AP

NASA Mars lander captures strikes by 4 incoming space rocks

Sep 19, 2022, 12:33 AM | Updated: 12:37 pm

This undated photo released by NASA shows craters that were formed by a Sept. 5, 2021, meteoroid im...

This undated photo released by NASA shows craters that were formed by a Sept. 5, 2021, meteoroid impact on Mars, the first to be detected by NASA’s InSight. Taken by NASA’s Mars Reconnaissance Orbiter, this enhanced-color image highlights the dust and soil disturbed by the impact in blue in order to make details more visible to the human eye. NASA lander on Mars has captured the vibrations and sounds of four meteorites striking the planet's surface. Scientists reported Monday, Sept. 19, 2022, that Mars InSight detected seismic and acoustic waves from a series of impacts in 2020 and 2021. (NASA/JPL-Caltech/University of Arizona via AP)

(NASA/JPL-Caltech/University of Arizona via AP)

CAPE CANAVERAL, Fla. (AP) — A NASA lander on Mars has captured the vibrations and sounds of four meteoroids striking the planet’s surface.

Scientists reported Monday that Mars InSigh t detected seismic and acoustic waves from a series of impacts in 2020 and 2021. A satellite orbiting the red planet confirmed the impact locations, as far as 180 miles (290 kilometers) from the lander.

Scientists are delighted by the detections — a first for another planet.

The first confirmed meteoroid exploded into at least three pieces, each leaving its own crater. An 11-second audio snippet of this strike includes three “bloops,” as NASA calls them, one of sounding like metal flapping loudly in the wind here on Earth.

“After three years of InSight waiting to detect an impact, those craters looked beautiful,” Brown University’s Ingrid Daubar, a co-author of the research paper in the journal Nature Geoscience, said in a statement.

The InSight team expected to pick up numerous meteoroid strikes, given Mars’ proximity to the asteroid belt and the planet’s thin atmosphere, which tends to keep entering space rocks from burning up. But the lander’s French-built seismometer may have missed impacts because of interfering noise from the Martian wind or seasonal changes in the atmosphere. Now scientists know what to look for, according to NASA, likely resulting in a surge of detections.

“Impacts are the clocks of the solar system,” French lead author Raphael Garcia said in a statement from the Higher Institute of Aeronautics and Space in Toulouse. “We need to know the impact rate today to estimate the age of different surfaces.”

Launched in 2018, InSight has already detected more than 1,300 marsquakes. The largest measured a magnitude 5 earlier this year. By comparison, the marsquakes generated by the meteoroid impacts registered no more than a magnitude 2.

___

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.

Copyright © The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

AP

Image: A cargo ship is stuck under the part of the structure of the Francis Scott Key Bridge after ...

Associated Press

Authorities identify 2 bodies recovered at site of Baltimore bridge collapse

A major bridge in Baltimore snapped and collapsed after a container ship rammed into it early Tuesday, and several vehicles fell into the river below.

23 hours ago

Photo: Mountaineer Jim Whittaker has died at 95....

Gene Johnson, The Associated Press

Lou Whittaker, among the most famous American mountaineers, has died at age 95

Lou Whittaker, a legendary American mountaineer who helped lead ascents of Mount Everest, K2 and Denali, has died at age 95.

24 hours ago

File photo: Former Sen. Joe Lieberman speaks in Washington on Jan. 18, 2024....

Associated Press

Former Sen. Joe Lieberman, Democrats’ VP pick in 2000, dead at 82

Former U.S. Sen. Joe Lieberman of Connecticut, who nearly won the vice presidency on the Democratic ticket with Al Gore in 2000, has died.

24 hours ago

islamic state attack...

Vanessa Gera, The Associated Press

What we know after the Islamic State group claims responsibility for Moscow massacre

The Islamic State group has claimed responsibility for an attack on a suburban Moscow concert hall that killed at least 133 people.

4 days ago

Moscow shooting...

The Associated Press

Russia: 60 dead, 145 injured in concert hall raid; Islamic State group claims responsibility

Assailants burst into a concert hall in Moscow on Friday and sprayed the crowd with gunfire, killing over 60 people, injuring more than 100.

6 days ago

Photo: Britain's Kate, Duchess of Cambridge visits 282 (East Ham) Squadron, RAF Air Cadets, Cornwel...

Associated Press

Kate Middleton announces she has cancer, is undergoing chemotherapy

Kate Middleton, Princess of Wales, says she is undergoing chemotherapy to treat cancer. She has been out of view since Christmas.

6 days ago

NASA Mars lander captures strikes by 4 incoming space rocks