And every 200 million years, the two may well get together to form Earth's continents.
, Dr. Phil Sutton, senior lecturer in astrophysics at the Univesity of Lincoln and lead author of the study, explains that with these two pieces of information – age and composition – the team could then reconstruct a timeline of crust formation.Next was the study's distinguishing element; the scientists applied a mathematical analysis called the.
The spiral arms orbit at about 210 kilometers per second, while the Sun is speeding along at 240km per second, meaning our Solar System is surfing into and out of the galaxy’s arms. It is believed that each of these transits takes around 200 million years.So, the timing of crust production on Earth and the length of time it takes for our solar system to orbit the galactic spiral arms are both around 200 million years– but how is this connected?The Oort Cloud is distant source of space debris.
This is because Hafnium isotopes suggest an influx of juvenile magma — magma that has never reached the surface before. Such an influx makes sense in a scenario where a blast from a high-energy meteorite has caused a perturbation in Earth's surface, leading to decompression melting of the mantle.
For instance, if the exoplanets are in a different part of the galaxy, they might alter the orbits of the planets more or less. This might be useful for looking at the very long-term habitability of the planet.
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