【】
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

Katy Perry talks 'Rise,' her next batch of songs, and how to survive Twitter
Katy Perry recently surpassed 90 million followers on Twitter, making her the person with the most f2026-05-20
武磊感慨日本全隊留洋海外 看到與亞洲強隊巨大差距_比賽www.ty42.com 日期:2021-09-08 09:31:00| 評論(已有301132條評論)2026-05-20
魯媒 :郭田雨可充當國足奇兵 日本隊的壓力遠遠大於國足_球員www.ty42.com 日期:2021-09-07 09:31:00| 評論(已有300951條評論)2026-05-20
滬媒:國足教練組要自信 警惕歸化背後資本思維綁架球隊_日本國家隊www.ty42.com 日期:2021-09-08 14:31:00| 評論(已有301217條評論)2026-05-20
Pokémon Go is so big that it has its own VR porn parody now
Behind every great entertainment property there's a cheekily named porn parody. Super Hornio Bros. G2026-05-20
德國VS冰島首發 :薩內維爾納領銜出戰 哈弗茨替補_歐洲區www.ty42.com 日期:2021-09-09 02:31:00| 評論(已有301273條評論)2026-05-20


最新评论