时间:2026-10-06 00:20:40 来源:网络整理编辑:休閑
Our solar system is a dynamic, evolving realm of space.A powerful camera aboard NASA's Mars Reconnai
Our solar system is a dynamic, evolving realm of space.
A powerful camera aboard NASA's Mars Reconnaissance Orbiter — a satellite orbiting the red planet — spotted a relatively recent impact site on the Martian surface. The spacecraft detected a dark spot on the ground, and then the high-resolution camera (called the High-Resolution Imaging Experiment) snapped the detailed shot.
The impact, which is brand new in cosmic terms, likely formed between February 2006 and March 2014, noted the imaging team at the University of Arizona. For a size reference, the entire black and white image is under five kilometers, or some 3 miles, across. Blasted-out rays of material are clearly visible around the crater, which formed from a falling asteroid or meteorite.
Tweet may have been deletedSEE ALSO:If a scary asteroid will actually strike Earth, here's how you'll know
Compelling Mars photo shows Martian water flowed way more recently than we think
Scientists detect something really unexpected beneath Saturn's 'Death Star' moon
The mega-comet hurtling through our solar system is 85, yes 85, miles wide
Mars is absolutely covered in craters. NASA estimates there are over a quarter-million impact craters about the size of Arizona's famous Barringer Crater, which is some 4,000 feet across. And there are over 43,000 Martian craters larger than three miles wide.

Meanwhile, Earth has just around 120 known impact craters. That's because over hundreds of millions of years, different parts of Earth's surface have both been covered in lava or recycled as the giant plates that compose Earth's crust (tectonic plates) continually move rock below and back up to the surface. Mars isn't nearly geologically dead — marsquakes frequently occur there — but it's not nearly as active as Earth, a water-blanketed planet teeming with erupting volcanoes. On Mars today, there's little to wash away, or cover up, new craters.
One of Mars' most recent impact craters, then, might be visible for millions and millions of years.
TopicsNASA
U.S. government issues warning on McDonald's recalled wearable devices2026-10-06 00:17
圖已出待官宣! 曼聯妖鋒即將2500萬鎊加盟利茲2026-10-05 23:59
張稀哲:這是我們衝擊世界杯的最好機會 相比上一屆更有信心2026-10-05 23:46
FIFA官網撰文談韋世豪 :中國C羅 卡帥治下展露天賦2026-10-05 23:37
Twitter grants everyone access to quality filter for tweet notifications2026-10-05 23:27
國足訓練2陌生人場邊觀察 工作人員警覺詢問身份2026-10-05 23:14
英超名宿製止球迷群毆 “野蠻人”平息騷亂獲讚2026-10-05 23:09
米蘭官方:梅西亞斯租借加盟 買斷金額540萬歐元2026-10-05 22:44
New Zealand designer's photo series celebrates the elegance of aging2026-10-05 22:31
對陣穆伊海港國腳心中有數 需嚴防其插上和傳球調度2026-10-05 21:44
Michael Phelps says goodbye to the pool with Olympic gold2026-10-05 23:51
官方 :利物浦續約隊長亨德森 就差薩拉赫馬內了2026-10-05 23:51
國足傷病員突增一人 阿蘭因身體反應缺席全隊合練2026-10-05 23:43
近10年引援花銷榜 :曼城藍軍領跑 巴黎第4曼聯第72026-10-05 23:32
Olympics official on Rio's green diving pool: 'Chemistry is not an exact science'2026-10-05 23:24
海港結束兩周假期集合外援四缺一 邁斯托羅維奇歸隊2026-10-05 23:23
曝皇馬已敲定卡馬文加 3100萬歐轉會費+浮動獎金2026-10-05 23:11
曝皇馬已敲定卡馬文加 3100萬歐轉會費+浮動獎金2026-10-05 23:04
Visualizing July's astounding global temperature records2026-10-05 21:43
卡塔爾王室成員 :姆巴佩留隊 巴黎即將與其談續約2026-10-05 21:34