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Distance travelled ~ 567'624'000 km

"NASA-funded researchers have discovered that some building blocks of DNA (the molecule that carries the genetic instructions for life), found in meteorites were likely created in space. The research gives support to the theory that a "kit" of ready-made parts created in space and delivered to Earth by meteorite and comet impacts assisted the origin of life."

This is absolutely fascinating, particularly for us, as the 23 Degrees team are currently researching possible stories about meteors and asteroids for the series. They tell us so much about our planet.

At this stage it seems unlikely that we will explore the link between meteorites and the origins of life - but the impact of asteroids on our planet's climate is of huge significance. The KT impact being one of the major examples of this.

The KT boundary marks the time between the Cretaceous and Tertiary periods, and the KT impact is one of the leading theories behind the extinction of the dinosaurs.

It's been discovered that this was when a massive asteroid hit the Earth near Mexico. It is argued this caused flash fires, a nuclear winter and global warming. All of which contributed to mass extinctions (75% of species, supposedly 99.999% of individual animals on Earth). In turn however it may have allowed mammals to evolve.

It would be great to hear your thoughts on Earth's relationship with meteors, asteroids and comets and what it tells us about our planet.

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