General astronomy

General astronomy

Contributors in General astronomy

General astronomy

the collapsed core for the most massive stars. Formed from the total collapse of a core greater than 3 solar masses to an infinitesimal point of infinite density. Gravity in the region surrounding ...

blueshift

Astronomy; General astronomy

the shift of spectral lines from an object to shorter wavelengths because the object is moving toward the observer. The greater the speed of the object, the greater the blueshift will be.

brown dwarf

Astronomy; General astronomy

object formed from the gravitational collapse of a gas cloud just as a star is but having too little mass (less than 0.08 solar masses) to undergo nuclear fusion reactions.

carbonaceous meteorite

Astronomy; General astronomy

type of stone meteorite containing silicates, carbon compounds (giving them their dark color), around 20% water, and sometimes amino acids (the building blocks of proteins used in biological ...

celestial equator

Astronomy; General astronomy

great circle that is a projection of the Earth's equator onto the sky. Always intercepts horizon at exact East and exact West point. Its meridian altitude = (90 degrees - observer's latitude). We see ...

celestial sphere

Astronomy; General astronomy

imaginary sphere of extremely large size around the Earth on which the stars appear to be placed.

center of mass

Astronomy; General astronomy

the balance point between two massive objects that is proportionally closer to the more massive object. It is the point where (mass object 1) × (object 1 distance from center of mass) = (mass object ...