时间:2026-03-27 09:54:13 来源:网络整理编辑:綜合
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
One of the most controversial power struggles in media comes to a close2026-03-27 09:52
Students told to keep skirts below the knee because of boys and male staff2026-03-27 09:48
The story of Kobe Bryant's epic career, as told by his 10 most popular tweets2026-03-27 09:39
This beautiful unused subway could soon reopen to the public2026-03-27 08:39
Give your kitchen sponge a rest on this adorable bed2026-03-27 08:38
Airport reopens, PM says 'normal life' resumes in Brussels after attacks2026-03-27 08:36
David Cameron protest stars piñata pig with his face on it2026-03-27 08:19
Android Auto available in 18 new countries, including Russia and India2026-03-27 08:18
Tesla's rumored P100D could make Ludicrous mode even more Ludicrous2026-03-27 08:04
Why Saint Laurent abruptly deleted its entire Instagram history2026-03-27 07:25
Fake news reports from the Newseum are infinitely better than actual news2026-03-27 09:53
Brad Pitt is a '90s nightmare in this throwback pic with Kirsten Dunst2026-03-27 09:50
Bruce Springsteen cancels North Carolina show in response to anti2026-03-27 09:38
Nerd out about books with the new MashReads podcast2026-03-27 09:21
Satisfy your Olympics withdrawals with Nike's latest app2026-03-27 08:36
Watch Justin Bieber's slick piano covers of 'Hotline Bling' and 'Work'2026-03-27 08:33
3 things you can do in 'Uncharted 4' that you never could before2026-03-27 08:05
Brad Pitt is a '90s nightmare in this throwback pic with Kirsten Dunst2026-03-27 08:02
Tributes flow after death of former Singapore president S.R. Nathan2026-03-27 07:30
Google expands self2026-03-27 07:23