Retrograde motion is a situation in which an object is moving in the opposite direction of another moving object. This is commonly...
What Is “Mercury Retrograde”? Three to four times a year, the planet Mercury appears to travel backward across the sky. We refer to these periods as times when Mercury is in apparent retrograde motion or simply ”Mercury retrograde.” To those who practice astrology, these times were traditi...
A cannonball is fired with a velocity of 10 m/s upward, and 30 m/s north. In what direction is the cannonball fired? Do all planets undergo retrograde motion as seen from Earth? Two equal masses travelling at velocities of 4 m/s and -2 m/s collide by direct impact an...
Do all planets undergo retrograde motion as seen from Earth? What is the long-term carbon cycle? A planet closer to the sun will have a longer or shorter year than a planet further from the sun? If the Sun were to contract and become a black hole, (a) what would its approximate radi...
Then the lifting problem is not always solvable. For instance, we have a continuous projection from to , but the identity map cannot be lifted continuously up to , because is contractable and is not. However, if is a discrete space (every set is open), then the axiom of choice lets ...
reason is due to our orthodox implementation of analysis via “epsilon-delta” type concepts, such as the notion of “sufficiently large” used above, which notoriously introduces a large number of both universal and existential quantifiers into the subject (for every epsilon, there exists a delta...
When is Venus Retrograde? Venus Retrograde occurs once every 12-18 months, and each retrograde lasts around six weeks. This means that, of all the planets in our solar system, Venus spends the smallest amount of time in retrograde motion. ...
The more shocking, the more impossible, the discovery, the more likely it is to someday be seen as the harbinger of a “scientific revolution” — a whole new world created over decades by scientists who adopt the new paradigm. That’s one side of the scientific coin. The other side, ...
During any retrograde, we are called to an awareness around our need to be more individualized in whatever aspects of life that planet rules. Mercury, specifically, corresponds to deductive, linear, and rational thought. Its retrograde period is a time to reorient the way we mentally organize re...
Retrograde motion or flow signifies a backward, reverse, or contrary direction to the usual. In astronomy, this term is used to describe the apparent backward movement of planets as observed from Earth, a phenomenon that occurs due to the relative positions and movements of Earth and the other...