direction articles

What fundamental physical principle explains the near-uniform prograde motion in the Solar System?

What fundamental physical principle explains the near-uniform prograde motion in the Solar System?

From what specific viewpoint is the orbital motion of planets defined as counter-clockwise?

From what specific viewpoint is the orbital motion of planets defined as counter-clockwise?

What historical convention established the direction defined as 'clockwise' for human measurement?

What historical convention established the direction defined as 'clockwise' for human measurement?

In mathematics, which direction is conventionally designated as the 'mathematically positive direction' for rotation?

In mathematics, which direction is conventionally designated as the 'mathematically positive direction' for rotation?

What term describes the rotational bias shared by about 95% of objects in our local stellar neighborhood?

What term describes the rotational bias shared by about 95% of objects in our local stellar neighborhood?

Which celestial body is the most famous exception noted for rotating on its axis in a retrograde (clockwise) direction?

Which celestial body is the most famous exception noted for rotating on its axis in a retrograde (clockwise) direction?

What state did the gas and dust cloud possess just before it collapsed to form the Sun and planets?

What state did the gas and dust cloud possess just before it collapsed to form the Sun and planets?

What is the reason why mechanical clockmakers established the clockwise direction in their designs?

What is the reason why mechanical clockmakers established the clockwise direction in their designs?

What do exceptions like retrograde spinners suggest about the initial conditions of the Solar System?

What do exceptions like retrograde spinners suggest about the initial conditions of the Solar System?

What is the contrast observed between cosmic motion and human construction regarding directional constraints?

What is the contrast observed between cosmic motion and human construction regarding directional constraints?

What concept describes the universe looking the same in every direction?

What concept describes the universe looking the same in every direction?

What two properties together form the Cosmological Principle?

What two properties together form the Cosmological Principle?

What observation provides the most powerful evidence supporting the universe's uniformity?

What observation provides the most powerful evidence supporting the universe's uniformity?

Approximately how small is the temperature difference found in the CMB across different directions?

Approximately how small is the temperature difference found in the CMB across different directions?

On which scale is the universe clearly *not* homogeneous according to the text?

On which scale is the universe clearly *not* homogeneous according to the text?

What apparent paradox arises from distant regions matching CMB temperatures without having been in causal contact?

What apparent paradox arises from distant regions matching CMB temperatures without having been in causal contact?

What expected directional variation in the CMB must cosmologists subtract due to our local motion?

What expected directional variation in the CMB must cosmologists subtract due to our local motion?

If a significant anisotropy in expansion were confirmed, what leading theory proposed to explain current uniformity might need revisiting?

If a significant anisotropy in expansion were confirmed, what leading theory proposed to explain current uniformity might need revisiting?

Approximately what scale size marks the threshold where the variance of matter density sharply drops, confirming homogeneity?

Approximately what scale size marks the threshold where the variance of matter density sharply drops, confirming homogeneity?

What observational finding directly challenges the assumption of strict isotropy in the universe's evolution?

What observational finding directly challenges the assumption of strict isotropy in the universe's evolution?