The sun is approximately 25,000 light years away from the centre of the milky way and moves around it, in an approximately circular path, in roughly 170 million years. let m be the mass of the galactic matter within a radius of 25,000 light years from the galactic centre. given that sunlight take approximately 8 min to reach the earth, what is the ratio of m to the mass of the sun? (a) 1.5x10 (b) 5x10 (d) 5x1012 (c) 1.5x1012

the force on the thing and the distance the force moves the thing

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.