时间:2024-11-10 10:53:18 来源:网络整理编辑:娛樂
The Martian desert teems with geologic wonder.Aboard NASA's far-off satellite, the Mars Reconnaissan
The Martian desert teems with geologic wonder.
Aboard NASA's far-off satellite, the Mars Reconnaissance Orbiter, a powerful camera recently captured a brilliant image of sand dunes inside a Martian crater. NASA took the image from 160 miles above the red desert, in the Tyrrhena Terra region on Mars, located in the planet's southern hemisphere.
These are a curious type of dune, dubbed "star dunes." They're often formed inside craters when wind blows from different directions, ultimately creating a patterned landscape of intersecting, polygonal, star-like formations.
NASA scientists weren't looking for these dunes, but "fortuitously" came across them while sleuthing for ancient clays in the crater. The camera that captured the image is called the High Resolution Imaging Science Experiment, or HiRISE.
"An amazing aspect of Mars that is captured in many HiRISE images is geologic diversity within a small area," NASA tweeted from its HiRISE account.
Star dunes in a crater on Mars. This dune region is over a mile wide.Credit: NASA / JPL / University of ArizonaSEE ALSO:Compelling Mars photo shows Martian water flowed way more recently than we thinkThe mega-comet hurtling through our solar system is 85, yes 85, miles wide
Daring NASA helicopter captures stunning view of the Martian desert
The star of NASA's megarocket reveal isn't the big rocket
NASA's Mars Reconnaissance Orbiter, launched in 2006, has captured vivid images of Mars' craters, valleys, dried-up rivers, and beyond, for 16 years. Up in space — and away from intense Martian dust storms — the satellite has outlasted all the Mars rovers.
And it doesn't just capture the natural world. Recently, the satellite imaged China's Zhurong rover rumbling across the Martian desert.
One of the most controversial power struggles in media comes to a close2024-11-10 10:46
Millions of sunflowers bloom in Japan and the images are stunning.2024-11-10 10:36
LeBron James signs new contract that will make him highest2024-11-10 10:25
Why the extreme Louisiana floods are worrying but not surprising2024-11-10 09:32
Nancy Pelosi warns colleagues after info hacked2024-11-10 09:22
People pay tribute to dead footballer by sharing his wonder goal2024-11-10 09:04
Millions of sunflowers bloom in Japan and the images are stunning.2024-11-10 09:00
I tested out a virtual reality fart simulator and it was as odd as it sounds2024-11-10 08:48
More than half of women in advertising have faced sexual harassment, report says2024-11-10 08:33
3 startup pitches straight from the Matter media accelerator2024-11-10 08:22
One of the most controversial power struggles in media comes to a close2024-11-10 10:36
Michael Jordan sent boxes of gear to pickup player who wore full MJ uniform2024-11-10 10:34
Tesla removes 'self2024-11-10 10:29
People are losing their minds over the world's most successful Olympic couple2024-11-10 10:29
Is Samsung's Galaxy Note7 really the best phone?2024-11-10 09:53
Olympic cheering blamed for active shooter chaos at JFK Airport2024-11-10 09:28
People pay tribute to dead footballer by sharing his wonder goal2024-11-10 08:41
I tested out a virtual reality fart simulator and it was as odd as it sounds2024-11-10 08:38
Mall builds real2024-11-10 08:26
Tesla removes 'self2024-11-10 08:19