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Meteor Rumbles Over Houston, as Six-Pound Fragment Crashes Into a Texas Home

著者: EditorDavid
2026年3月22日 16:34

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タイトル:テキサスのヒューストンで流星が鳴り響き、六ポンドの流星片が住宅に衝突

ヒューストン地域では今日、空で光と音を伴って現れた流星に関する話題が広まっています。地元のニュースキャスターは「午後のどよめき、多くの人々が経験した空での明かりの闪光」と述べています。

NASAによると、六ポンドの流星は4:40 PMにヒューストン北西のステージコーchで空高く見られ、35,000マイル/時間で东南方向へ移動し、29マイル上方のバムルで破壊されました。流星の崩壊は約1トン重た、直径3フィートの球体だったと推定され、その破裂が一部地域の人々に聞こえた音波を生みました。

地元民たちは晴れた空にもかかわらず低きらりとした雷のような音を感じました。また、先週には7トンある小惑星が複数州を通過し、今年6月にはジョージア上空で爆発した明るい流星も同様の音波を生み出していました。

この流星は住宅の屋根を突き破り、収納室、床、そしてベッドに到達しました。CBSニュースによると、NASAは「屋根を破壊した流星の崩壊が地響きを生んだ」と述べています。

関連リンク:テスラの新型トラックは運転手たちに人気、流星片が床に落ちてベッドに落ちる一件、米ケーブルテレビ業界の大絶滅 - ローカル運営会社が閉鎖またはISPになる可能性がある。
"It is the talk of the town today — the loud boom, the flash of light in the sky experienced by a lot of folks across the Houston area this afternoon," says a local Texas newscaster. "And then there was this — a home in northwest Harris county hit by something that crashed through their roof." Travelling at very high speed, the six-pound meteorite crashed through their roof and through their attic, crashing again through the ceiling of the floor below. It then bounced off the floor, hit the ceiling again — and then fell onto the bed. CBS News reports: NASA said in a social media post that the meteor became visible at 49 miles above Stagecoach, northwest of Houston, at 4:40 p.m. local time. The meteor moved southeast at 35,000 miles per hour, breaking apart 29 miles above Bammel, just west of Cypress Station, NASA said. "The fragmentation of the meteor — which weighed about a ton with a diameter of 3 feet — created a pressure wave that caused booms heard by some in the area," NASA said in the post. Across the Houston area, residents described hearing a low, rumbling sound that many compared to thunder, even though the skies were clear, according to CBS affiliate KHOU. Earlier this week, an asteroid weighing about 7 tons and traveling at 45,000 mph traveled over multiple states. And last June, a bright meteor was seen across the southeastern U.S. and exploded over Georgia, creating similar booms heard by residents in the area.

Read more of this story at Slashdot.

NASA's Hubble Unexpectedly Catches Comet Breaking Up

著者: BeauHD
2026年3月21日 20:00

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NASAのハブラー宇宙望遠鏡は、彗星C/2025 K1 (ATLAS)が初めて解体を始めた直後に予期せぬ早期段階での解体を捉えることに成功しました。この現象はコニファイン(Auburn Universityの物理学科教授)により報告され、「最高の科学は偶然から生まれる」とのことです。

コニファインは、観測が始まった翌日にこれらの画像を見た際に、撮影時に提案していた1つの彗星が4つに分断されていることに気づきました。ハブラーは、氷核周囲を包むガスと塵で構成されるcoma(彗発散)を持つ少なくとも4つの片鱗を捉えました。しかし、地上からの観測では、それらはわずかに見分けがつかない明るいボルブだけでした。

コニファインによると、「ハブラーが実際に解体した寸時にこのような現象を捉えることはこれまで例がありません。通常は数週間から1ヶ月後にしか見られませんが、今回は実際の解体から数日後です」とのことです。これは彗星表面で何が起こっているかについての重要な物理的過程を示唆しています。

これらの結果は、「イカルス」誌に発表されています。
NASA's Hubble Space Telescope unexpectedly captured a rare, early-stage breakup of comet C/2025 K1 (ATLAS) just days after it first began disintegrating. Phys.org reports: "Sometimes the best science happens by accident," said co-investigator John Noonan, a research professor in the Department of Physics at Auburn University in Alabama. "This comet got observed because our original comet was not viewable due to some new technical constraints after we won our proposal. We had to find a new target -- and right when we observed it, it happened to break apart, which is the slimmest of slim chances." Noonan didn't know K1 was fragmenting until he viewed the images the day after Hubble took them. "While I was taking an initial look at the data, I saw that there were four comets in those images when we only proposed to look at one," said Noonan. "So we knew this was something really, really special." Hubble caught K1 fragmenting into at least four pieces, each with a distinct coma, the fuzzy envelope of gas and dust that surrounds a comet's icy nucleus. Hubble cleanly resolved the fragments, but to ground-based telescopes, at the time they only appeared as barely distinguishable, bright blobs. [...] "Never before has Hubble caught a fragmenting comet this close to when it actually fell apart. Most of the time, it's a few weeks to a month later. And in this case, we were able to see it just days after," said Noonan. "This is telling us something very important about the physics of what's happening at the comet's surface. We may be seeing the timescale it takes to form a substantial dust layer that can then be ejected by the gas." The findings have been published in the journal Icarus.

Read more of this story at Slashdot.

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