An Asteroid Is Passing Earth Today, so Scientists Are Shooting It With Radio Waves

The HAARP facility's antenna array includes 180 antennas spread over 33 acres.

The HAARP The facility’s antenna array consists of 180 antennas spread over 33 hectares.
photo: HAARP

A group of researchers try it Bouncing radio signals off a 500 foot wide asteroid during its close flyby Earth on Tuesday.

The High Frequency Active Auroral Research Program (HAARP) adjusts its antennas at Asteroid 2010 XC15, a space rock categorized as near-Earth Potentially Dangerous Asteroid. The effort consists in preparing a test run for a larger object, so-called apophis, who will encounter our planet up close in 2029.

“What’s new and what we’re trying to do is probe the interior of asteroids with long-wavelength radars and radio telescopes from the ground,” said Mark Haynes, the project’s lead investigator and radar systems engineer at NASA’s Jet Propulsion Laboratory in Southern California expression. “Longer wavelengths can penetrate the interior of an object much better than the radio wavelengths used for communication.”

HAARP is a research facility in Gakona, Alaska (one that The subject of numerous conspiracy theories). It consists of 180 radio frequency antennas, each 72 feet high and spread over 33 acres. That Plant emits radio beams in the direction of Ionosphere, the ionized part of the atmosphere located about 50 to 400 miles (80 to 600 kilometers) above the earth’s surface. HAARP sends radio signals into the ionosphere and waits for them to return to measure, among other things, the disturbances caused by the sun.

The facility launched a science campaign in October with 13 experiments, including one where signals were reflected off the moon. Back then, the HAARP were researchers consider sending a radio signal to an asteroid to examine the interior of the body of rock.

During today’s experiment, tThe HAARP antennas in Alaska will transmit the radio signals to the asteroid, and then become scientists test when the reflected signals arrive at Antenna arrays at the University of New Mexico Long Wavelength Array and California’s Owens Valley Radio Observatory Long Wavelength Array.

HAARP broadcasts a continuously chirping signal at slightly above and below 9.6 megahertz; the chirp repeats at two-second intervals. At its closest approach on December 27, the asteroid will be twice as far from Earth as the moon.

Tuesday’s experiment is designed to prepare for an upcoming asteroid encounter in 2029. This potentially dangerous asteroid, officially known as 99942 Apophis, is about 1,210 feet (370 meters) wideand it will come inside 20,000 miles (32,000 kilometers) from Earth on April 13, 2029. The near-Earth object in 2068 was believed to pose little risk to Earth, but NASA ruled that out.

Nevertheless, HAARP wants to probe the asteroid to prepare for possible risks in the future space rock. “The more time that elapses before a potential impact, the more opportunities there are to distract him,” Haynes said.

In September, NASA’s DART spacecraft smallinto a little acked asteroid and successfully changed its orbit. Such a strategy could be one Ability to deflect a looming space rock Earth.

Today’s test shows the potential of using long-wave radio signals for probing the interior of asteroids. “If we can get the ground-based systems to work, that gives us a lot of opportunities to try indoor detection of these objects,” Haynes said.

More: A strong recoil effect magnified NASA’s asteroid deflection experiment

https://gizmodo.com/haarp-asteroid-radio-waves-science-1849932048 An Asteroid Is Passing Earth Today, so Scientists Are Shooting It With Radio Waves

Zack Zwiezen

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