Fireballs
NASA just announced when a giant asteroid, known as JF1, would hit Earth if it continues on its current trajectory - and it's not too far from now.
The American space agency predicted that a 128-meter-long space rock - the size of the Great Pyramid of Giza in Egypt - could collide with our planet on 6 May 2022, potentially causing devastating consequences by wiping out an entire city just in seconds and causing millions of deaths.
As JF1 is believed to strike the Earth with a power of 230 kilotons of TNT - 15 times higher than the atomic bomb dropped on Hiroshima that was equivalent in energy to 15 kilotons of TNT.

Gennady Borisov has been contacted by the International Astronomical Union about his latest discovery.
The new comet, traveling at roughly 30km per second in the patch of sky between the Lynx and Cancer constellations, marks the ninth stellar object Borisov has discovered. Unlike his previously discovered comet, dubbed 2I/Borisov, this one is a resident of our solar system.
"I discovered a new comet in early November. I have just received a letter from the Minor Planet Center of the International Astronomical Union. This is not an interstellar comet. It's an ordinary one, which is a solar system object. It got the name C2019V1 (Borisov). This is a confirmed discovery," Borisov told TASS news agency.

Earthcam footage captures the moment in which a fireball streaks across the Missouri nighttime sky near St. Louis' Gateway Arch.
Local news station KMOV reported that the jaw-dropping meteor was spotted "from Columbia to St. Charles County and into St. Louis County and south St. Louis City," before disappearing into the night over Wellsville.
Reports of a fireball - a bright, slow-moving meteor - began to emerge at roughly 8:45 p.m. local time, with some residents reporting that the flashing rock was accompanied by the sound of a loud boom.
Comment: No, no, no. You CANNOT predict these things.
These are NOT the teensy-weensy flits you see during meteor showers. Those are 'shooting stars'.
These other things are LARGE CHUNCKS OF SPACE ROCK EXPLODING IN THE ATMOSPHERE.
Both stations reported that local residents saw a flash of light and loud noise at about 8:55 p.m. local time (9:55 p.m. ET). Twitter user David Vergel posted footage from an EarthCam aimed at the city's iconic Gateway Arch of the object streaking through the atmosphere, while other locals appear to have picked up the event on home security cameras. The Northern Taurid meteor shower, which is known for brighter-than-usual meteors called fireballs, was expected to peak on Monday night into the early hours of Tuesday with St. Louis just on the eastern edge of the highest visibility region on the map, KSDK reported.
I was watching an @EarthCam camera from St. Louis, Missouri about 30 minutes ago and saw a #meteor! pic.twitter.com/PVAvIGlALF
— David Vergel (@DavidVergel97) November 12, 2019
The meteor was seen about 7:40 p.m. from New York to North Carolina, with several reports from the D.C. area, including Leesburg and Vienna.
The fireball (another term for a very bright meteor), is likely part of the annual Taurid meteor shower, which peaks this week.
Every year from September to November, the Earth passes through a broad stream of debris left by Comet Encke, according to NASA.
"I didn't see anything," a resident said. "(I) just heard the loud explosion sound and then, we started seeing sirens."
Channel 9's Tina Terry talks to residents about the disruption and asks officials where it came from.
People living across the north of the Coventry were shocked when they heard the loud bangs in the early hours.
Residents in Coundon, Allesley and even in Radford and Keresley were woken and startled by the noise.
Across social media, more than one bang was heard, with people saying it sounded louder than a firework.
One said: "I've just heard a massive bang", while another said "what the hell was that."
Former Channel 2 reporter and now Cobb County spokesperson Ross Cavitt shared a video of a flash in the sky Wednesday night, from his dashboard camera.
He said it was even more impressive in person.
It was a shooting star. Basically, what that is is a meteor.
"What happens in the atmosphere in space is you have all these space rocks, debris just kind of orbiting around Earth's atmosphere. Then sometimes they get pulled down into the atmosphere,"Severe Weather Team 2 Meteorologist Brian Monahan said.
Comment: The American Meteor Society received 39 reports of this fireball. It was also seen in North and South Carolina, Tennessee, Virginia and West Virginia.
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