Uploaded January 2023 | Updated September 2026, 1 week ago
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NOTES:
The Sun is a star like other stars exist in the universe.
The Sun is about (150 million kilometers) from Earth, and without its energy, life as we know it could not exist here on our home planet Earth.
• The Earth is one of eight planets that travel around the Sun.
• The eight planets in order of distance are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Mercury is closest to the Sun.
Neptune is the farthest..
The solar system is also home to lots of asteroids, moons, and dwarf planets such as Pluto.
Moon is a natural satellite revolving around our earth
The objects called dwarf planets are similar to the solar system's eight planets but are smaller.
Small rocky celestial bodies found especially between the orbits of Mars and Jupiter
Asteroids belt
The region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found
Lets talk about the orbits around the sun
The orbit actually it's more like an oval.
The shape of the Earth's orbit, elliptical.
This means it is shaped like an ellipse.
An ellipse is a circle which has been squashed or flattened a bit.
All 8 planets in our Solar System travel around the Sun in elliptical orbits.
Not all ellipses are the same.
Sun is not at the centre of the elliptical orbit, except when the orbit is approximately circular
There are some common themes from the data of the planets is:
Orbital duration (how long it takes to travel around the Sun) increases with orbital distance (distance from the Sun)
The circular path that the planet's travel in has a larger radius
Orbital duration increases with orbital distance
o E.g. Neptune travels much slower than Mercury
o The planets further away from the Sun experience a weaker gravitational pull, so move slower in their orbit
• Surface temperature decreases with orbital distance except for Venus
o Venus has a dense atmosphere of carbon dioxide, trapping in heat through the greenhouse effect
• The surface gravitational field strength doesn't just depend on a planet's size, but also its mass
•
o This is why although Uranus is 4 times larger than Earth, it has a smaller gravitational field strength because it is less dense
Please don't hesitate to send an email for comments, advices, recommendation, even for support and classes. My email address is here
thephysicspartner@gmail.com
NOTES:
The Sun is a star like other stars exist in the universe.
The Sun is about (150 million kilometers) from Earth, and without its energy, life as we know it could not exist here on our home planet Earth.
• The Earth is one of eight planets that travel around the Sun.
• The eight planets in order of distance are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Mercury is closest to the Sun.
Neptune is the farthest..
The solar system is also home to lots of asteroids, moons, and dwarf planets such as Pluto.
Moon is a natural satellite revolving around our earth
The objects called dwarf planets are similar to the solar system's eight planets but are smaller.
Small rocky celestial bodies found especially between the orbits of Mars and Jupiter
Asteroids belt
The region of interplanetary space between the orbits of Mars and Jupiter in which most asteroids are found
Lets talk about the orbits around the sun
The orbit actually it's more like an oval.
The shape of the Earth's orbit, elliptical.
This means it is shaped like an ellipse.
An ellipse is a circle which has been squashed or flattened a bit.
All 8 planets in our Solar System travel around the Sun in elliptical orbits.
Not all ellipses are the same.
Sun is not at the centre of the elliptical orbit, except when the orbit is approximately circular
There are some common themes from the data of the planets is:
Orbital duration (how long it takes to travel around the Sun) increases with orbital distance (distance from the Sun)
The circular path that the planet's travel in has a larger radius
Orbital duration increases with orbital distance
o E.g. Neptune travels much slower than Mercury
o The planets further away from the Sun experience a weaker gravitational pull, so move slower in their orbit
• Surface temperature decreases with orbital distance except for Venus
o Venus has a dense atmosphere of carbon dioxide, trapping in heat through the greenhouse effect
• The surface gravitational field strength doesn't just depend on a planet's size, but also its mass
•
o This is why although Uranus is 4 times larger than Earth, it has a smaller gravitational field strength because it is less dense
