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NASA warned that an asteroid the size of a 10-story building would pass near the Earth halfway to the moon.
The asteroid 2019 GC6 will pass Thursday at less than 30,000 km from the Earth, safely avoiding a devastating collision.
NASA warned that the orbital trajectory of the asteroid would mean that it could still pose a risk in the future, with estimates suggesting that it could be between 7.5 and 30 meters long.
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Shortly after it was discovered by astronomers at the Catalina Sky Survey in Arizona on April 9, scientists at NASA's California Jet Propulsion Laboratory put it on a list of asteroids at risk of collision with the Earth. in the next 100 years.
It is difficult to accurately predict its exact trajectory, but it is expected to return close to Earth in 2034, 2041 and 2048.
1/30 Hitting Africa
"The striking color and texture of Africa Illizi, Algeria"
2/30 Favorite reef
"Every day spent in space is a great day, but especially today. I had the chance to talk to one of my inspiring heroes, Professor Stephen Hawking and his amazing daughter, Lucy, who designed the main space journal to allow children to talk about STEM topics. In addition to talking about dark matter, quantum entanglement, extraterrestrial life and nanocraft powered by a beam of light, we also witnessed an incredible passage over the Bahamas and this favorite emoticon of my smile. at the reef "
3/30 The northeastern coast of Russia
"The sunrise is approaching the frozen northeastern coast of Russia"
4/30 Hello London
"Hello London! Want to run? 🙂 #LondonMarathon"
5/30 bahamas
"50 shades of blue: Bahamas"
6/30 Yinchuan
"Snow on the mountains next to Yinchuan in China"
7/30 Rocket flames in Africa
"Is it just me or do I see flames of rockets over there? These strange terrestrial elements are found in the desert of Erg Iguidi, with its yellow sandbands extending from Algeria in northern Mauritania in the Sahara "
8/30 Beautiful colors
"The sunlight reflects the beautiful colors of this Himalayan lake"
9/30 The real Everest
"The real thing: found the Everest! The last image has turned out to be the third highest mountain in Kanchengjunga"
10/30 Go Exomars
"Go #Exomars – Have a great mission Earth has more in common with Mars than you think …" #AfricaArt "
11/30 Tenerife
"Incredibly clear view of Tenerife"
12/30 Midday winter sun
"A winter sun at noon lights the snowy peaks of Greenland"
13/30 Sand dunes
"Great texture in these huge sand dunes, Saudi Arabia"
14/30 Dragon Dam
"The dam gives this river the appearance of a dragon's tail." Oahe Dam north of Peter, in South Dakota, USA (North is right) "
15/30 Smoking volcano
"A spotted volcano smokes this morning on the east coast of Russia – the heat has melted snow"
16/30 New Zealand
"New Zealand is beautiful in the sun.The center of Mt Cook left with the Grand Plateau ahead and Mt Tasman (3,497 m) to the right of the Grand Plateau.The Fox Glacier in the middle, then Franz Josef turn right, Tasman Lake (the largest front) is at the foot of the Tasman Glacier along the front, and the Hooker Glacier flows behind Mt Cook down to meet the Mueller Glacier on the left of the photo. is at the front of the photo in parallel with the Tasman Glacier "
17/30 Blooming plankton
"Another good pass over Patagonia and a proliferation of plankton swirling off the coast"
18/30 Alaska
"We do not often have such a clear view of Alaska"
19/30 Lights along the Nile
"Lights along the Nile extending off Cairo"
20/30 Kamchatka
"The" belt of fire "of the Pacific is visible among the volcanoes of Kamchatka, Russia"
21/30 cumulonimbus
"I guess there was an awesome storm under this cloud of cumulonimbus"
22/30 Night Sahara
"Night Sahara – you can really see how thin the Earth's atmosphere is in this picture"
23/30 Japan
"Tokyo and the Japanese coast This picture shows most of Japan with the largest mass of light corresponding to Tokyo.The white lights on the left are fishing boats"
24/30 Morning Sun Volcanoes
"Morning sun hitting active volcanoes in Guatemala"
25/30 Tapajos River
"The vast waters of the Tapajos River, Amazonia"
26/30 Patagonia
"The beautiful glacial river water flowing from this Patagonian ice floe of Lake Viedma, to the west is rising"
27/30 Dubai Palms
"Less photobomb #dragon this time …"
28/30 Sediment in Ethiopia
"Sediment is pouring into this mountain lake in Ethiopia"
29/30 Italy
"We have phases of" short nights "on the International Space Station – the sun is almost always visible at this time, and there is no price to guess where …"
30/30 Panama Canal
"From one ocean to the other – ships crossing the Panama Canal"
1/30 Hitting Africa
"The striking color and texture of Africa Illizi, Algeria"
2/30 Favorite reef
"Every day spent in space is a great day, but especially today. I had the chance to talk to one of my inspiring heroes, Professor Stephen Hawking and his amazing daughter, Lucy, who designed the main space journal to allow children to talk about STEM topics. In addition to talking about dark matter, quantum entanglement, extraterrestrial life and nanocraft powered by a beam of light, we also witnessed an incredible passage over the Bahamas and this favorite emoticon of my smile. at the reef "
3/30 The northeastern coast of Russia
"The sunrise is approaching the frozen northeastern coast of Russia"
4/30 Hello London
"Hello London! Want to run? 🙂 #LondonMarathon"
5/30 bahamas
"50 shades of blue: Bahamas"
6/30 Yinchuan
"Snow on the mountains next to Yinchuan in China"
7/30 Rocket flames in Africa
"Is it just me or do I see flames of rockets over there? These strange terrestrial elements are found in the desert of Erg Iguidi, with its yellow sandbands extending from Algeria in northern Mauritania in the Sahara "
8/30 Beautiful colors
"The sunlight reflects the beautiful colors of this Himalayan lake"
9/30 The real Everest
"The real thing: found the Everest! The last image has turned out to be the third highest mountain in Kanchengjunga"
10/30 Go Exomars
"Go #Exomars – Have a great mission Earth has more in common with Mars than you think …" #AfricaArt "
11/30 Tenerife
"Incredibly clear view of Tenerife"
12/30 Midday winter sun
"A winter sun at noon lights the snowy peaks of Greenland"
13/30 Sand dunes
"Great texture in these huge sand dunes, Saudi Arabia"
14/30 Dragon Dam
"The dam gives this river the appearance of a dragon's tail." Oahe Dam north of Peter, in South Dakota, USA (North is right) "
15/30 Smoking volcano
"A spotted volcano smokes this morning on the east coast of Russia – the heat has melted snow"
16/30 New Zealand
"New Zealand is beautiful in the sun.The center of Mt Cook left with the Grand Plateau ahead and Mt Tasman (3,497 m) to the right of the Grand Plateau.The Fox Glacier in the middle, then Franz Josef turn right, Tasman Lake (the largest front) is at the foot of the Tasman Glacier along the front, and the Hooker Glacier flows behind Mt Cook down to meet the Mueller Glacier on the left of the photo. is at the front of the photo in parallel with the Tasman Glacier "
17/30 Blooming plankton
"Another good pass over Patagonia and a proliferation of plankton swirling off the coast"
18/30 Alaska
"We do not often have such a clear view of Alaska"
19/30 Lights along the Nile
"Lights along the Nile extending off Cairo"
20/30 Kamchatka
"The" belt of fire "of the Pacific is visible among the volcanoes of Kamchatka, Russia"
21/30 cumulonimbus
"I guess there was an awesome storm under this cloud of cumulonimbus"
22/30 Night Sahara
"Night Sahara – you can really see how thin the Earth's atmosphere is in this picture"
23/30 Japan
"Tokyo and the Japanese coast This picture shows most of Japan with the largest mass of light corresponding to Tokyo.The white lights on the left are fishing boats"
24/30 Morning Sun Volcanoes
"Morning sun hitting active volcanoes in Guatemala"
25/30 Tapajos River
"The vast waters of the Tapajos River, Amazonia"
26/30 Patagonia
"The beautiful glacial river water flowing from this Patagonian ice floe of Lake Viedma, to the west is rising"
27/30 Dubai Palms
"Less photobomb #dragon this time …"
28/30 Sediment in Ethiopia
"Sediment is pouring into this mountain lake in Ethiopia"
29/30 Italy
"We have phases of" short nights "on the International Space Station – the sun is almost always visible at this time, and there is no price to guess where …"
30/30 Panama Canal
"From one ocean to the other – ships crossing the Panama Canal"
It is not uncommon for rogue space debris to collide with Earth, with tons of cosmic material passing through the atmosphere each day.
The vast majority burns before reaching the ground, but every ten years or so, a larger asteroid collides with the Earth.
In 2013, an asteroid 20 m in diameter penetrated the Earth's atmosphere over the city of Chelyabinsk in Russia, causing a massive explosion.
A subsequent study calculated that she had released more than 30 times the explosive energy of the Hiroshima bomb, which has allowed more than 1,500 people in the area to seek treatment.
"If humanity does not want to follow the path of the dinosaurs, we must study an event like this in detail," said Professor Qing-Zhu Yin of the University of California at the University of California. time.
"Chelyabinsk serves as a unique calibration point for high energy meteorite impact events for our future studies."
But because of their relatively small size, asteroids are notoriously difficult to spot and often remain undetected until a few days before passing or colliding with the Earth.
The site of impact of the main mass of the Chelyabinsk meteorite in the lake ice Chebarkul (PENNSYLVANIA)
The astronomers of the Jet Propulsion Laboratory have recently described this phenomenon as a kind of coal stain in the night sky.
"Objects close to the Earth [NEOs] are intrinsically weak because they are for the most part very small and far from us in space. Add to that the fact that some of them are as dark as the printer toner and it is very difficult to try to spot them in the dark of space, said Amy Mainzer, head of NASA's asteroid research mission at the lab.
"If we find an object just days away from the impact, it significantly limits our choices. Therefore, in our research efforts, we focused on NEO's research when they are further away from Earth, giving them maximum time and allowing them range of mitigation opportunities. "
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