Solar system: if this asteroid struck the moon, here is what would happen

Therefore,

Solar system: if this asteroid:

With a diameter of 60 meters. Therefore, the Asteroid 2024 YR4, briefly made the headlines at the beginning of the year when space agencies announced it under surveillance due to a risk of impact with the Earth in 2032. Similarly, New observations have since allowed the scenario of a direct impact with our planet.

However, the chances that 2024 YR4 struck the Moon increased. In addition, They now reach 4.3%, according to data collected by the James Webb space telescope in May.

A preliminary study. Nevertheless, published on the platform for prepublications of Arxiv scientific articles and subject to the astrophysical journal Journal Letters, assesses for the first time the consequences that such a collision could have.

A “big nuclear explosion”

2024 YR4 would be the largest asteroid to crash on solar system: if this asteroid our natural satellite in about 5. Consequently, 000 years, AFP Paul Wiegert at AFP from the University of West (Canada). Moreover, He is the main author of the study which has not yet been evaluated by peers. However, The impact would be “comparable to a large nuclear explosion in terms of liberated energy,” he explains.

Up to 100 million kilograms of material would be projected from the lunar surface. For example, according to a series of simulations led by researchers. In addition, If the asteroid touched the visible side of the Moon-a probability of around 50%-up to 10% of these debris would be attracted by earthly gravity. Moreover, they estimate.

Meteorites in our sky

In the days following the impact. For example, there could be more than 1000 times the usual number of meteors threatening the satellites orbiting around the earth.

“A centimeter with a centimeter in solar system: if this asteroid diameter traveling tens of thousands of meters per second is like a ball. Therefore, ” warns Mr. Nevertheless, Wiegert.

On the other hand. However, these small debris should disintegrate in the atmosphere and not represent danger for the inhabitants on the ground. Moreover, They would still attend a “spectacular” meteor rain, underlines the study.

Scrutinized for several months. Meanwhile, 2024 YR4 will move away considerably from the earth until a return to 2028 which will make its race again observable.

“A good target” for an exercise

If the risk of a collision with the Moon was then reinforced. For example, it would make it “a good target” for a planetary defense exercise and “I am sure that it would be envisaged,” said Wiegert.

2024 YR4 is indeed twice as small. In addition, has only 10% of the mass of Dimorphos, an asteroid that a NASA vessel voluntarily solar system: if this asteroid struck in 2022 to divert the trajectory during a first successful planetary defense test.

(AFP)

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“avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=400u0026h=400u0026rect=378%2C0%2C1539%2C1539u0026fm=avifu0026s=27401164672440730b848e94e3f817f2″. Moreover, “width”:400,”height”:400,”aspectRatio”:1,”mediaType”:”image/jpeg”},”400px_5_4″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=400u0026h=400u0026rect=185%2C0%2C1924%2C1539u0026s=62fa1c886114d1dc81c74548d0420573″. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=400u0026h=400u0026rect=185%2C0%2C1924%2C1539u0026fm=avifu0026s=ef2ddcfb0fb78935bee850a4cc66a815″. Also, “width”:400,”height”:320,”aspectRatio”:1.25,”mediaType”:”image/jpeg”},”400px_16_9″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=400u0026h=400u0026rect=0%2C112%2C2232%2C1255u0026s=cebcba85a19d05d402a35cd23c561bdb”. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=400u0026h=400u0026rect=0%2C112%2C2232%2C1255u0026fm=avifu0026s=77e20fd7f46fd14938e26a3e00ce707d”. In solar system: if this asteroid addition, “width”:400,”height”:225,”aspectRatio”:1.77778,”mediaType”:”image/jpeg”},”800px_1_1″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=378%2C0%2C1539%2C1539u0026s=583d83d6c5cd7d30681d52342bca4546″. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=378%2C0%2C1539%2C1539u0026fm=avifu0026s=3a60781136174adcf14a45b59158f776″. Additionally, “width”:800,”height”:800,”aspectRatio”:1,”mediaType”:”image/jpeg”},”800px_4_5″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=532%2C0%2C1231%2C1539u0026s=99f4b1c15cf794654c32b702d86fb2da”. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=532%2C0%2C1231%2C1539u0026fm=avifu0026s=ed0e80670bd59ca449d0227e8d452380″. Furthermore, “width”:640,”height”:800,”aspectRatio”:0.8,”mediaType”:”image/jpeg”},”800px_5_4″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=185%2C0%2C1924%2C1539u0026s=33097e8bce9cd74553153a9f418d28ee”. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=185%2C0%2C1924%2C1539u0026fm=avifu0026s=5ba82a4fd0123a6e139137d2283b49a5″. Moreover, “width”:800,”height”:640,”aspectRatio”:1.25,”mediaType”:”image/jpeg”},”800px_16_9″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=0%2C112%2C2232%2C1255u0026s=6e166ca1a71133d212e4e2f19bd59424″. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=0%2C112%2C2232%2C1255u0026fm=avifu0026s=dc64341716e6722d317e0858be75f916″. Also, “width”:800,”height”:450,”aspectRatio”:1.77778,”mediaType”:”image/jpeg”},”800px_2.25_1″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=0%2C243%2C2232%2C992u0026s=6090fcbc1024894009e06cbecc30a381″. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=800u0026h=800u0026rect=0%2C243%2C2232%2C992u0026fm=avifu0026s=8a4748c49188a010e5feb26dbc38ffaa”. In addition, “width”:800,”height”:356,”aspectRatio”:2.25,”mediaType”:”image/jpeg”},”1200px_5_4″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=1200u0026h=1200u0026rect=185%2C0%2C1924%2C1539u0026s=9c46a638753ca62e1758550faba0c2d7″. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=1200u0026h=1200u0026rect=185%2C0%2C1924%2C1539u0026fm=avifu0026s=ed6cad73fbd4cb753cfb1b7340f9e45e”. Additionally, “width”:1200,”height”:960,”aspectRatio”:1.25,”mediaType”:”image/jpeg”},”1200px_16_9″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=1200u0026h=1200u0026rect=0%2C112%2C2232%2C1255u0026s=81cf92c3b954f84b9c05437e00430132″. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=1200u0026h=1200u0026rect=0%2C112%2C2232%2C1255u0026fm=avifu0026s=0f6dc0b0f6e05cf18c45aea02b48e16b”. Furthermore, “width”:1200,”height”:675,”aspectRatio”:1.77778,”mediaType”:”image/jpeg”},”1200px_2.25_1″:{“src”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=1200u0026h=1200u0026rect=0%2C243%2C2232%2C992u0026s=6d9f448d703cc69fe4e4e871fb109e59″. “avifSrc”:”https://image.lematin.ch/2025/06/23/aefb1b89-1c06-4a5e-855c-bf529a416df3.jpg?auto=format%2Ccompress%2Cenhanceu0026fit=maxu0026w=1200u0026h=1200u0026rect=0%2C243%2C2232%2C992u0026fm=avifu0026s=47c3d61830a3ced2d67d91d720a3e1d4″. Moreover, “width”:1200,”height”:533,”aspectRatio”:2.25. “mediaType”:”image/jpeg”}},”description”:””},”titleHeader”:”Système solaire”,”title”:”Si cet astéroïde percutait la Lune, voici ce qui surviendrait”,”lead”:”Une collision avec la Terre en 2032 n’est plus d’actualité, mais les chances que notre satellite soit touché ont augmenté.”,”kickword”:{},”styles”:{“name”:”Default”},”useEmbedUrl”:false},”facebook”:{“published”:”2025-06-24T05:06:30.744Z”,”updated”:”2025-06-24T05:06:30.744Z”. 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{“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”Doté d’un diamètre de 60 mètres, l’astéroïde 2024 YR4, a brièvement fait la une des journaux au début de l’année lorsque les agences solar system: if this asteroid spatiales ont annoncé le mettre sous surveillance en raison d’un risque d’impact avec la Terre en 2032. De nouvelles observations ont depuis permis d’écarter le scénario d’un impact direct avec notre planète.”}]}. {“type”:”ad”,”availableFor”:{“desktop”:true,”app”:true}},{“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”Cependant, les chances que 2024 YR4 percute la Lune ont augmenté. Elles atteignent désormais 4,3%, selon les données recueillies par le télescope spatial James Webb en mai.”}]}. {“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”Une étude préliminaire, publiée sur la plateforme de prépublications d’articles scientifiques ArXiv et soumise à la revue Astrophysical Journal Letters, évalue pour la première fois les conséquences que pourrait avoir une telle collision.”}]}. {“type”:”crosshead”,”htmlText”:”Une «grosse explosion nucléaire»”,”style”:{}},{“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”2024 YR4 serait le plus gros astéroïde à s’écraser sur notre satellite naturel depuis environ 5000 ans, explique à l’AFP Paul Wiegert de l’université de l’Ontario de l’Ouest (Canada). Il est l’auteur principal de l’étude qui n’a pas encore été évaluée par des pairs. L’impact serait «comparable à une grosse explosion nucléaire en termes de solar system: if this asteroid quantité d’énergie libérée», détaille-t-il.”}]}. {“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”Jusqu’à 100 millions de kilogrammes de matière seraient projetées depuis la surface lunaire, selon une série de simulations menées par les chercheurs. Si l’astéroïde touchait la face visible de la Lune — une probabilité d’environ 50% — jusqu’à 10% de ces débris seraient attirés par la gravité terrestre. estiment-ils.”}]}. {“type”:”crosshead”,”htmlText”:”Des météorites dans notre ciel”,”style”:{}},{“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”Dans les jours suivant l’impact, il pourrait y avoir plus de 1000 fois le nombre habituel de météores menaçant les satellites orbitant autour de la Terre.”}]}. {“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”«Une roche d’un centimètre de diamètre voyageant à des dizaines de milliers de mètres par seconde est comme une balle», prévient M. Wiegert.”}]}. {“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”En revanche, ces débris de petite taille devraient se désintégrer dans l’atmosphère et ne pas représenter de danger pour les habitants au sol. Ils assisteraient tout de même à une «spectaculaire» pluie de météores, souligne l’étude.”}]}. {“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”Scruté pendant plusieurs mois, 2024 YR4 va s’éloigner solar system: if this asteroid considérablement de la Terre jusqu’à un retour en 2028 qui rendra sa course de nouveau observable.”}]}. {“type”:”crosshead”,”htmlText”:”«Une bonne cible» pour un exercice”,”style”:{}},{“type”:”textBlockArray”,”items”:[{“type”:”htmlTextItem”,”htmlText”:”Si le risque d’une collision avec la Lune se renforçait alors, cela en ferait «une bonne cible» pour un exercice de défense planétaire et «je suis sûr que cela serait envisagé», estime M. 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Solar system: if this asteroid

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