时间:2025-04-03 11:35:23 来源:网络整理编辑:焦點
There's a canyon on Mars that makes the Grand Canyon look small.The European Space Agency (ESA) rece
There's a canyon on Mars that makes the Grand Canyon look small.
The European Space Agency (ESA) recently released rich images of two great chasms, or trenches, in this great canyon system, called Valles Marineris. The ESA's Mars Express orbiter snapped the shots from above.
On left is the over 520-mile-long (840-kilometer) Ius Chasma
On right is the 500-mile-long (805-kilometer) Tithonium Chasma
These great chasms, which reach up to some 4.3 miles deep, are just a section of Valles Marineris. (For reference, the Grand Canyon reaches just over a mile down.) "As the largest canyon system in the Solar System, it would span the distance from the northern tip of Norway to the southern tip of Sicily," the ESA said in a statement.
These great chasms are thought to have formed by the ancient activity of tectonic plates moving apart, the ESA explains. (Today on geologically-active Earth, tectonic plates are currently moving apart at places like the mid-Atlantic Ridge.)
Although Mars isn't nearly as geologically active today, it's not nearly dead. Sizable quakes still shake the Martian land, perhaps triggered by magma, or molten rock, welling up and stressing the surface. The NASA probe InSight has recorded over 1,300 quakes on Mars (as of early May 2022).
"Mars remains active, just not as active as Earth," Mark Panning, a planetary scientist and NASA's InSight lander project manager, told Mashable.
Tesla's rumored P100D could make Ludicrous mode even more Ludicrous2025-04-03 11:30
Drew Barrymore, Pitbull help kick off Chelsea Handler's Netflix talk show2025-04-03 10:58
Can you spot the rude word hiding in this 'Countdown' anagram?2025-04-03 10:49
British man trolls neighbour with brutally honest note about a stolen parcel2025-04-03 10:40
Samsung Galaxy Note7 teardown reveals the magic behind the phone's iris scanner2025-04-03 09:52
This is what Xiaomi's first drone looks like2025-04-03 09:47
Louis C.K. wins $50,000 on 'Jeopardy' because he's Louis C.K.2025-04-03 09:42
Classic birthday cakes will give you a dose of nostalgia and a sugar high2025-04-03 09:30
Mom discovers security cameras hacked, kids' bedroom livestreamed2025-04-03 09:01
Shanghai zebra crossing literally transformed into a zebra crossing2025-04-03 09:00
Tesla's rumored P100D could make Ludicrous mode even more Ludicrous2025-04-03 11:05
Half of your friends may not actually consider you to be their friend2025-04-03 10:53
Canadian airline turns kitty into staff member during Alberta evacuations2025-04-03 10:48
Snapchat finally lets you zoom in with just one hand2025-04-03 10:27
Twitter grants everyone access to quality filter for tweet notifications2025-04-03 10:18
Instagram just changed its logo in a big way2025-04-03 10:15
Can we talk about Sansa Stark?2025-04-03 10:00
Mars is the brightest it has been in a decade: Here's how to see it this weekend2025-04-03 09:31
Dog elected for third term as mayor of Minnesota town2025-04-03 09:27
'Game of Thrones' star Rose Leslie surprises with response to Jon Snow question2025-04-03 09:11