Science
Related: About this forumA June meteor swarm could be loaded with surprises.
By Joel Achenbach
December 25
On June 30, 1908, an object the size of an apartment building came hurtling out of the sky and exploded in the atmosphere above Siberia. The Tunguska event, named for a river, flattened trees for 800 square miles. It occurred in one of the least-populated places in Asia, and no one was killed or injured. But the Tunguska airburst stands as the most powerful impact event in recorded human history, and it remains enigmatic, as scientists dont know the origin of the object or whether it was an asteroid or a comet.
One hypothesis: It was a Beta Taurid.
The Taurids are meteor showers that occur twice a year, in late June and late October or early November. The June meteors are the Betas. They strike during the day, when sunlight washes out the shooting stars that are visible during the nighttime meteor shower later in the year.
A new calculation by Mark Boslough, a physicist at Los Alamos National Laboratory, shows that the tree-fall pattern in Siberia is consistent with an asteroid coming from the same area in the sky as the Taurid meteor swarm. Boslough and physicist Peter Brown of Western University in London, Ontario, gave a presentation at the American Geophysical Union fall meeting in Washington this month in which they called for a special observation campaign this June to search for Tunguska-class or larger objects embedded in the Taurids.
In some years, Earth passes near the densest cluster of material in the Taurid stream and 2019 will be such a year. The scientists say it presents potentially the richest batch of incoming material since 1975, when seismometers left on the moon by Apollo astronauts recorded a spike in impacts during the Taurid swarm.
Full article at:
https://www.washingtonpost.com/science/2018/12/25/incoming-june-meteor-swarm-could-be-loaded-with-surprises/?utm_term=.855537008994
FirstLight
(13,364 posts)Could get interesting...
eppur_se_muova
(36,289 posts)I keep reading "Taurids" as "turds".
appal_jack
(3,813 posts)Seems like if Earth is moving through a meteor cloud, it could take longer than the ~18 hours of sunlight that the northern hemisphere experiences around then?
-app
VMA131Marine
(4,149 posts)At that time of the year Taurus is only "up" during daytime i.e. the Sun is in Taurus.
appal_jack
(3,813 posts)So, basically, it's not so much a "cloud" of debris Earth passes through around then, as it is a guy standing over by the sun and hurling rocks at Earth?
(metaphorically speaking)
-app
LakeSuperiorView
(1,533 posts)In June, that happens during the day. The fall Taurids occur at night, late October or early November.
The debris is orbiting the Sun, just like the Earth is. Next June, we pass through the part of the Taurid's orbit that has the densest cloud of debris.