We received 14 reports about a fireball seen over British Columbia, OR and WA on Wednesday, March 1st 2023 around 08:45 UT.

For this event, we received 2 videos.

We received 174 reports about a fireball seen over Auvergne-Rhône-Alpes, Île-de-France, Baden-Württemberg, Bourgogne-Franche-Comté, Bruxelles, Drenthe, England, Esch-sur-Alzette, Friesland, Gelderland, Grand Est, Hauts-de-France, Hessen, Kanton Esch an der Alzette, Limburg, Noord-Brabant, Noord-Holland and Nordrhein-West on Tuesday, February 28th 2023 around 23:24 UT.

For this event, we received 2 videos.

We received 12 reports about a fireball seen over AR, IN, KS, KY, MO and TN on Tuesday, February 28th 2023 around 04:23 UT.

For this event, we received one video and 2 photos.

We received 17 reports about a fireball seen over IL, IN, MO, OH and WI on Sunday, February 26th 2023 around 01:04 UT.

For this event, we received 2 videos and 2 photos.

Researchers at the University of Jena and the German Electron Synchrotron DESY solve a 60-year-old mystery with a high-pressure study.
For the first time, researchers have recorded live and in atomic detail what happens to the material in an asteroid impact. The team of Falko Langenhorst from the University of Jena and Hanns-Peter Liermann from DESY simulated an asteroid impact with the mineral quartz in the lab and pursued it in slow motion in a diamond anvil cell, while monitoring it with DESY's X-ray source PETRA III. The observation reveals an intermediate state in quartz that solves a decades-old mystery about the formation of characteristic lamellae in material hit by an asteroid. Quartz is ubiquitous on the Earth's surface, and is, for example, the major constituent of sand. The analysis helps to better understand traces of past impacts, and may also have significance for entirely different materials. The researchers present their findings in the journal Nature Communications.

Asteroid impacts are catastrophic events that create huge craters and sometimes melt parts of Earth's berock. "Nevertheless, craters are often difficult to detect on Earth, because erosion, weathering and plate tectonics cause them to disappear over millions of years," Langenhorst explains. Therefore, minerals that undergo characteristic changes due to the force of the impact often serve as evidence of an impact. For example, quartz sand (which chemically is silicon dioxide, SiO₂) is gradually transformed into glass by such an impact, with the quartz grains then being crisscrossed by microscopic lamellae. This structure can only be explored in detail under an electron microscope. It can be seen in material from the relatively recent and prominent Barringer crater in Arizona, USA, for example.

"For more than 60 years, these lamellar structures have served as an indicator of an asteroid impact, but no one knew until now how this structure was formed in the first place," Liermann says. "We have now solved this decades-old mystery."

To do so, the researchers had spent years modifying and advancing techniques that allow materials to be studied under high pressure in the lab. In these experiments, samples are usually compressed between two small diamond anvils in a so-called diamond anvil cell (DAC). It allows extreme pressures - as prevalent in Earth's interior or in an asteroid impact - to be generated in a controlled manner.

We received 27 reports about a fireball seen over AZ, CA and NV on Wednesday, February 22nd 2023 around 13:37 UT.

For this event, we received one video.

With the aim of creating an appealing brand, the name of the " Domaine du Météore " winery near the town of Béziers in Southern France points to a local peculiar: one of its vineyards lies in a round, 200-metre-wide depression that resembles an impact crater. By means of rock and soil analyzes, scientists led by cosmochemist Professor Frank Brenker from Goethe University Frankfurt have now established that the crater was indeed once formed by the impact of an iron-nickel meteorite. In doing so, they have disproved a scientific opinion almost 60 years old, because of which the crater was never examined more closely from a geological perspective.

Countless meteorites have struck Earth in the past and shaped the history of our planet. It is assumed, for example, that meteorites brought with them a large part of its water. The extinction of the dinosaurs might also have been triggered by the impact of a very large meteorite.

Meteorite craters which are still visible today are rare because most traces of the celestial bodies have long since disappeared again. This is due to erosion and shifting processes in Earth's crust, known as plate tectonics. The "Earth Impact Database" lists just 190 such craters worldwide. In the whole of Western Europe, only three were previously known: Rochechouart in Aquitaine, France, the Nördlinger Ries between the Swabian Alb and the Franconian Jura, and the Steinheim Basin near Heidenheim in Baden-Württemberg (both in Germany ). Thanks to millions of years of erosion, however, for laypersons the three impact craters are hardly recognizable as such.

We received 197 reports about a fireball seen over IL, IN, MI, NY, OH, Ontario, PA and WI on Monday, February 20th 2023 around 01:51 UT.

For this event, we received 5 videos and one photo.

On February 12, around 10 pm EST (0300 GMT, February 13), an asteroid burned up rather dramatically over Europe.

Hours later, a space-focused citizen science volunteer group found a meteorite from the fireball event 2023 CX1.

Members of the science group Vigie-Ciel (translated to 'Sky Lookout') and a related project, FRIPON, another space-focused citizen science effort working with French scientific institutions like the Paris Observatory and the University of Paris-Saclay can be credited with confirming the exciting find.

Loïs Leblanc, an 18-year-old student, found the meteorite first. At 4:47 pm, Leblanc chanced upon "a dark stone barely level with the ground of a field in the town of Saint-Pierre-le-Viger," the group wrote in a blog post.

We received 30 reports about a fireball seen over Abruzzo, Basilicata, Calabria, Campania, Emilia-Romagna, Lazio, Ljubljana, Marche, Puglia, Toscana, Umbria and Zadarska županija on Tuesday, February 14th 2023 around 17:59 UT.

For this event, we received one video.