its voyages through the inner solar system.<\/p>\n

Comet 12P\/Pons-Brooks<\/h2>\n

The comet is known as the devil comet due to its distinct \u201chorned\u201d appearance. However, a more contemporary cultural nod has been given to its connection with the kappa-Draconids, a relatively modest annual meteor shower active from late November into December.<\/p>\n

Similar to other comets,\u00a012P\/Pons-Brooks<\/a>\u00a0is composed of a mixture of ice, dust, and rocky material. As it approaches the Sun, the comet undergoes a transformation, with the ice within transitioning from solid to gas.<\/p>\n

This process propels gas and dust from the comet\u2019s surface and forms an expansive cloud and a distinctive tail. This tail, shaped and driven by\u00a0solar winds<\/a>, serves as a visible marker of the comet\u2019s path through space.<\/p>\n

What are cryovolcanic comets?<\/h2>\n

Cryovolcanic comets are a fascinating class of celestial objects that exhibit unique geological activity. These comets not only contain the usual mix of ice, dust, and rock but also feature cryovolcanoes \u2014 volcanoes that erupt with volatile materials such as water, ammonia, or methane instead of molten rock.<\/p>\n

Cryovolcanoes form on comets when internal heat builds up, causing the volatile materials within the comet to vaporize and expand. This increased pressure eventually leads to the rupture of the comet\u2019s surface, allowing the gases and liquids to escape in a dramatic eruption.<\/p>\n

Significance of cryovolcanic activity<\/h3>\n

The study of cryovolcanic comets provides valuable insights into the composition and internal structure of these icy bodies.<\/p>\n

By analyzing the materials ejected during cryovolcanic eruptions, scientists gain a better understanding of the conditions that exist within comets and the role they play in the formation and evolution of the solar system.<\/p>\n

Notable examples<\/h3>\n

Besides 12P\/Pons-Brooks, one of the most well-known examples of a cryovolcanic comet is\u00a029P\/Schwassmann-Wachmann 1<\/a>. This comet exhibits frequent outbursts, which are believed to be caused by cryovolcanic activity.<\/p>\n

Another example is\u00a0Comet 67P\/Churyumov-Gerasimenko<\/a>, which was visited by the European Space Agency\u2019s Rosetta spacecraft. Rosetta\u2019s observations revealed evidence of cryovolcanic activity on the comet\u2019s surface.<\/p>\n

As we continue to explore and study these captivating objects, cryovolcanic comets will undoubtedly shed more light on the dynamic processes that shape our solar system.<\/p>\n

When will devil comet 12P\/Pons-Brooks be visible?<\/h2>\n

12P\/Pons-Brooks is most visible in late March and early April. Situated above the western horizon in the post-dusk hours, the comet\u2019s visibility is subject to its activity level and proximity to Earth.<\/p>\n

While at times it may shine brightly, at others, it could be barely perceptible. The devil comet will reach its closest point to Earth in June 2024, but will no longer be visible from the northern hemisphere.<\/p>\n

Two legendary astronomers<\/h2>\n

The comet\u2019s name carries the legacy of two legendary figures, Jean-Louis Pons and William R. Brooks, who discovered an impressive number of comets.<\/p>\n

Jean-Louis Pons<\/h3>\n

Pons, a French astronomer active from 1761 to 1831, is remembered for his remarkable contributions to astronomy, most notably for discovering 37 comets between 1801 and 1827 using equipment he crafted himself.<\/p>\n

This achievement stands as an unmatched record to this day. One notable instance of his comet discoveries occurred on July 12, 1812, when he identified a faint celestial body lacking the characteristic comet tail.<\/p>\n

Over the following month, this body brightened significantly, developing a visible tail by August 15 of that year, marking its peak visibility. The comet\u2019s orbit was calculated from Pons\u2019 meticulous observations, with astronomers estimating its solar orbit period to be between 65 and 75 years.<\/p>\n

William R. Brooks<\/h3>\n

William R. Brooks, an Anglo-American astronomer with an impressive record of 27 comet discoveries, inadvertently confirmed Pons\u2019 earlier observations when he observed the same comet during its return voyage through the inner solar system on September 2, 1883.<\/p>\n

Initially believed to be a new discovery, it was soon recognized as the comet previously observed by Pons 71 years before.<\/p>\n

Vivid outbursts of gas and dust<\/h2>\n

The devil comet became particularly famous due to its vivid outbursts of gas and dust during close approaches to the Sun, which were visible in the years 1883, 1954, and 2023.<\/p>\n

Historical accounts of bright celestial objects seen in China in 1385 and Italy in 1457 are thought to be earlier sightings of this comet, further cementing its place in the annals of astronomical observation.<\/p>\n

Ancient cosmic icebergs<\/h2>\n

Beyond their immediate impressive appearance, comets like\u00a012P\/Pons-Brooks<\/a>\u00a0are of significant scientific interest.<\/p>\n

These \u201cancient cosmic icebergs\u201d are remnants from the dawn of the solar system, their compositions and trajectories offering clues about the early solar system\u2019s structure.<\/p>\n

The processes by which comets are drawn toward the inner\u00a0planets<\/a>\u00a0from beyond Neptune\u2019s orbit highlight their dynamic nature and the gravitational forces at play within our cosmic neighborhood.<\/p>\n

Characteristic tails of comets<\/h2>\n

The characteristic tails of comets, resulting from the sublimation of ice to gas under the Sun\u2019s warmth, are perhaps their most defining feature.<\/p>\n

These tails, comprising both dust and ionized gas, are not just spectacular to observe but are integral to our understanding of cometary behavior and the impact of comets on Earth\u2019s environment, including the potential delivery of water and organic materials to our planet.<\/p>\n

Observation and study of comets<\/h2>\n

As 12P\/Pons-Brooks remains visible from Earth and continues its journey through the inner solar system, the devil comet serves as a reminder of the vast, dynamic universe of which we are a small part.<\/p>\n

It\u00a0also underscores the importance of continued observation and study of comets, as they hold the key to understanding our place in the cosmos and the fundamental processes that have shaped our solar system.<\/p>\n

ESA missions to unlock the secrets of comets<\/h2>\n

The\u00a0European Space Agency<\/a>\u00a0(ESA) has long recognized the scientific and exploratory value of these ancient celestial wanderers.<\/p>\n

Beyond comet 12P\/Pons-Brooks, ESA has embarked on several missions to unlock the secrets of comets and\u00a0asteroids<\/a>.<\/p>\n

The goal is to shed light on the early solar system\u2019s formation, the origins of Earth\u2019s water, and the potential risks these space rocks pose to our planet. Some of these missions include:<\/p>\n

Giotto Mission<\/h3>\n

Launched in 1986, Giotto was ESA\u2019s pioneering deep-space mission, designed to approach comet Halley and provide the first close-up images of a comet\u2019s nucleus.<\/p>\n

Giotto\u2019s journey revealed significant findings, including the detection of organic material on Halley\u2019s comet, hinting at the complex chemistry of the early solar system.<\/p>\n

The mission\u2019s success didn\u2019t end with Halley; in 1992, Giotto was redirected to approach comet Grigg-Skjellerup, passing within just 200 kilometers of its nucleus and further enhancing our understanding of cometary composition and behavior.<\/p>\n

Rosetta Mission<\/h3>\n

Rosetta is considered to be ESA\u2019s most famous comet mission. Arriving near comet 67P\/Churyumov-Gerasimenko in 2014, Rosetta became the first spacecraft to orbit a comet and closely follow its journey around the Sun.<\/p>\n

The mission\u2019s Philae lander achieved the first-ever landing on a comet\u2019s surface, providing invaluable data on the comet\u2019s composition and activity. Rosetta\u2019s extensive study of 67P has offered profound insights into the nature of comets and their role in the solar system\u2019s history.<\/p>\n

Hera Mission<\/h3>\n

Looking ahead, the Hera mission, set to launch in the near future, is part of a collaborative effort with NASA\u2019s DART mission to test asteroid deflection techniques. Hera will closely examine the aftermath of DART\u2019s impact on the asteroid Dimorphos, aiming to turn this experiment into a viable\u00a0planetary defense<\/a>\u00a0strategy.<\/p>\n

By studying the altered orbit and surface of Dimorphos, Hera will play a critical role in preparing humanity to defend itself against potential asteroid threats.<\/p>\n

Comet Interceptor<\/h3>\n

ESA\u2019s forward-looking Comet Interceptor mission, set to launch in 2029, seeks to capture a pristine comet entering the inner solar system for the first time. This mission aims to study a comet that has been minimally altered by the Sun\u2019s heat, potentially offering a direct glimpse into the materials and conditions of the early solar system.<\/p>\n

By targeting such a \u2018pristine\u2019 comet, Comet Interceptor hopes to build on the legacy of Giotto and Rosetta, providing new insights into the origins and evolution of our Solar System.<\/p>\n

Special Mention \u2013 SOHO<\/h3>\n

While primarily focused on solar observation, the ESA\/NASA Solar Heliospheric Observatory (SOHO) has become an unlikely comet hunter, discovering thousands of Sun-grazing comets on their final approach to the Sun. SOHO\u2019s unexpected role in comet discovery highlights the dynamic and interconnected nature of our solar system\u2019s celestial bodies.<\/p>\n

___
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