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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
Where can I find Printable worksheets on the solar system?
There are many websites that offer worksheets to help you learn about the solar system. For example, homeschooling.com provides solar system word searches to help you learn the names of the planets.
When matter and anti matter collide does it make dark matter?
My answer will not be very helpfull. But we have no idea what so ever about what will happen in this scenario. We have still a long way to go in even figuring out what dark matter is. Dark matter is to us only the knowledge that there has to be something more out there somewhere.
~Stenpung~
since dark matter has mass and is infact matter it would react just like normal matter would, and it would have the same explosive results as matter and antimatter ...
it is also possible that they are infact the same thing in which case nothing would happen...
~c1c2c3c4c~
What was the the planet that is no longer a planet in your solar system?
Pluto, it is now a dwarf planet or planetoid.
What planet in your solar system has the longest day?
Venus, its day is equivalent to 243 Earth Days. That's the rotation period, or "sidereal day". However the "solar day" on Venus is only about 117 Earth days. If you mean the "solar day" then Mercury has the longest day because
Mercury has a solar day of about 176 Earth days.
What is the thickness of the atmosphere of each planet in the solar system?
The thickness of each planet can be measured by looking at the surface pressure - this is essentially related to the number of gas molecules for a given volume. A low pressure indicates a thin atmosphere, while a thicker atmosphere will have a higher surface pressure. You cant really give this for the four outer gas planets as they are made out of gas and have no real surface like the inner terrestrial planets. The atmospheres (and pressures) of the gas giants just get thicker the deeper you go into the planet.
For Mercury, the surface pressure is near zero, there is no real atmosphere due to its small size and closeness to the sun. For Venus the atmosphere is thick, the pressure is some 93 bar (9.3 Mega-pascals - MPa or 9300 kilo-pascals - kPa) at the surface, where for earth it is about 1 bar (0.1 MPa or 100 kPa), so Venus' carbon dioxide atmosphere is 93 times that of earths. Mars has a thin carbon dioxide atmosphere of 0.064 bar or 6.4 kPa.
1 bar = 100 kPa = 0.1 MPa
What term refers to our sun and the objects that orbit around it?
The term used for the sun and the objects that move around it is solar stem. This is what contains the other planets.
Why do scientists use AUs to measure distances in the solar system?
The AU was used as a unit of measure, before the propagation of electromagnetic radiation was understood, or its rate quantified. So because of tradition, and the fact that the AU is a more wieldy unit, for distances within the solar system than either light years, or miles, the AU still holds sway.
What kind of a solar system did Copernicus believe?
All of the planets plus the sun revolve around the Earth
Why were copernicus and the heliocentric theory so revolutionary?
The ruling thought of how the solar system was put together had for several hundred years had the Earth in the middle. Then came the heliocentric theory and put the Sun - not the Earth - in the middle. This annoyed the Church, which thought that humans - the finest of God's Creations - should be in the middle.
What are the four inner or terrestrial planets?
The 4 "inner planets" are Mercury, Venus, Earth, and Mars.
The solar system consists of two types of planets: terrestrial and jovian (or "gas giants"). The inner four planets, which are all terrestrial, are: Mercury, Venus, Earth, and Mars (from closest to furthest).
How close does perihelion get to the sun?
Each planet has a slightly elliptical orbit and perihelion is the name given to the position in the orbit where it is closest to the Sun.
So the Earth's average distance is 149.6 million km with an eccentricity of 1/60 which means that its distance varies 2.5 million km either side of the average. At perihelion, the distance is 147.1 million km about Jan. 3rd each year.
What is lagest planet in solar system?
In our solar system, the planet Jupiter is the largest - at over 1,300 times the volume of Earth (and over 300 times the mass).
Will the sun incinerate the earth?
A planet is fairly hard to destroy - so no.
But climate change can do a lot of damage to the current climate, the way plants and crops grow, which would force us humans to change how and where we live too.
Which theory describes the formation of the solar system from a huge cloud of dust and gases?
Summary:
The Kant Nebular Hypothesis
From wikipedia:
"There is evidence that the nebular hypothesis was first proposed in 1734 by Emanuel Swedenborg.[1][2] Immanuel Kant, who was familiar with Swedenborg's work, developed the theory further in 1755.[4] He argued that gaseous clouds-nebulae, which slowly rotate, gradually collapse and flatten due to gravity and eventually form stars and planets. A similar model was proposed in 1796 by Pierre-Simon Laplace.[4] It featured a contracting and cooling protosolar cloud-the protosolar nebula. As the nebula contracted, it flattened and shed rings of material, which later collapsed into the planets.[4] While the Laplacian nebular model dominated in the 19th century, it encountered a number of difficulties. The main problem was angular momentum distribution between the Sun and planets. The planets have 99% of the angular momentum, and this fact could not be explained by the nebular model.[4] As a result this theory of planet formation was largely abandoned at the beginning of the 20th century."
Edit : As far as I know, the modern theory of how the Solar System was formed
is based on modified version of the "Nebular Hypothesis".
So it's not been abandoned after all.
Note: But the Laplacian model of it has, as the wikipedia article states.
Is the sun the oldest and largest body in the solar system?
The Sun isn't a planet, it's a star. Without having energy from the Sun there can be no life on any planet. It is incorrect to say that the Sun was the "first or oldest planet" because it is most likely that the planets were formed during the same era of time as when the Sun itself was created.
What was ptolemy view on the solar system?
Ptolemy was an early Greek astronomer, and as most people believed, Ptolemy thought the solar system was geocentric. This meant that Earth was at the center, it was the most important thing, and that all celestial bodies circled it.
How many stars are there in our solar system?
Our sun is actually a small star, tons of stars are way bigger than our sun. One. Each star is a sun.
How does the sun compare in location to other objects in the solar system?
Size: The Sun is enormously larger than the Planets. (over 100 times the diameter of the Earth, and about ten times the diameter of Jupiter) Radiation: The Sun emits large quantities of radiation - The planetsemit very small amounts and none in the visible range (except for the artificial light from human activity on Earth and some electric storms on Earth, Venus, Jupiter and maybe Saturn)
Density: The Sun has a mean density of 1.408×103 kg/m3; the Earth 5.515×103 kg/m3
What are five currently named dwarf planets in our solar system?
In order of increasing distance they are: Ceres (king of the asteroids), Pluto, Haumea, Makemake, and Eris (current king of the Kuiper Belt).
How many planets and dwarf planets are in the solar syatem?
Somewhere in the area of 279,722 "minor planets" that we know of according to the minor planet center and growing constantly. These are of course dwarf planets, asteroids, and comets which are the majority of the bodies orbiting our sun.
Distances in our Solar System are measured in?
Normally in Astronomical Units (AU) which is the average distance from the earth to the sun.
