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After 44 years of travel, Voyager 1 is the most distant human-made object in space May 12, 2021 An undated artist's concept shows NASA's Voyager 1 spacecraft, the first human-made object to venture into interstellar space. PHOTO: REUTERS The classic 1979 sci-fi horror film "Alien" was advertised with the memorable tagline, "In space, no can hear you scream." It did not say anything about humming. Instruments aboard NASA's Voyager 1 spacecraft, which nine years ago exited our solar system's outer reaches, have detected a faint monotonous hum caused by the constant vibrations of the small amou...

From more than two dozen different countries have been able to find? the torpedo-shaped vehicle can reach depths up to 6,000 meters, or more than 3 1/2 miles below the surface. and it can survey wide swaths of the ocean floor, using what's called side scan sonar. >> they send a sound pulse that's sort of a fan beam out to the side. it will travel out almost half a mile from the vehicle. and it bounces off the sea floor and we get a reflection back to the vehicle. >> reporter: they call the process mows the lawn because it works its assigned grid back and forth before returning to the surface w...

First of all, it can reach depps up of 6,000 meters or more than 3 1/2 miles below the surface. and it can survey wide swaths of the ocean floor using what's called side scan sonar. >> they send a sound pulse with a fan beam out to the side and it will travel out almost half a mile from the vehicle. and it bounces off the seafloor and we get a reflection back to the vehicle. >> they call the process mowing the lawn because it works its assigned grid back and forth before returning to the surface with images captured on a high resolution camera. it's all done at the touch of a laptop on dry lan...

It works its assigned grid back and forth before returning to the surface with images captured on a high-resolution camera. it's all done at the touch of a laptop on dry land. how do you tell the difference? how do you know if it's a fish or rock or plane? >> you can tell from the return. man made objects, metal on the sea floor responds very strongly. >> reporter: the team here hasn't been asked yet to help search for the plane in the ocean, but the they are, it won't be the first time. the remus 6000 was called on to help find air france flight 447 after it crashed into the atlantic notion j...

Can survey wide swathes of the ocean floor using what's called side scan sonar. >> they send a sound pulse that's sort of a fan beam out to the side. it will travel out almost half a mile from the vehicle and it bounces off the sea floor and we get a reflection back to the vehicle. >> reporter: they call the process mowing the lawn because it works its assigned grid back and forth before returning to the surface with images captured on a high resolution camera. it's all done at the touch of a laptop on dry land. >> reporter: how would you tell the difference? >> you can tell from return. manma...