Planetary Science

It takes approximately 24 hours for the Earth to complete one full rotation on its axis, which defines a day.

There exists a universal law of gravitation discovered by Newton which governs the force between any two masses.

The size of the force is in proportion to the product of the masses divided by the square of the distance between the centres of the masses.

Take an apple mass m at a distance R from the centre of the Earth mass M. The force (gravitational force aka weight) is proportional to (m x M)/R2. On the Moon mass N radius S, the force is proportional to (m x N)/S2. Because the Moon is much less massive than the Earth the ratio of these two forces is about 8 to 1 (check this fact) even though S is much smaller than R.

The acceleration of a body released under gravity is the force divided by the mass ( a= F/m) : this is F=ma restated and experimental law called Newtons second law

and this is a constant irrsspective of the mass of the body- the mass m cancels out because mM/R2 divided by m is proiportional to M/R2. For Earth and Moon the accelerations due to gravity are in proportion of M/R2 to N/S2 and this ratio is about 8 to 1 as I recall.

Jupiter is far larger than the other two. White dwarfs can be treated as Fermi gasses, and have the interesting property that as their mass increases their radius decreases. So the smallest is actually the 1.2 solar mass white dwarf.

The four ringed planets in our solar system are Saturn, Jupiter, Uranus, and Neptune. These planets have rings made up of particles ranging from tiny dust grains to boulder-sized chunks. Saturn's rings are the most prominent and well-known.

Yes, because there is less gravity on the moon.

Also, because there is no air friction on the Moon.

However, a frisbee thrown on the Moon will not travel as far as one properly thrown on Earth, because the shape of the frisbee generates lift which will keep it flying farther. With no air on the Moon, a frisbee cannot "fly".

Mercury's moon is named Ganymede. Venus and Mars do not have moons. Earth's moon is the Moon. Jupiter has four large moons called Io, Europa, Ganymede, and Callisto. Saturn has over 80 moons, with some of the largest being Titan, Rhea, and Iapetus. Uranus has 27 known moons, with the largest ones being Titania, Oberon, and Umbriel. Neptune has 14 known moons, the largest being Triton.

Solar Eclipse- When the moon passes between the sun and the earth the moon blocks our vision of the sun.

Lunar Eclipse- When the earth sits exactly between the sun and the moon, the earth blocks the sun's rays from hitting (and reflecting) off the moon.

Stars are constantly emitting solar radiation, or CMEs (coronal mass ejections). Earth is a target to solar radiation, but fortunately most radiation is either deflected Earth's magnetic field or ozone layer protecting us from it. Solar radiation is dangerous and lethal in outer space if exposed to it. Earth's magnetic field directs solar radiation to the poles and when it reacts with the atmosphere it lights up and creates the northern lights.

When a large object collides with Earth, debris is ejected into orbit and can initially form a debris field or a ring system around the planet. Over time, this debris can combine and accrete to form moons, such as how our own Moon is believed to have formed from debris generated by a collision with a Mars-sized object early in Earth's history.

Studying the spectrum of a star can provide information about its temperature, composition, and motion. By analyzing the absorption and emission lines in a star's spectrum, astronomers can determine its chemical composition, surface temperature, and whether it is moving closer or farther away from Earth. This information helps astronomers understand the physical properties of stars and their roles in the evolution of galaxies.

A star reaches "main sequence" when it starts converting hydrogen into helium. This occurs, when the temperature of the core reaches about 10 million kelvin. When this happens depends a lot on the rate of accretion of matter onto the star.

Larger stars would have to amass large quantities of hydrogen quicker than smaller mass stars to gain their size before becoming main sequence stars.

Difficult to answer, but a "best guess" would put the high mass star first.

Scientists predict that in about 6 billion years, the sun will exhaust its nuclear fuel and start expanding into a red giant. This is based on our current understanding of stellar evolution and the sun's mass and composition. As it runs out of fuel, the sun will eventually shed its outer layers, forming a planetary nebula, leaving behind a white dwarf remnant.

The Worims left their planet due to a catastrophic event that made it uninhabitable, such as natural disasters, resource depletion, or environmental degradation. They were forced to seek a new home in order to survive and ensure the continuation of their species.

they spew out lots of smoke and ash. this gets shot up into the atmosphere, where it blocks large quantities of sunlight. If the eruption is big enough, the ash can block out enough sunlight to cause an ice age. < note: this is only true for pyroclastic eruptions, not regular lava ones>.

A low or medium mass star will eventually evolve into a red giant as it depletes its core hydrogen fuel. Towards the end of its life, it will shed its outer layers and form a planetary nebula, leaving behind a dense core called a white dwarf.

Earth !!

it goes:

Mercury

Venus

Earth

Mars

Jupiter

Saturn

Uranus

Neptune

Pluto

Oh, dude, someone who travels around the world is called a "globetrotter" or a "world traveler." They're basically the real-life version of Carmen Sandiego, just without the cool hat and the mystery. So, like, if you ever meet one, maybe ask them for travel tips instead of trying to solve a crime with them.

To rotate a picture in PowerPoint, simply select the picture, go to the "Format" tab on the toolbar, and then click on the "Rotate" option. You can choose to rotate the picture to the left or right in 90-degree increments or manually adjust the rotation angle.

Jupiter is the planet in our solar system with greater mass than the combined mass of all the other planets and their moons.

The sun and a planet are both celestial bodies that orbit around a central point in space. They both emit light and heat, with the sun being a star that generates its own light and energy, while a planet reflects light from a star like the sun. Additionally, both the sun and planets are part of a solar system.

The primary gases in the paleoatmosphere were carbon dioxide, nitrogen, and water vapor. There were also smaller amounts of methane and ammonia. These gases contributed to the greenhouse effect and the overall composition of Earth's atmosphere during that time.

Venus is the hottest planet in our solar system with an average surface temperature of about 900 degrees Fahrenheit (475 degrees Celsius) due to its thick atmosphere of carbon dioxide and sulfuric acid clouds that trap heat.

Forces such as gravity and radiation play a key role in shaping the planets within our solar system. Gravity, generated by the mass of each planet, keeps them in motion around the Sun and affects their orbits. Radiation from the Sun can impact a planet's atmosphere, climate, and surface features. These forces contribute to the overall stability and dynamics of the solar system.

Your weight on Mars would be about 38% of your weight on Earth. This is because Mars has a weaker gravitational pull than Earth.

When you are having a clear sky with stars to be seen, fat chance you can spot a Sattelite between them.

not all sattelites "pass overhead" tough, many are fixed around 1 point in relation to the earth.

They are in most cases to be reconised by a slight but relatively quick flickering.

They are often less bright in the centre.