AstronomyEarthSky | Top 10 stories of 2022 from EarthSky

EarthSky | Top 10 stories of 2022 from EarthSky

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An astronomer found an asteroid roughly 2 hours earlier than it struck Earth’s environment over the Arctic Ocean on March 11, 2022. The fireball on this picture – from January 21, 1999 – is an instance of what the 2022 meteor may need seemed like, if any witnesses had been within the Arctic to look at it. Picture through Czech station No. 16 of the European Fireball Community/ Planetary Science Institute.

High 10 tales of 2022

From a 12 months that noticed a profitable mission for Artemis 1 (first step in our human return to the moon) and a space mission that moved an asteroid – to dried-up lakes that revealed human bodies and more – there’s been loads to speak about! With an energetic sun, planetary conjunctions and eclipses, each space and Earth information saved us enthralled this 12 months. Come together with us as we evaluation our prime 10 tales of 2022.

Check out the 2023 EarthSky lunar calendar. A unique and beautiful poster-sized calendar showing phases of the moon every night of the year. It makes a great New Years gift.

#1 – Asteroid discovered hours before Earth impact

The primary of two newly found asteroids to hit Earth in 2022, EB5 arrived north of Iceland with no safety cameras to look at it fritter away within the environment. Hungarian astronomer Krisztián Sárneczky on the Piszkésteto Mountain Station – a part of Konkoly Observatory close to Budapest – found the small asteroid on March 11, 2022, simply two hours earlier than it struck Earth’s environment at 21:22 UTC. The asteroid is believed to have began out about 10 toes (3 meters) extensive. Read more about EB5.

#2 – Asteroid hit Canada, may have dropped meteorites

Astronomers noticed an asteroid simply hours earlier than it struck Earth on November 19, 2022, close to Lake Erie in Canada. It was not the first time this 12 months astronomers found a rock from space simply hours earlier than it hit Earth. However this time, it entered Earth’s environment over a populated space, crossing the skies of Toronto, Canada. Now we have video and witnesses who noticed, heard and felt the affect. And astronomers stated locals could possibly discover meteorites from the affect. Read more about the Canadian impact.

#3 – Geomagnetic storms: Will you lose power where you live?

When the following large geomagnetic storm comes, will you lose energy? Researchers studied previous storms, together with essentially the most intense storm of the space age – the March 1989 geomagnetic storm – to find out future threat. The 1989 storm prompted a nine-hour blackout in Quebec, whereas in components of the USA it prompted disruption to electrical energy and broken a high-voltage transformer. The researchers created maps based mostly on sturdy, historic geomagnetic storms and concluded that, in the USA, among the extra susceptible areas embrace the Mid-Atlantic, Northeast, and the higher Midwest. Read more about the geomagnetic storm map.

Map of the United States with colored dots on the upper tier and stretching east down into Florida.
On this map, the dots present the place the March 1989 geomagnetic storm induced essentially the most currents in North America, leading to corresponding energy disruptions. The best focus was over the Northeast, Mid-Atlantic and higher Midwest. A brand new research appears at historic geomagnetic storms to find out who’s most in danger. Picture through AGU.

#4 – Why are the Voyager spacecraft getting closer to Earth?

For just a few months every year, the distances between the Voyager spacecraft and Earth really lower. You would possibly know that each Voyager spacecraft had been launched into space within the Seventies and visited the outer planets by the Nineteen Eighties. They’ve been heading out of our solar system ever since. In 2012, Voyager 1 entered interstellar space. Then, in 2018, NASA introduced that Voyager 2 had entered interstellar space, too. They’re each headed outward, by no means to return to Earth. So, how do they get nearer from February to June? The reply pertains to Earth’s orbit. Read more.

#5 – July 8 … 99% of the world’s population in sunlight simultaneously?

Konstantin Bikos, lead editor at timeanddate.com, fact-checked the declare that 99% of the world’s inhabitants obtain daylight concurrently on July 8. Timeanddate shared that it’s technically true that 99% of the world’s inhabitants experiences some daylight at 11:15 UTC on July 8. However a few of these experiencing it should suppose it’s the evening. Read more.

#6 – Did alien technology crash in Pacific in 2014? Harvard astronomer says ‘maybe’

Harvard astronomer Avi Loeb is understood for considering out of the field. For instance, in 2018, he advised that ‘Oumuamua – the thing from a distant solar system that’d handed close to our sun the 12 months earlier than – is perhaps alien expertise. On April 20, 2022, in an article in The Debrief, Loeb advised {that a} meteor identified to have crashed within the Pacific Ocean in 2014, may additionally be expertise from an alien civilization. Read more about Loeb’s claims.

#7 – ‘Hobbits’ among us? An anthropologist says maybe

Anthropologist Gregory Forth on the College of Alberta in Canada authored a controversial opinion piece in The Scientist on April 18, 2022. In it, he claims {that a} relic inhabitants of elf-like historical hominins would possibly nonetheless roam the jungles of a distant Indonesian island. Read more about the hobbits that may walk the Earth with us.

#8 – A black hole jet aimed at Earth

When astronomers noticed an immensely brilliant flash of sunshine in deep space earlier this 12 months, they naturally questioned what prompted it. Now, researchers on the Massachusetts Institute of Expertise (MIT) and different establishments from all over the world say they’ve solved the mystery. The flash – brighter than 1,000 trillion suns – originated from a jet of fabric capturing out from a supermassive black hole. They are saying the black hole was possible devouring a star. The flash of sunshine was so brilliant as a result of the jet was aimed towards the Earth. Read more about this black hole jet aimed at Earth.

#9 – A moment of global darkness on December 6

Konstantin Bikos and Graham Jones of timeanddate.com explored the concept of when the vast majority of individuals on Earth expertise nighttime directly. They found that the second of most darkness occurs at 19:56 UTC on Tuesday, December 6, 2022. At that on the spot, the sky is totally darkish for about 85.92% of the world’s inhabitants. At that second, evening reigns throughout the three most populous continents: Asia, Africa, and Europe (with very minor exceptions). However relying in your definition of evening, there are another choices. Read about them here.

Flat map of Earth showing darkness over Eastern Hemisphere.
The second of world darkness – for the most important proportion of Earth’s human inhabitants – fell at 19:56 UTC on Tuesday, December 6, 2022. Stunned? Contemplate that China and India are Earth’s 2 most closely populated nations. And each had been in darkness at the moment. In the meantime, the Americas, New Zealand, and most of Australia had been bathed in daylight. Now think about that North and South America mixed solely make up about 13% of the worldwide inhabitants. Picture through timeanddate.com.

#10 – Astronomers confirm a 2nd Trojan asteroid for Earth

Remember the excitement in late January, when the James Webb Area Telescope reached Lagrange level 2, or L2? That’s a gravitationally steady level within the Earth-sun system the place a spacecraft (or a pure object) can orbit the sun whereas sustaining its place relative to the sun and Earth. There are 5 Lagrange points. Two of those factors – L4 and L5 – are on Earth’s orbit across the sun. Asteroids positioned on the Earth-leading Lagrange level (L4) and the Earth-trailing Lagrange level (L5) are identified to astronomers as Trojan asteroids, or Earth Trojans. Astronomers already knew Earth had one Trojan. Now we all know it has two, with the second announced on February 1, 2022. Read more about the new Earth Trojan, labeled 2020 XL5.

Telescope dome in snowcapped mountain range and a large oval drawn in the sky.
We will’t see the brand new Earth Trojan asteroid – introduced in February, 2022 – in our sky. It’s exceedingly dim. But when this asteroid (labeled 2020 XL5) left a visual observe on our sky’s dome, over time we’d see its movement as a giant oval. This imagined view is from Cerro Pachón in Chile, the place astronomers confirmed that the asteroid 2020 XL5 orbits at L4. A Lagrange point within the Earth-sun system is the place objects have a tendency to remain mounted relative to the sun and Earth. It’s solely the 2nd-known Trojan asteroid for Earth. Picture through NOIRLab/ NSF/ AURA/ J. da Silva.

Backside line: The highest 10 tales of 2022 is a evaluation of what we’ve realized prior to now 12 months from our dwelling planet, Earth, out to the huge universe.

Available now! 2023 EarthSky lunar calendar. A unique and beautiful poster-sized calendar showing phases of the moon every night of the year! And it makes a great gift.



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