If you track the motion of individual stars in the ultra-dense star cluster at the very center of the Milky Way you’ll see that they swing in sharp orbits around some vast but invisible mass—that’s the Sagittarius A* supermassive black...

The Sun: an entity worshipped as a god throughout time and across cultures. The source of all life and sustenance for our little blue space rock, and also a force of unthinkable destructive power. But soon humanity will reach out its...

Mercury is the closest planet to the sun. It has no atmosphere and is, as such, covered in craters. It's also incredibly hot but, surprisingly, has water ice hiding beneath its surface.

The record for the fastest thing ever created by humans is a tie between the Helios 2 probe and a manhole cover.

What happens when a satellite slows down in orbit? Learn how a small Δv transforms a circular path into an elliptical orbit, with step-by-step analysis of orbital energy, period, and arrival timing.

Rocket Science and orbital mechanics of Satellites.

There are about 3000 operational satellites, owned by over 100 different countries orbiting the earth right now. About 550 of these are in geo...

Explore how a satellite’s kinetic and potential energy change as it orbits Earth—yet its total mechanical energy stays constant. Learn why speed depends solely on orbital radius, why mass doesn’t matter, and how all this ties into...

An orbit in space which follows an oval-shaped path. Any small object orbiting a larger one in space will follow an elliptical orbit.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

A small icy body in the Solar System, with a solid nucleus of rock, dust, ice, and frozen gases such as carbon dioxide, carbon monoxide, and ammonia.
<

br/>

A Twig Science
Glossary Film.
Key scientific terms defined in...

This video provides a detailed overview of the structure and location of our solar system, including the orbits of different celestial bodies and the gravitational forces that keep them in place. It also explores the location of our...

How long is a typical day on Mercury? How does an elliptical orbit affect the sunrise on Mercury? What are other unique features of Mercury?<br/>
Mercury, The Solar System Historian, Part 3

Kepler’s third law is derived and demonstrated. This is an AP Physics C: Mechanics topic. <br<br/>/>

Content Tim<br/>es:
0:00 Kepler’s Third <br/>Law
0:34 Kepler’s Third Law Derivation
3:38 Satellite mass is irrelevant

When a satellite is moving along an elliptical orbit, are linear momentum and angular momentum of the satellite conserved?

Kepler’s second law is described and demonstrated. This is an AP Physics C: Mechanics topic. <br<br/>/>

Content Time<br/>s:
0:00 Kepler’s Second Law
1:27 Mild issues with the animation

A brief history of geocentric and heliocentric solar system models are discussed. Kepler's first law is defined. How to draw an ellipse is demonstrated. Planet eccentricities are discussed. This is an AP Physics C: Mechanics...

When a point particle is moving along a circle, should we use the translational or rotational kinetic energy equation? Should we use the point particle or rigid object with shape equation for angular momentum? The equations are also...