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The Solar System
Ever wondered if there is life on Mars? Or if Jupiter has five moons? Look no further; here is the category concerning all questions about our solar system and the known planets!
4,302 Questions
How many planet is in our solar system?
There are a total of 13 known planets in our solar system:
There are 8 major planets in our solar system. Since the recent re-definition of 'planet', Pluto is a dwarf planet (along with 4 others in that classification).
The 8 major planets in the solar system:
1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune
The 5 dwarf planets:
1. Ceres (a large asteroid)
2. Pluto
3. Haumea (Kuiper Belt Object)
4. Makemake (Kuiper Belt Object)
5. Eris (Kuiper Belt Object)
Pluto was designated a dwarf planet when it became obvious that there were several other objects of its size within the outer regions of the solar system. Three of them are now also dwarf planets: Eris, Haumea, and Makemake, and others (Quaoar, Sedna) are candidates to be named dwarf planets.
There were 9 planets following the discovery of Pluto in 1930. But with the improvements in telescopes in the 21st century, a surprising number of sizable planetoids found past Neptune, and astronomers realized that there could be dozens of objects being called planets. So in 2006, Pluto was reclassified as a "dwarf planet" by the International Astronomical Union. The asteroid Ceres and 3 other trans-Neptunian objects (Haumea, Makemake and Eris) were also classified as dwarf planets and there are several other pending candidates.
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There were nine planets in our solar system, but in 2005, the International Astronomical Union finally devised some criteria for determining what astronomical bodies can be called a "planet". (There had never been an official definition for "planet".
The planet Pluto was demoted from "planet" to "dwarf planet", because Pluto had not "cleared its orbit" of other objects, which left only eight official planets. Pluto became a "dwarf planet", as did the asteroid Ceres, and three trans-Plutonian objects Makemake, Haumea, and Eris.
There were eight... Mercury, Venus, Earth,Mars, Jupiter Saturn, Neptune, Uranus & Pluto. However - recently, Pluto has been 'downgraded' to a 'minor planet' - since it's distance from the sun places it closer to the Kuiper belt.
How many other planets in the universe have you found?
To qualify as a solar system, there would need to be at least one planet orbiting a star. Current estimates in our own Milky Way galaxy average about one planet per star, which would mean about 300 billion solar systems. Recent data hint that about 40 billion of those may have an Earth-like planet orbiting in the habitable zone.
There are also a smaller number of rogue planets not in solar systems, and the first exoplanet discovered in another galaxy has been identified.
What is the most dense planet in the solar system?
The Earth is the most dense planet in our solar system out of all eight planets.
What planet is located at the center of the solar system?
there is none it is the sun witch is a star
Why is the sun's gravitational pull greater than the Moon's gravitational pull on the earth?
According to Newton's universal gravitational law, the force of attraction between two massive bodies is inversely proportional to the square of the distance between them.
As earth is closer to the sun than the Pluto, the force of gravitation is more in case of earth than the Pluto
What is the name of the galaxy that contain our solar system?
Our Solar System is part of the Milky Way Galaxy
Do you put a capital letter on the word 'solar system'?
When used to describe our sun it is a name, which makes it a proper noun and therefore should be capitalized. When used in reference to the many bright lights we see at night it is simply a noun and therefore not capitalized.
What is the youngest planet in our solar system?
There is not believed to be a youngest or an oldest planet. They most likely formed simultaneously.
Why the temperature on neptune is cold?
The average distance from the Sun to Neptune is about 30 AU. That's 30 times the distance from Sun to Earth. This means that the amount of solar energy Neptune gets, per square meter, is 1/900 (1 divided by 30 squared) that of Earth.
What is the distance between asteroid Belt and the sun?
This is known as the Asteroid belt. Its mainly smaller bodies, but there are a few big asteroids in there also. The biggest object there is known as Ceres. Its about 1000km in diameter, and now classed as a dwarf planet.
What is an example of a scientist using a physical model to describe the solar system?
Astronomers mean a replication of the Sun. This means make a smaller model or a life size mode of the Sun.
What is a geocentric model who came up with it?
A geocentric model places the Earth as the center axis of the universe. It originated with Anaximander.
- Saturn is the planet with the most notable planetary rings
- The planetary ring is a ring of cosmic dust and other small particles orbiting around a planet in a flat disc-shaped region.
- There are other three gas giants of the Solar System (Jupiter, Uranus and Neptune) also possess ring systems of their own.
Is Jupiter the biggest or smallest planet in the solar system?
yes, Jupiter is the Solar System's largest planet. Weighing millions of pounds but only of gas. There is a big storm on Jupiter now that has lasted for thousands of years.
It has almost 2.5 times the mass of the other eight plants combined and over 1,300 Earths could fit inside it.
How do scientists collect data about our solar system and the universe?
Through telescopes. We have more ground based telescopes than we have instruments in space, though we have also learned a great deal through some space missions, such as through the COBE & WMAP satellites.
Optical telescopes provide a wealth of information, but we can see further using radiotelescopes, and we can penetrate deeper through clouds of interstellar gas with infrared telescopes.
What are Advantages of Solar eclipses?
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What is gravity role in our solar system?
If we didn't have gravity we would float in the air all planets will float away and it will not revolve and rotate properly because of gravity in the solar system the planets did not float away and the planets will float away farther and farther until it reaches other galaxies.
Where is venus located in relationship to the sun?
It orbits the Sun at a distance of about 108,208,000 Km.
When was the birth of the solar system?
The formation of our solar system began around 4.568 billion years ago with the collapse of a large molecular cloud, mainly hydrogen, which gradually came together under its own gravity to give birth to our solar system.
What happens when the moon is waxing?
when the moon is said to be "waxing" it basically means that it's getting bigger. the sun reflects off of more of its surface that is visable to the earth. from the new moon, it slowly becomes a waxing crescent, then waxing gibbous, to eventually a full moon. then begins "waning" or getting smaller until it's back to the new moon again.
What are the distance the solar system is measured by?
Interplanetary distances are measured in either kilometers or in miles. For the distant planets, some measures are measured in Astronomical Units, where one AU is the distance between the Sun and the Earth.
So, 1 AU = 93,000,000 miles.
