A lab in Latvia is developing a device to help Earth dodge asteroids

WION Web Team
Riga, Latvia Published: Dec 02, 2020, 09.06 AM(IST)

Asteroids Photograph:( AFP )

Story highlights

NASA plans to launch the first part of the Asteroid Impact and Deflection Assessment (AIDA) mission -- known as the Double Asteroid Redirection Test (DART) -- on July 22, 2021 on a Falcon 9 rocket belonging to tech tycoon Elon Musk's Space X.

A team of scientists is working on a technology that could one day stop asteroids from smashing into Earth. The high-precision timers being built by hand in the lab of Latvian start-up Eventech are currently being used to track satellites.

This year, the company won a European Space Agency (ESA) contract to develop timers that will study the possibility of re-directing an asteroid before it comes too close to our planet for comfort.

Although Latvia only became a full member of the ESA in 2016, its engineers have been tracking satellites since the Soviet-era. The University of Latvia even has its own satellite laser ranging station in a forest south of Riga.

NASA plans to launch the first part of the Asteroid Impact and Deflection Assessment (AIDA) mission -- known as the Double Asteroid Redirection Test (DART) -- on July 22, 2021 on a Falcon 9 rocket belonging to tech tycoon Elon Musk's Space X.

The 500-kilogram (1,100-pound) camera-equipped probe will fly to an asteroid named Didymos and smash into it, trying to blow it off its current course that will see it pass near Earth sometime in 2123.

Eventech's deep space event timers are being developed for the follow-up HERA mission, which is planned to launch five years later, to determine if the first mission succeeded.

Eventech's timers are part of a space technology tradition in the Baltic state stretching back to Soviet times when Sputnik -- the first man-made satellite to orbit the Earth -- was launched in 1957.

They measure the time needed for an impulse of light to travel to an object in orbit and back.

Eventech devices can record the measurement to within a picosecond -- or one trillionth of a second -- which allows astronomers to convert a time measure into a distance measurement with up to two millimetres of precision.

Around 10 of the timers are produced every year and they are used in observatories around the world.

They track Earth's increasingly crowded atmosphere, filled with a new crop of private satellites alongside traditional scientific and military ones.

Eventech's engineers said they use analogue parts as much as possible, mainly because microchips take nanoseconds to compute the signal, which is too long for incoming measurements ranging in picoseconds.

Even the physical length of the motherboard can affect how fast the signal travels from one circuit to another.

While these timers are used for calculations on Earth, a different appliance for deep space missions is being developed in another corner of the same lab to track planetary objects from a moving space probe.

(with inputs)

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