This week we talk about how sciences can weight a planet, discuss gravity, and the explosion of a military weather satellite while in orbit.
Weather Satellite Explodes
Ways to Measure Planetary Mass

Geometric (size and density), this doesn’t always work well
By triangulation and measurement of orbits of natural or artificial satellites.

Gravity

All stems from Newton’s Law of Gravitation. Which is really a controversy between Newton and Hooke.
Gravitational constant based on the Cavendish torsion balance experiment.
Measurement of the constant is difficult since it is small and we cannot measure outside of a gravitational field.
With this and Kepler’s Laws, we can solve most simple problems by hand!

Planetary Ranging
A variety of ranging techniques can be used, including:

Radio reflection
Laser reflection
Triangulation

Fun Paper Friday
THE ASTEROID REDIRECT MISSION AND SUSTAINABLE HUMAN EXPLORATION, Gates et al.
This week we talk about capturing an asteroid with a bag and a pull string, or a spider like lander. The asteroid is then explored and moved into a lunar-like orbit for further study. The best part of all is that the ship will have an international docking system so anyone can go do science. A step towards open source science!
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - [email protected]
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Ver todos los episodios