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Planet Earth

Earth’s Magnetic North Pole May Have Just Officially Shifted

Earth’s magnetic north pole has been drifting so much in recent years that scientific estimates are no longer accurate for navigation, prompting the National Centers for Environmental Information to publish updated information nearly a year early.

It may sound apocalyptic, but generally speaking, the shift is no cause for alarm. Over the last 780,000 years, fossil records indicate that the poles have moved and switched a number of times, with no recognizable harm to living organisms. In fact, recent geological records even indicate that our magnetic field is weakening, a phenomenon that may or may not lead to geomagnetic pole reversal: the north and south poles could flip.

But even if this was the case, it doesn’t mean sudden volcanic outbursts or swarms of earthquake clusters. Life would continue as it is although changes to the magnetic field could have repercussions for smartphones, consumer electronics, and navigation technology.

The magnetic north pole’s movement over the past five decades. National Centers for Environmental Information

Federal organizations like NASA and the Federal Aviation Administration use something called the World Magnetic Model for navigational purposes as well as surveying and mapping, satellite tracking, and air traffic management. Because the magnetic north pole moves about 55 kilometers (34 miles) each year, governing agencies release updates to the model every five years. The most recent update wasn’t due until the end of this year, but unplanned variations in the Arctic region have spurred authorities to push for a new update sooner than planned.

“The declination has changed just over 2.5 degrees over the past 22 years since Denver opened,” Heath Montgomery, former Denver International Airport spokesperson, said in a statement after the last update.

Magnetic declination – the angle between the magnetic north and true north – changes over time. Since 1831, the magnetic north pole in northern Canada has been moving across the Arctic toward Russia.

“The slowly moving plates act as a kind of tape recorder leaving information about the strength and direction of past magnetic fields. By sampling these rocks and using radiometric dating techniques, it has been possible to reconstruct the history of the Earth’s magnetic field for roughly the last 160 million years,” wrote the National Oceanic and Atmospheric Administration (NOAA) in a blog post. “If one ‘plays the tape backwards,’ the record shows Earth’s magnetic field strengthening, weakening, and often changing polarity.”

Source www.iflscience.com

Planet Earth

An engineer who believed in the theory of a flat earth died when his rocket was launched

Mike Hughes, nicknamed Mad Mike, a well-known amateur engineer flying on makeshift rockets, died during one of his experiments on Saturday in the United States, the Los Angeles Times reported citing his agent.

Mad Mike was remembered by the general public for his faith in the theory of a flat Earth. In 2018, he told the Associated Press that the Earth was “Frisbee-shaped” and that he intended to fly into space to make sure it was.

On Saturday, Hughes planned to climb five thousand feet on his makeshift desert rocket near the town of Barstow, California. The event was supposed to be shown in the special program “Home Astronauts”. 

The video of spectators who arrived to watch the launch captures the launch of his rocket, the parachute that did not work on time and the fatal fall of the amateur astronaut.

Mike’s agent suggested that Mike might have lost consciousness during the launch of the rocket and as a result did not activate the parachute. He fell 2600 feet from the place where the rocket was launched.

It is worth noting that Mike was going to launch his home-made steam rocket in August last year, but as a result, his plans were postponed.

For decades, Hughes has performed tricks from jumping in a limousine over long distances to flying on rockets made from improvised materials. In 2018, Mike’s rocket rose to a height of 1.9 thousand feet and then landed in the Mojave Desert.

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Planet Earth

How our planet appeared: an unexpected scenario of the origin of earth

© Photo: ZUMAPRESS.com, Globallookpress

Our planet could appear in a completely different scenario, which differs from previously proposed versions.

In the early stages of the existence of the solar system, the Earth took much less time to finally form. This is the conclusion made by researchers from the University of Copenhagen after analyzing iron isotopes found in meteorites. It is reported by Science Alert.

According to the results of a new study, the Earth has become a full-fledged planet in 5 million years – this is several times faster than previous models believed. An interesting fact remains that scientists are not yet completely sure how the formation of planets proceeds. As long as there is a general picture: a huge cloud of dust and gas revolves around the stars, which eventually turns into a flat disk, the elements of which become planets over time – therefore, objects in the solar system are approximately in the same plane around the sun.

Planets appear when the particles of cosmic dust and stones adhere – when they become larger, the force of gravity also grows, which helps to attract more and more objects. Ultimately, such interaction leads to the appearance of planets. It was believed that this requires several tens of millions of years, at least for the Earth.

In composition, the Earth differs from other objects in the solar system – it contains much less Fe-54, an isotope of iron. A similar composition is observed in carbonaceous chondrites.

If the Earth had formed over a longer period, its mantle would have contained more remnants of various meteorites, including those with a high Fe-54 content. Accordingly, the core of the planet should have appeared early enough due to rain from space dust. Scientists do not exclude that the rapid formation of planets, such as this, may be just one of the factors that determine the appearance of life on them.

“If the theory of early planetary accretion (the process of increasing the mass of a celestial body through the attraction of matter is really true, then water is most likely just a by-product of the formation of a planet similar to the Earth – this is more likely to find signs of life elsewhere in the universe,” cosmochemist Martin Bizzaro says.

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Planet Earth

Space sailing ship sent amazing pictures of the Earth

The space ship LightSail 2, launched in June last year, received amazing photos of our planet.

LightSail 2 is a project of the Planetary Society; It was launched in June 2019 with the SpaceX Falcon Heavy booster rocket. Unlike other spacecraft, the solar sailboat does not rely on traditional rocket engines – it uses solar energy.

The device has been operating in Earth orbit for about eight months; all in all, its mission should last about a year. According to experts who studied the work of LightSail 2, the design of a space sailboat with solar panels on only one side caused a number of technical problems, so in their opinion, future similar vehicles should have solar panels on both, Space.com reports.

The Planetary Society showed several images taken by the LightSail 2 camera. The solar sail of the apparatus is partially visible on them (in general, the sail area is about 32 square meters), and our planet is also visible.

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