【】

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
相关文章
- The group behind a growing list of celebrity social media breaches has struck again, this time takin2025-09-17
- 上課!卡納瓦羅曬最新動態 正攻讀FIFA俱樂部管理文憑_廣州www.ty42.com 日期:2021-09-23 19:31:00| 評論(已有303561條評論)2025-09-17
- 切爾西VS曼城首發:盧卡庫搭檔維爾納 丁丁出戰_尼奧www.ty42.com 日期:2021-09-25 19:01:00| 評論(已有303839條評論)2025-09-17
- 官宣 !巴薩200萬敲定17歲天才 曾15歲破門創土超紀錄_德米爾www.ty42.com 日期:2021-09-24 09:31:00| 評論(已有303626條評論)2025-09-17
- With the Pokémon Go fever still shaking half the world, there's bound to be plenty of trainer2025-09-17
- 記者談卡帥解約:看到了他的成長 公益聯賽要什麽大牌啊?_李璿www.ty42.com 日期:2021-09-23 11:01:00| 評論(已有303475條評論)2025-09-17
最新评论