: "Although this lake is outside the territory that was affected in 1908, it is of great interest.
"It is deep, and silty sediments, that have accumulated here, do not mix, or subside."
This was useful for the scientists because it meant the sediments are separated into time periods and can reveal previous changes to climate or information regarding catastrophic events.
He added: "Spring-autumn waste waters and the Lakura River brought traces of the Tunguska catastrophe to this lake, because the event was accompanied by massive wildfires and emissions of both planet and space origin."
The scientists aimed to spot particles of extraterrestrial origin in the old sediment layers so they could confirm a meteorite impact.
Experts still debate over whether Lake Cheko covers an impact crater left behind by the Tunguska Event Credit: V.Romejko/The Siberian Times Meidus said: "We discovered a distinguishing light-coloured layer in sediments of Lake Zapovednoye the content of which - an increased content of potassium, titanium, rubidium, yttrium, and zirconium - allows to tie it to the consequences of the Tunguska bolide explosion.
"This way we know which layer of sediments might contain particles of extraterrestrial origin.
"We established the indicators, that is search criteria, during work with samples of the Chelyabinsk and Sikhote-Alin meteorites.
"The next stage implies search for micro-particles with unusual composition with the use of synchrotron radiation.
"Now we know where to look for them. If there is extraterrestrial substance, it will be in the 1908-1910 layer."
What is a meteor shower? Here's what you need to know...
During a meteor shower, fireballs appear to streak across the sky This happens because pieces of debris are rapidly burning up as they eneter Earth's atmosphere That debris is often left behind by a collision between two space objects, like a planet or comet The Orionids shower is debris from Halley's Comet, a huge chunk of ice orbiting the Sun Many meteor showers are repeated They occur at a height of around 62 miles
Stunning footage captures the moment a fireball falls to earth above the skies of Wilcot, Wiltshire In other space news, scientists think they've found the first known ‘alien’ protein ‘unlike anything on Earth’ inside a meteorite.
A mysterious glowing object in Earth's orbit has left scientists baffled.
And, the biggest explosion since the Big Bang has been detected by astronomers .
Do you believe there is alien life out there? Let us know in the comments...
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