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This April 25, 2019 photo made available by NASA shows the InSight lander's dome-covered seismometer on Mars. On Oct. 1, 2019, scientists released an audio sampling of marsquakes and other sounds recorded by the probe. VOA

NASA’s InSight lander on Mars has captured the low rumble of marsquakes and a symphony of other otherworldly sounds.

Scientists released an audio sampling Tuesday. The sounds had to be enhanced for humans to hear.


InSight’s seismometer has detected more than 100 events, but only 21 are considered strong marsquake candidates. The rest could be marsquakes — or something else. The French seismometer is so sensitive it can hear the Martian wind as well as movements by the lander’s robot arm and other mechanical “dinks and donks” as the team calls them.

“It’s been exciting, especially in the beginning, hearing the first vibrations from the lander,” said Imperial College London’s Constantinos Charalambous, who helped provide the audio recordings. “You’re imagining what’s really happening on Mars as InSight sits on the open landscape,” he added in a statement.


NASA’s InSight lander on Mars has captured the low rumble of marsquakes and a symphony of other otherworldly sounds. Pixabay

InSight arrived at Mars last November and recorded its first seismic rumbling in April.

A German drilling instrument, meanwhile, has been inactive for months. Scientists are trying to salvage the experiment to measure the planet’s internal temperature.

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The so-called mole is meant to penetrate 16 feet (5 meters) beneath the Martian surface, but has managed barely 1 foot (30 centimeters). Researchers suspect the Martian sand isn’t providing the necessary friction for digging, causing the mole to helplessly bounce around rather than burrow deeper, and to form a wide pit around itself. (VOA)


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Indian wrestler Ravi Kumar (57kg) and Deepak Punia (86kg) enjoyed fruitful outings at the Tokyo Olympic Games as they secured semifinal berths in their respective weight categories at the Makuhari Messe on Wednesday.

On the opening day of the wrestling competition, Ravi Kumar defeated Bulgaria's Georgi Vangelov 14-4 on technical superiority to reach the last-four in the men's 57kg category, while compatriot Deepak Punia overcame China's Zushen Lin 6-3 on points to advance to the semifinals.

Ravi Kumar will take on Nurislam Sanayev of Kazakhstan in the last-four, while Punia will be up against David Morris Taylor of the USA.

Earlier, Ravi Kumar had won his opening-round bout by technical superiority against Colombia's Oscar Tigreros to secure a quarterfinal spot. Competing in the Round-of-16 bout against the Colombian wrestler, the 23-year-old Ravi Kumar, who is making his Olympic debut, showed no nerves as he dominated the bout to win by technical superiority (13-2).

Ravi Kumar landed attack after attack and went 13-2 up, winning the bout by technical superiority with minutes to spare. In wrestling, building up a 10-point lead over the opponent results in a victory by technical superiority.

India's 86kg freestyle wrestler Deepak Punia showed no signs of the niggle that had forced him to pull out of the Poland Open Ranking Series in Warsaw in June, as he defeated Nigeria's Ekerekeme Agiomor on technical superiority to secure a quarterfinal berth.

He got his Olympic campaign to a fine start as he was in control from the start of the bout and hardly ever allowed his Nigerian opponent any room to maneuver his moves, finally winning with a 12-1 on technical superiority.

Punia, who had also suffered an elbow injury just before the Games, was slow at the start but came into his own as the bout progressed, inflicting takedowns at regular intervals to earn points.

The Indian wrestler eased into a 4-1 lead at the break and extended his lead comfortably in the second period.

Punia, the silver medallist from the 2019 world wrestling championships, then set up a clash with China's Lin Zushen in the quarterfinals and defeated him 6-3.

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