Fireballs
A meteor is always a cool thing to see, but it happens so fast, that it is hard to get a good look let along a good photo or video. The sighting and flash of a meteor blazing through Earth's atmosphere usually lasts just seconds. You have to be in the right place at the right time with cameras rolling to catch one, and that was exactly the case for Philip Strumsky, who was driving on the Glenn Highway between Hiland Road and the weigh station, when he saw a flash in the sky.
A loud bang, described as an intensely close clap of thunder, was heard across the Nanaimo region Tuesday around 11:30 a.m. Hundreds of people reported hearing it, covering Nanoose to Hammond Bay to College Heights.
"Heard it and felt it near Lantzville," Jamie Penner said on Twitter, noting it was unlike the sound of blasting coming from his area in recent months. "It sounded like someone opening a big sliding door in an apartment above you."
"For me it was like a loud and quick thunder sound!," Donald Louch said.
The fireball was recorded by observing stations operating in the framework of the SMART Project from the astronomical observatories of Calar Alto (Almería), Sierra Nevada (Granada) and Sevilla, Spain.
I performed follow-up measurements of this object, while it was still on the PCCP webpage. Stacking of 10 unfiltered exposures, 60 seconds each, obtained remotely on 2018, July 15.7 from Q62 (iTelescope network) through a 0.43-m f/6.8 astrograph + CCD, shows that this object is a comet with a diffuse coma about 15 arcsec in diameter.
My confirmation image (click on it for a bigger version)
The event was produced by a fragment from an asteroid that hit the atmosphere at about 65,000 km/h.
The meteorite would have fallen into the sea, with a mass of just a few grams.
According to EXOSS Citizen Science Project the meteor was seen by residents of Mossoró, Areia Branca, Assú, Baraúna, Severiano Melo and even cities in Ceará such as Icapui and Russas said they had observed the event.
Fireballs are meteors that burn much brighter than average meteors seen entering the earth's atmosphere. This is typical because of their larger size, but there are other factors that may make them brighter or appear in different colors.
Based on Fries' calculations of the meteorite's trajectory, the Nautilus narrowed its search to a 0.4 square-mile patch of the ocean. The area was first searched with sonar, then with two ROVs (remotely operated vehicles) named Argus and Hercules. The team then used "a suction hose sampler, magnetic plate, and sediment scoop" to pick up the most promising pieces of rock.
The two fragments found so far are thought to be the outer shell of the meteorite (called the fusion crust) which the Nautilus Live blog describes as "meteorite exterior that melted and flowed like glaze on pottery as it entered the atmosphere."
On March 7, three National Oceanic and Atmospheric Administration (NOAA) weather stations detected the fall of a meteorite about 15.5 miles (25 kilometers) off the coast of Washington state. "The fall was widely seen around local areas and widely heard around local areas - it came with some loud sonic booms," Marc Fries, the cosmic dust curator for NASA, told Live Science.
Fries estimated this fall might yield about 4,400 lbs. (2,000 kilograms) of meteorites. He also calculated the largest meteorite might weigh about 9.7 lbs. (4.4 kg) and have a diameter of about 5 inches (12 centimeters).
"This is the largest meteorite fall I've seen in 20-plus years of radar data," Fries said.
Experts suspect the lights, which were also seen in other parts of the country, were probably meteors flaming out in the upper atmosphere.
Melissa Mebus of Houghton Bay was one of seven women exercising at a regular bootcamp on Houghton Valley School's playing fields around 6.30am when they spotted a strange object overhead.
Richard Hall of the Phoenix Astronomical Society suspects mysterious lights may have been part of a meteor shower.
"Someone said 'oh my good look at that' and we all were all sort of like 'what the heck is that?'"
"We had long enough to see it. It didn't just shoot past ... we had about five seconds which is quite a lot if you are looking at something," Mebus said.














Comment: See also: Meteor fireball reported in the sky over Western Washington - UPDATE