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Mon, 02 Aug 2021
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Fireball 5

Geologists identify rare meteorite impact site in Dakota County

Shocked Quartz
© Courtesy of Julia Steenberg
Small grains of shocked quartz buried deep under ground in Inver Grove Heights, Minn., are evidence of an ancient meteorite impact in the area
An area around Inver Grove Heights, Minn., is the site of an ancient meteorite crash, according to recent analysis by the Minnesota Geological Survey.

The discovery came as scientists were updating geologic maps of Dakota County. They identified anomalies in the rock record — certain layers appeared out of order or irregularly sized. This led to further examination and the identification of small grains of shocked quartz, which is known to be produced only by the extreme shock and compression of a meteorite impact or nuclear explosion.

"It's really exciting and new," geologist Julia Steenberg told MPR News host Cathy Wurzer. Steenberg and her colleagues are hoping to do more research to better understand the age of the impact and the size of the meteorite involved.

Globally, known meteorite impact sites are exceptionally rare. This is the first identified in Minnesota and one of fewer than 200 in the world.


Loud mysterious boom has residents of south-west Sydney, Australia scratching their heads

Mystery boom - stock
Experts are baffled by reports of an explosion heard across south-west Sydney with no identified sources nor any indication as to where it came from.

Authorities received multiple reports from residents saying they heard an "explosion" on Saturday night, but found no evidence of an explosion.

Fire and Rescue NSW and NSW police responded to the calls, but said they found nothing, not even a fire, to indicate an explosion had taken place.

Mystery surrounds the incident, with reports the sound was heard across Marrickville, Roselands, Bardwell Park, Campsie and Belmore.

Residents reported windows shaking, and that the sound was something like an explosion or a backfiring car, but with no visual indicators.

Fireball 4

Bright meteor fireball lights up night sky over Minnesota

Minnesota meteor fireball
© YouTube/American Meteor Society (screen capture)
The American Meteor Society (AMS) received 39 reports (event 2671-2021) about a meteor fireball seen over MN, ND, SD and WI on Sunday, May 9th 2021 around 08:03 UT.

For this event, it received 6 videos and one photo.

Fireball 4

Meteor fireball streaks across the Greater Antilles

Meteor seen across Puerto Rico at approximately 8:02 PM Friday 7th May 2021
© La Sociedad de Astronomía del Caribe
Meteor seen across Puerto Rico at approximately 8:02 PM Friday 7th May 2021
A bright meteor was spotted across the night skies of the Greater Antilles on Friday night. Those who spotted it say the brilliant meteor appeared as a "huge green ball with a long tail."

The meteor was visible from Puerto Rico, the Dominican Republic and Cuba at approximately 8:02 PM Friday 7th May 2021.

According to the Caribbean Astronomy Society (SAC), "It was a space rock of metallic content friction with our atmosphere."

Comet 2

New Comet C/2021 E3 (ZTF)

CBET xxxx & MPEC 2021-J71 , issued on 2021, May 06, announce the discovery of an apparently asteroidal object (magnitude ~19.5) on CCD images taken on March 09.5 UT with the 1.2-m Schmidt telescope at Palomar in the course of the "Zwicky Transient Facility" (ZTF) search program. This object has been found to show cometary appearance by CCD astrometrists elsewhere. The new comet has been designated C/2021 E3 (ZTF).

Stacking of 14 unfiltered exposures, 120 seconds each, obtained remotely on 2021, March 19.2 from Z08 (Telescope Live, Oria) through a 0.7 m f/8 Ritchey Chretien + CCD, shows that this object is a comet with a compact coma about 7" in diameter (Observers E. Guido, M. Rocchetto, E. Bryssinck, M. Fulle, G. Milani, C. Nassef, G. Savini, A. Valvasori).

Our confirmation image (click on it for a bigger version; made with TYCHO software by D. Parrott)
Comet C/2021 E3 ZTF
© Remanzacco Blogspot

Fireball 4

A huge, glowing fireball lights up the sky over Japan

A glowing object crossing the sky was captured on Monday night over the Fukuoka and Nagasaki prefectures in Japan. The phenomenon was captured on video by cameras in the area and seen by several witnesses who described it as a ball of light, pick up the chain NHK.

Satoshi Imamura, an expert in space issues, dispelled doubts about the nature of the object and explained that it was a bright shooting star known as a fireball or bolide. The intense luminosity occurs when dust and asteroid fragments in outer space enter the atmosphere and burn.


Meteor fireball spotted on deputy's dashcam in Collier County, Florida

A Collier County deputy captured a unique phenomenon on her dashcam while out on patrol this week.

Cpl. Nicole Medenwald saw a meteor, and rather than savor the memory, she got to review the proof!

The Collier County Sheriff's Office said she had just come from conducting a traffic stop. She repositioned her patrol car to face North 15th Street to watch for cars.

"I saw a green light and then it lit up the sky," Cpl. Medenwald said. "It reminded me of lightning at night the way the sky lit up."

Cpl. Medenwald said she's seen meteors before but has never seen one break the atmosphere and light up the sky.


Flaming meteor fireball seen in Oman's sky

The Sultanate on Wednesday evening saw the emergence of a flaming fireball in the sky over some regions.

Speaking exclusively to the Times of Oman, Yusuf bin Zahir Al Salmi, Official of Al Huwqain Astronomical Observatory, said: "Eyewitnesses from Al Huwqain, Wadi Bani Ghafir villages in the Wilayat of Rustaq in South Al Batinah Governorate and from the Wilayats of Ibri, Yanqul, and Dhank in Al Dhahirah Governorate, reported that at exactly 8:28 pm on Wednesday's evening the 15th of Ramadan, April 28, 2021, a very bright white light was seen tending to blue, penetrating clouds, starting from the northeast, heading to the southwest, and after a few seconds an explosion followed."

Fireball 2

Meteor fireball widely reported over southern France

Observers map - AMS event 2408-2021
© American Meteor Society (screen capture)
Observers map - AMS event 2408-2021
The American Meteor Society (AMS) received 406 reports (event 2408-2021) about a meteor fireball seen over Auvergne-Rhône-Alpes, Bourgogne-Franche-Comté, Centre-Val de Loire, Emilia-Romagna, Geneva, Liguria, Lombardia, Nouvelle-Aquitaine, Occitanie, Piemonte, Provence-Alpes-Côte d'Azur, Toscana and Vaud on Saturday, April 24th 2021 around 20:28 UT.

For this event, the AMS received one video.

Comment: Two further videos have been added to the AMS website.

Credit: Didine&Cec 13640

Credit: Aixam

This event has been detected by 9 cameras of the FRIPON network. All results obtained by this network for this event are available on the FRIPON Website.

Detection date: 2021-04-24 20:26 UT - Velocity: 21,245.40 m/s
Click the icons on the map for info about the stations. The trajectory computed by Fripon is represented by on the map.


Lyrid fireball over the Mediterranean (April 23)

This bright Lyrid meteor was recorded over Spain on 2021 April 23 at 6:03 local time (equivalent to 4:03 universal time). It overflew the Mediterranean Sea. The bolide was generated by a fragment (a meteoroid) from Comet C/1861 G1 (Comet Thatcher) that hit the atmosphere at about 165,000 km/h. It began at an altitude of about 114 km over the Mediterranean Sea, and ended at a height of around 60 km, after traveling about 53 km in the Earth's atmosphere.

The event was recorded in the framework of the SMART project, operated by the Southwestern Europe Meteor Network (SWEMN), from the meteor-observing stations located at La Hita (Toledo), Calar Alto (Almería), Sierra Nevada (Granada), La Sagra (Granada), and Sevilla.