时间:2025-07-11 06:02:28 来源:网络整理编辑:娛樂
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 deleted
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.
We asked linguists if Donald Trump speaks like that on purpose2025-07-11 05:55
莫斯科斯巴達與萊比錫的比賽取消 前者直接出局2025-07-11 05:28
美國足協:在戰爭停止前 不會同俄羅斯踢任何比賽2025-07-11 05:08
熱議亞泰退出亞冠 :無奈卻不失理性 放棄正常沒啥好指責的2025-07-11 04:56
MashReads Podcast: What makes a good summer read?2025-07-11 04:45
國安後衛楊帆本周到津門虎報到 將以租借加盟形式回歸2025-07-11 04:37
費迪南德:曼聯又將迎來重建 未來兩年不可能奪冠2025-07-11 04:30
巴薩不會為登貝萊提高續約報價 想留隊就隻能接受2025-07-11 04:03
How Hyperloop One went off the rails2025-07-11 03:34
前中超助教:中國青訓教練必須接受新的理念 兩三年不可能見效2025-07-11 03:33
Xiaomi accused of copying again, this time by Jawbone2025-07-11 06:02
瓜帥 :敘利亞等地都在遭受戰亂 隻有百姓無辜受苦2025-07-11 05:53
再戰越南!U23國足將在迪拜杯迎戰越南U23隊2025-07-11 05:19
米蘭德比前瞻:國米滿編欲複仇 吉魯繼續發神威 ?2025-07-11 05:18
Dramatic photo captures nun texting friends after Italy earthquake2025-07-11 05:15
免簽上癮 !巴薩接近敲定凱西 5年合同+年薪650萬歐2025-07-11 05:14
足協三步走解決欠薪準入需製定細則 本賽季將成緩衝年2025-07-11 05:00
美國足協:在戰爭停止前 不會同俄羅斯踢任何比賽2025-07-11 04:31
Make money or go to Stanford? Katie Ledecky is left with an unfair choice.2025-07-11 04:27
鄭智下家12強賽後將揭曉 廣州隊一些年輕球員進留洋名單2025-07-11 03:35