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Planetary Science

Planetary Science is the study of Planets and the Solar System, a combination of Astronomy and Earth Sciences. Find questions about the different planets and more.

25,144 Questions

How far is earth from the edge of the solar system?

The edge of the solar system is broadly considered to be the heliopause, the boundary where the Sun's solar wind is stopped by the interstellar medium. This region is estimated to be around 11 to 15 billion kilometers from Earth, roughly where the influence of the Sun's gravity ends and interstellar space begins.

Where is the hottest planet in space?

The hottest planet in our solar system is Venus, due to its thick atmosphere that traps heat. It has a surface temperature that can reach up to 900 degrees Fahrenheit (475 degrees Celsius).

What are the outer planets starting from the Sun showing a diagram?

from the sun the inner planets are: mercury, venus, Earth, Mars, the outer planets from the closest to the farthest are: Jupitar, Saturn, Uranus, Neptune, Pluto is no longer a planet

all the planets in order from closest to farthest are mercury, venus, Earth, Mars, Jupitar, Saturn, Uranus, Neptune Pluto is no longer a planet

How much hydrogen does the sun use in one day?

Depending on the source, the figure varies. [See related question]

Taking the value from NASA of 600 million tons per second, would give a daily total of 600 x 86,400 = 51,840,000 million tons which is:

51.8 trillion tons per day.

What does an planet completes one of these everyday?

A planet completes one rotation on its axis every day, causing day and night cycles.

Why the outer planets mostly made from gas?

The outer planets are made mostly of gas because they formed further away from the Sun where temperatures were colder, allowing volatile substances like hydrogen and helium to remain in gaseous form. Additionally, the outer planets accumulated a larger amount of gas and dust during their formation, leading to their composition predominantly consisting of gases.

What the gaseous area surrounding a planet?

The gaseous area surrounding a planet is called its atmosphere. It consists of several layers of gases held in place by the planet's gravity and plays a crucial role in regulating temperature, protecting against harmful radiation, and sustaining life through processes like photosynthesis.

Why are the inner planets different to the outer planets?

The inner planets are all considered rocky planets in that under atmospheric layers, they have a rocky surface. The outer planets are made of gas and liquid, and are called gas giants. They have no solid surface. Also, all the outer planets have rings while the inner planets do not.

What will happen if the earth starts to rotate and revolve in the opposite directions?

If the Earth were to start rotating and revolving in the opposite direction, it would have significant and catastrophic consequences. The change in rotation would impact the planet's climate, ocean currents, and atmospheric circulation, leading to extreme weather patterns and disruptions to ecosystems. Additionally, the reversal in rotation could alter the length of days and nights, potentially causing widespread confusion among plants, animals, and human societies.

What happened to sun microsystems?

Sun Microsystems was acquired by Oracle Corporation in 2010 for approximately $7.4 billion. After the acquisition, Oracle integrated Sun's technologies into its product portfolio, including Java, Solaris, and SPARC processors. However, many of Sun's hardware products were gradually phased out or rebranded under the Oracle name.

Are there months on other planets?

The other planets have no calendars so the answer is no, they only have days and years.

A fun exercise on a rainy afternoon would be to devise a calendar for Mars or another planet, that fits the observed lengths of day and year on that planet.

However, the Martian year is about 668.625 Martian days, so on Mars they would need 5 leap years in every 8, which inconvenient . . .

Is Saturn a rocky planet or gas planet?

Saturn is a gas giant composed mainly of hydrogen and helium. It does not have a solid surface like rocky planets such as Earth or Mars.

How does the temperature change when a planet gets further away from the sun?

Their velocity. For example, Earth goes around the Sun with about 30 km. / second. If Earth would suddenly stand still (no reason why this should happen; this is hypothetical), it would fall directly towards the Sun. As it is, Earth moves at 30 km./sec., approximately at right angles with the Sun. The Sun's gravity changes this direction - but it is not strong enough to pull Earth completely towards the Sun.

Their velocity. For example, Earth goes around the Sun with about 30 km. / second. If Earth would suddenly stand still (no reason why this should happen; this is hypothetical), it would fall directly towards the Sun. As it is, Earth moves at 30 km./sec., approximately at right angles with the Sun. The Sun's gravity changes this direction - but it is not strong enough to pull Earth completely towards the Sun.

Their velocity. For example, Earth goes around the Sun with about 30 km. / second. If Earth would suddenly stand still (no reason why this should happen; this is hypothetical), it would fall directly towards the Sun. As it is, Earth moves at 30 km./sec., approximately at right angles with the Sun. The Sun's gravity changes this direction - but it is not strong enough to pull Earth completely towards the Sun.

Their velocity. For example, Earth goes around the Sun with about 30 km. / second. If Earth would suddenly stand still (no reason why this should happen; this is hypothetical), it would fall directly towards the Sun. As it is, Earth moves at 30 km./sec., approximately at right angles with the Sun. The Sun's gravity changes this direction - but it is not strong enough to pull Earth completely towards the Sun.

If a star located 65 light years away from Earth stops giving off light energy at this very moment and how long will it be before you can know it and explain?

It would take 65 years for us on Earth to notice that the star has stopped giving off light energy, since light travels at the speed of light. This means that the light emitted by the star today will take 65 years to reach us, so we would only be able to detect the absence of its light after that time has passed.

Is the eight planet from the sun and has a blue color?

The eighth planet from the sun is Neptune. It is a gas giant with a blue color due to the presence of methane in its atmosphere, which absorbs red light and reflects blue light.

Why do you not feel the speed of the Earth revolving around the Sun?

You don't feel the speed of the Earth revolving around the Sun because you are moving along with it at the same speed. This constant motion doesn't cause any noticeable acceleration or deceleration that would be detected by our senses. Additionally, the Earth's rotation gives us a sense of a consistent reference frame, making the speed of its revolution feel constant.

What is the difference between a shooting star and a falling star?

Asteroids are large pieces of rock, many big enough to be considered to be small planets. Shooting star is an incorrect name for a meteor. They have nothing to do with stars. They are small pieces of rock or dust that burn up in our atmosphere as they go through it. We seem them as something streaking across the sky in seconds.

Why did they change Movie Star Planet?

Companies often make changes to their products to keep up with evolving trends, technology, and user preferences. In the case of Movie Star Planet, changes may have been made to enhance the user experience, introduce new features, improve security, or address feedback from the community. Ultimately, these updates aim to attract and retain users, ensuring the platform remains relevant and engaging.

Why is one full spin on earth a day?

it takes 24 hours for the earth to spin all the way around.

5 reasons why life exists on earth?

Life exists on Earth due to its unique positioning in the habitable zone around the sun, allowing for liquid water to exist. Earth's atmosphere contains the right balance of gases to support life by providing oxygen for respiration. The presence of a diverse range of elements and nutrients on Earth enables the formation and maintenance of living organisms. The Earth's magnetic field helps protect life from harmful solar radiation. Finally, the presence of plate tectonics and a stable climate have allowed life to evolve and thrive on Earth.

What is the proper order of the planets starting from smallest to largest?

Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,Neptune, Pluto comes last but it is not really classified as a planet today. It is now known as a dwarf planet.

To remember this order there is a saying that helps:

My Very Elderly Mother Just Sat Up Near Pluto

Hope this helps

Which is the 6th planet closest to the sun?

Saturn is the sixth planet from the Sun in our solar system.

What is more dangerous an asteroid or a meteor?

Which one? The Earth has been pummeled by asteroids and comets in the last 5 billion years.

Some are obvious; Meteor Crater in Arizona, for example. There it is, right there. There's even a gift shop and signs. There are hundreds of others. Download Google Earth, and look for circles; circular lakes, circular mountains, circular bays.

But because the Earth's crust is 75% covered with water, many of the craters aren't visible. And because the Earth's crust is active, rain and earthquakes eventually destroy the crater walls.

Possibly the asteroid you are thinking of is the one that killed off the dinosaurs 65 million years ago. That happened near the town of Chicxulub at the tip of the Yucatan peninsula in Mexico.