您现在的位置是:休閑 >>正文
【】
休閑766人已围观
简介Mars is alive. (Geologically.)NASA recently reported that its InSight lander — sent to observe ...
Mars is alive. (Geologically.)
NASA recently reported that its InSight lander — sent to observe geologic activity beneath the Martian surface — recorded one of its biggest quakes yet on Sept. 18. The 4.2 temblor, a quake that would have been big enough for people to feel had it happened on Earth, lasted an hour-and-a-half.
NASA said the event was "one of the biggest, longest-lasting marsquakes the mission has ever detected."
The agency also noted that the 4.2 quake was the third "major" quake InSight has observed in the last month. Both a 4.2 and 4.1 magnitude quake hit on Aug. 25.
Tweet may have been deletedThe InSight lander's seismometer is covered by a protective dome.Credit: NASA / JPL-Caltech
InSight landed on Mars in Nov. 2018, so planetary scientists are still observing how geologically active Mars truly is. The solar-powered lander has observed hundreds of quakes, suggesting there might be volcanically active places in the Martian underground, perhaps hot molten rock (magma) moving and flowing like it does on Earth.
Though NASA researchers are still studying the recent September quake, they've found the August marsquakes occurred far off, much farther than where the other quakes originated in the plains of Cerberus Fossae.
"One especially intriguing possibility is Valles Marineris, the epically long canyon system that scars the Martian equator," wrote NASA. That's some 6,000 miles from InSight.
SEE ALSO:If a scary asteroid will actually strike Earth, here's how you'll knowNASA engineers used a clever strategy to keep the seismometer on and recording quakes in recent months. Mars' orbit has taken it farther from the sun, and dust had covered InSight's solar panels. This meant there was insufficient sunlight to power the entire machine. So NASA directed InSight's robotic arm to "trickle" sand near a solar panel, thinking wind would sweep sand granules over the panel and remove dust.
The plan worked. And InSight recorded some major Martian quakes.
Related video: Mars will kill you in ways you'd never imagine
Tags:
转载:欢迎各位朋友分享到网络,但转载请说明文章出处“夫榮妻貴網”。http://new.maomao321.com/news/38e2899933.html
相关文章
5 people Tim Cook calls for advice on running the biggest company in the world
休閑It's only fitting that the leader of the biggest company in the world has a pretty impressive list o ...
【休閑】
阅读更多紐卡官方表示暈倒球迷情況穩定 凱恩雷吉隆送上祝福
休閑紐卡官方表示暈倒球迷情況穩定 凱恩雷吉隆送上祝福_比賽www.ty42.com 日期:2021-10-18 09:01:00| 評論(已有307535條評論) ...
【休閑】
阅读更多尤文VS羅馬前瞻:斑馬鋒線傷病多 阿萊格裏PK穆帥
休閑尤文VS羅馬前瞻:斑馬鋒線傷病多 阿萊格裏PK穆帥_比賽www.ty42.com 日期:2021-10-17 12:31:00| 評論(已有307402條評論) ...
【休閑】
阅读更多