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Tue, 01 Dec 2020
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Fireballs

Question

India's Lake Lonar turns pink baffling scientists and locals

Maharashtra's Lonar Lake has turned pink overnight, leaving scientists and locals baffled about the reasons behind this change. Located in the Buldana district about 500 km from Mumbai, the Lonar crater had formed due to a meteorite, which hit the earth about 50,000 years ago.
Lonar Lake, India
© Outlook India
Water in the Lonar Lake, which has now turned Pink
This is the world's third-largest crater formed due to a meteorite strike. People in the area were considerably surprised when the lake's normal bluish-green water turned a pinkish red.

Umbrella

Reports of 'explosion' like noise heard across Waterford, Ireland

Waterford, Ireland
© WLR FM
Air Traffic Control at Waterford Airport say they haven't received reports of unusual activity in the skies of Waterford City.

They were responding to claims that a very loud noise, described as being like an explosion was heard at around half past ten last night.

Mystery surrounds the noise, heard by people in the city centre, Ferrybank and in the Dunmore Road and Tramore Road areas.

It has been described by some who heard it as a 'sonic boom'.

People took to social media to describe the incident, however Waterford Gardai say they didn't receive any reports from the public.

One Facebook user in Ursuline Court caught the sound on video.

Fireball 4

Spectacular meteor fireball lights up the night sky over Pilbara, Western Australia

Green meteor fireball over WA
© Shaz Hussien
Residents were left stunned after a mysterious green glow (pictured) lit up the night sky on Sunday evening
Pilbara residents have been treated to an astronomical spectacle overnight after a green fireball lit up the night sky.

The meteor was spotted at 12.46am on Monday morning and was caught on camera by shocked onlookers — including the Karratha Police — in Port Hedland and Cape Preston, near Karratha.

Matt Woods from the Perth Observatory said the green colour was the result of magnesium from the rock burning up as it entered the atmosphere.

It was likely no bigger than a pebble and was probably travelling between 16-50km per second.

"So that's like going from the Perth Hills to the CBD in a second," Mr Woods said.


Fireball 4

Two meteor fireballs back to back over California

Fireball over CA
© Tanya C.
The AMS received over 110 reports so far about a fireball event that occurred over California (LA area) on June 10th, 2020 around 3:33 Universal Time (June 9th, 2020 08:33pm PDT). We also received nearly 90 reports about a similar event that occurred the next day North of San Francisco, CA. This second event occurred on June 11th 2020 around 03:51 Universal Time (June 10th, 2020 08:51pm PDT)

Estimated 3D Trajectories

The preliminary trajectories computed based on all the reports submitted to the AMS so far shows that the tow fireballs were mainly travelling from
East to West. The first one (AMS#2779-2020)

Trajectory1
© AMS
Trajectory2
© AMS


Fireball, Meteorite...?


Several thousand meteors of fireball magnitude occur in the Earth's atmosphere each day. The vast majority of these, however, occur over the oceans and uninhabited regions, and a good many are masked by daylight. Those that occur at night also stand little chance of being detected due to the relatively low numbers of persons out to notice them.

Comment: YouTube user 'Radium3D' captured the June 10th fireball from Carlsbad:




Fireball 3

Bright fireball seen over Otaga Peninsula, New Zealand spurs rescue call

Daytime meteor - stock image
© meteoriteclub.com (stock image)
A bright "orange and green" shining light over the Otago Peninsula has sent emergency services scrambling.

A police spokeswoman said a Highcliff Rd resident called about 7.15am when they thought they saw a flare in the Sandfly Bay area.

Police immediately alerted Dunedin Search and Rescue, Maritime New Zealand and the Coastguard of a possible rescue situation.

"Maritime put calls out, but there were no boats on the water and no calls [for help] had come in through their system.

"We put all the calls out, but obviously to no avail."

Fireball 4

Meteor fireball lights up skies in eastern US, burns so bright it was seen from Canada

Tennessee meteor
© Austin R./Amsmeteors.org
A brilliant fireball lights up the night sky over Knoxville, Tennessee, in this cell phone video captured from a moving vehicle by witness Austin R. at 9:42 p.m. EDT on June 7, 2020 (0142 GMT June 8).
Stunning video shows an incredibly bright fireball lighting up the skies above Tennessee, but the as-yet-unexplained phenomenon was so bright that it was visible from as far north as Canada.

The American Meteor Society received at least 120 reports from 12 states across the US -and several from Ontario in Canada- about an extremely bright object in the sky. Despite the number of observers, so far only one video of the fireball has appeared online.


Fireball 2

Home security camera records loud boom, flash of light over Altoona, Pennsylvania

Loud boom flash in PA
© WQAD
A home security camera recorded the moments a large bang, followed by a flash of light occurred over the skies of Altoona, Pennsylvania on June 1, 2020:


Comet 2

New Comet C/2020 K7 (PANSTARRS)

CBET 4790 & MPEC 2020-L09, issued on 2020, June 02, announce the discovery of a comet (magnitude ~20) in four 45-s w-band CCD images obtained with the Pan-STARRS1 1.8-m Ritchey-Chretien reflector at Haleakala. The new comet has been designated C/2020 K7 (PANSTARRS).

We performed follow-up measurements of this object while it was still on the PCCP webpage.

Stacking of 8 unfiltered exposures, 180 seconds each, obtained remotely on 2020, June 02.2 from X02 (Telescope Live, Chile) through a 0.6-m f/6.5 astrograph + CCD, shows that this object is a comet with a compact coma about 6" in diameter and a tail 3" long in PA 306 (Observers E. Guido, M. Rocchetto, E. Bryssinck, M. Fulle, G. Milani, C. Nassef, G. Savini).

Our confirmation image (click here for a bigger version)

Comet C/2020 K7
© Remanzacco Blogspot

Fireball 4

Bright green fireball falls from the sky in North Texas

Fireball over N TX
© NBC News/Samantha Deann Pinson
A North Texas family's home security camera was recording when a giant fireball fell from the sky Thursday night.

Samantha Deann Pinson shared the video pointed at her driveway in Burleson, which showed the green ball of light streak across the frame.


Fireball 3

Ancient accounts of 'Death from Above'

Meteorite Barage
© John Martin/Wikimedia Commons
Evidence suggests that a devastating barrage of meteorites rained down on the Dead Sea city of Tall el-Hammam in what is now Jordan. And, according to some researchers who think Tall el-Hammam was the biblical city of Sodom, that scenario could explain its destruction.
When we stargaze, we bask in photons that have traveled for many millennia before reaching our eyes. To us, the stars appear fixed on a so-called celestial sphere that encapsulates our entire earthly existence.

The truth, of course, is that no such sphere exists. Instead, stars and galaxies are scattered through the cosmos at distances so great they're incomprehensible to us.

But not all celestial phenomena exist so far away. Every day, shooting stars fail to recognize a boundary between space and Earth, dropping rocks from above — and often with dramatic results.

Our planet is vast, so meteorites typically don't concern us. But every once in a while, these objects actually strike humans and our property. Based purely on statistics, researchers estimate that a space rock should strike a human roughly once every nine years. And with those odds, you'd expect people to get killed by meteorites fairly often.

"I do strongly suspect that stats on 'death by asteroid' have been severely undercounted through human history," NASA Planetary Defense Officer Lindley Johnson told Astronomy via email. "It's only been in the last half century or so that we've even realized that such a thing could happen."

However, researchers still have not found a single confirmed case of death by space rock. But that's not to say we haven't come close. Modern history is full of near misses. On many occasions, space rocks have exploded over populated areas and sent thousands of meteorites raining down.

One of the most recent and well-known examples occurred in Chelyabinsk, Russia, in 2013, when a house-sized asteroid exploded over the city and injured some 1,200 people. Further back, on Jan. 30, 1868, a meteor exploded outside a town called Pultusk, near Warsaw, Poland, creating a literal meteor shower: More than 100,000 stones fell from the sky. The biggest recovered meteorite (a fragment of a space rock that makes it to the ground) weighed 20 pounds. It's the largest meteorite fall on record.