All You should know about Our solar system

Long ago, human being knew very little about the universe except for the sun, moon, and stars which seem to be far away. With the emergence of the lenses, the humans were able to have a more clear image of the universe and more how the universe system. Before the 17th century, people use to believe that the earth was at the center of the universe and all heavenly bodies revolve around it. Later, astronomers were able to prove that the sun was in the center of our solar system. Further research and improvements in lens technology lead to more discoveries and enable us to see the surface of the moon clearly and to discover other new planets like Mercury the Venus. After further research, the scientists discover that each planet which is spherical in nature as another object revolving around it as moons. Some planets have one while others have several. Our universe is estimated to be 4.6 million years old. Other celestial bodies such as comments and asteroids and meteoroids were also discovered. So far, a lot of information has been gathered about our universe.

The sun

This is our immediately star in the located at the centre of our solar system. All the heavenly bodies revolved around it including the planets, asteroids and the comments. It’s surface at a temperature of 2milion degree Celsius which is then transmitted to a whole solar system through radiation process. The sun is big, its size and thermodynamic activities can generate greater gravity to hold our solar stem in position. The sunlight we receive on earth is the radiation that occurs 8 minutes ago on the surface of the sun.


Mercury is 70 million kilometres from the sun. Its surface resembles our moon surface; it is shared by many impacts of craters from collisions with meteoroids and comets. Its surface receives a temperature of 430-degree Celsius during the day and drops to -180 during the night since the planet lacks the atmosphere. Traveling at a speed of 50 kilometres per second, mercury goes round the sun in 88 days. Marine 10 is the first spacecraft to the moon.


Venus and the earth are similar in size, mass, density, composition, and gravity. There is evidence of volcano in its surface around 700 billion years ago. Its atmosphere is mainly carbon dioxide and sulphur. Magellan mission was the first spacecraft in its orbit. Venus retrograde (east to west) in its axis and revolve around the sun in 255 days.


Earth is the 5th largest planet in the solar system with its surface covered by 70% of water. It rotates about its axis causing day and night it takes 365 years to revolve around the sun. The earth is the only planet that supports life in its thin atmosphere. The earth as one mood that orbits it in 28 days.


This is the most studied planet in the solar system. For decades, people speculate that bright and dark areas are patches of vegetation. There are waters in its poles. Mars is working as two moons, Phoebes and Deimos. It has the largest volcano in the solar are no magnetic fields.


These are a rocky remnant left behind during the formation of the solar system about 4.6 million years ago. Located between Mars and Jupiter. Their size varies from 950 kilometres to 1 kilometre.


This is the largest planet in the solar system. It has 64 known moons including IO, Europa, Ganymede, and Calisto. Its atmosphere is helium and hydrogen.


This is the second most lag planet. Saturn as a ring which is 10meters wide consisting billions of individual particles mostly ice. It has 62 moons including Titan, Iapetus, and Phoebe. At Saturn’s centre is a dense core of rock, ice, water, and other compounds made solid by the intense pressure and heat


First observed by William Herschel. It rotates like Venus (east-west) It takes 84 years to make a complete revolution. Its atmosphere is made of hydrogen, helium and small traces of methane of water and ammonia. It has 27 known moons including Miranda and Italian. It is 2870 million kilometres from the sun.


It is the furthest planet in our universe with 14 moons including Triton. It takes 164 years to orbit the sun.

Kuiper Belt

This is a belt similar to asteroid belt, but it is larger.  It exist beyond Neptune and is a home to draft planets including Pluto and Eris. It is also the source of comments due to collision or passing by a star.


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What is astronomy?

Astronomy is the science of celestial objects, the space, and the universe as a whole. Astronomy studies the sun and the moon, along with the stars, comets, galaxies, dust, planets, gas, and all other bodies or phenomena that is non-Earthly. Astronomy has been around since the ancient times. For example, in 200 B.C. the Babylonians are known to of documented the positions of many stars and predicted events that would take place on earth. Astronomy is used in physics, mathematics, and chemistry, to help explain the evolution, origin, and phenomena of the object. Astronomy is split into two categories: observational and theoretical. Observational astronomy is when data is acquired from observing astronomical objects. Theoretical astronomy is the development of the computer models that describe astronomical phenomena. One cannot be used without the other due to the fact that one confirms the results of the other. In the beginning, astronomy was used to help predict that objects that could be seen moving. These observations are how we came about having seasons, when the right time is to plant a certain crop and understand the year and why some are longer. That also has explained the motion of the planets along with the Sun and Moon. At that time the Sun and Moon we believed to rotate around the Earth. Astronomy was used to estimate the size and the distance of the Sun and Moon.

What kind of astronomers study stars?

A stellar astronomer is an astronomer who studies the sun and stars. Stellar astronomers study how stars get their light and what they are made of. Stars are used to help determine the distance in the universe. They study novas and supernovas which are stars that just suddenly brighten. One problem stellar astronomers have a hard time in this field is the distance from Earth to the closest star. Many astronomers have helped in the documentation of stars throughout history. A well-known Polish astronomer is Nicolas Copernicus the reason is he discovered that the Sun is the center of the universe instead of the Earth. An astronomer named Hipparchus documented 1020 stars and almost all the constellations in the northern hemisphere. The number of stars in the universe will always change. The naked eye is thought to be able to see about 6,000 stars on an average night. The northern hemisphere the number dramatically drops to 3,000. The reason this is because of no matter where you are you are never going to see the whole sky. Another well-known astronomer is Nicolas-Louis de Lacaille he documented 9,766 stars in just eleven months. He invented fourteen constellations that are still recognized today but are made from very faint stars. One that is still seen in the sky today is the Air Pump that he created around 1750. This constellation is now known as Pump. Although believed to be the same stars and constellations are very different. Stars are balls of plasma that lets off light because of nuclear fusion and its gravity holds it together. A constellation is a group of stars that have a certain region in the sky and create an image if created by a line.  A star moves, unlike a constellation.

What are constellations?

Constellations are a group of stars that are in a pattern. They usually represent mythological gods or creatures, animals, or manufactured devices. Over 2500 years ago the Greeks identified the first constellation. Constellations vary from night to night due to the rotation of Earth allowing them to be used to help determine a season. Constellations have changed in size and shapes through the years and others have disappeared while others are only used by certain cultures. There are eighty-eight constellations that are named and most known. The largest constellation is Hydra; it is named after the multi-headed sea serpent that Hercules encounters. The most known constellation is called the Ursa Major which contains the Big Dipper. The constellations are separated into the southern and northern sky. The constellations in the northern sky are from Classic Greek legends. The southern constellations are modern inventions. Each constellation is different in size and shape. After the telescope astronomers have documented so that they can be used to navigate in the 14th to 16th century by sea travelers. Around the Milky Way is a dark cloud constellation that looks to be an emu. There are twelve constellations that are known as the zodiac signs that date back to prehistory. Although believed to be the same stars and constellations are very different. Stars are balls of plasma that lets off light because of nuclear fusion and its gravity holds it together. A constellation is a group of stars that have a certain region in the sky and create an image if created by a line. A star moves, unlike a constellation.

What is the relationship between constellations and the zodiac signs?

The zodiac signs are the constellations that mark the path the sun travels throughout the year. The zodiac signs use to align with the sun. For example, Aries is the zodiac sign for March 21 through April 19 which would mean the sun would appear in this sign through these dates. This has changed because of the way that we have determined the time, such as a year is 364 days and not 364.25 days. Also, the signs are not equal signs and shape. Most of the today’s constellations are more known to the Greek culture. Although we only use twelve zodiac signs there are actually thirteen signs that the sun travels through. The thirteen signs are:

  • Capricorn
  • Aquarius
  • Pisces
  • Aries
  • Taurus
  • Gemini
  • Cancer
  • Leo
  • Virgo
  • Libra
  • Scorpio
  • Ophiuchus
  • Sagittarius

The thirteenth sign is known as the Ophiuchus, or the Serpent Bearer, it sits between Sagittarius and Scorpius. The zodiac signs are great to help understand the orbits of the Sun, Earth, and Moon. The zodiac signs are all based on of Earth bound elements such as air (Gemini, Libra, and Aquarius), fire (Aries, Leo, and Sagittarius), water (Cancer, Scorpio, and Pisces), and earth (Taurus, Virgo, and Capricorn).

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The Top 10 Biggest Constellations

As a navigation tool and a spiritual guide in the ancient times, the constellations are a reminder that the night sky and stars are the big sources of knowledge and mysteries. Every one of the constellations has its special meaning, shape, visibility, stars within them that are highly important, place in the universe and a beautiful folklore story behind them. Use your eyes and observe the night sky to find the mysterious and unique beauty of the constellations and the stars within them. How to find them in the sky? Which are the biggest constellations?

What are constellations?

For constellations to be described simply, you should know that they are a group of particular stars together in one place as patterns of imagination on the celestial sphere. In Latin, the word for constellation has the meaning of a ‘’group of stars’’.

They always have a special spiritual explanation behind them. Many of them through history represented kinds of animals, a mythological creature, a mythological person or gods. Today, the real purpose of the constellations is discovered, they help people to find about stars and how to differentiate them.

Really dark and highly clear sky can give you the chance to see from 1500 to 2000 different stars. That many stars in one place are hard to difference. Because of that, the constellations allow you to differentiate the stars better by breaking manageable bits of the stars up in the sky. Giving you a star atlas of the sky with grouping the stars by its belonging

Aside from the clear and dark sky, different constellations can be seen in different parts of the year, different seasons and months, and some of them can be seen only on a specific hemisphere of the Earth.


The top 10 biggest constellations


Astronomers spent many years researching the sky, the stars, and their grouping into constellations, finding and ranking the constellations that are the biggest. Every one of the constellations has a name based on the form on the sky their form.

The top 10 biggest constellations are:

  • The Hydra, also known as The Sea Serpent. Not only this constellation is the biggest but also is the largest in the sky space.
  • The Virgo, or known as The Virgin.
  • The Ursa Major, known as The Great Bear. Highly popular and known among people, its name comes from the fact that the shape on the sky formed by this constellation looks like a bear.
  • Cetus, also known as The Whale or as The Sea Monster. Forming a whale shape in the sky gave the name of this constellation.
  • The Hercules constellation, fifth in ranking and known as The Hero Hercules. This name comes from the shape in the sky like a warrior that holds a sword in the hand, looking like the mythological half god Hercules.
  • Eridanus also known as The River Eridanus. The stars in these constellations, one by one in a line, are forming a shape as the river Eridanus.
  • Pegasus or The Winged Horse. The amazing and breathtaking constellation that got its name from the fact that the stars in the constellations form a beautiful winged horse.
  • The Draco or known as The Dragon. The stars contained in this constellation form a huge dragon on the sky.
  • The Centaurus, also known by its other name The Centaur. This constellation forms a mythological creature in the sky, half person, and half a horse.
  • And the tenth constellation based by its bigness is Aquarius known as The Water Bearer. Similar as The Centaur, this constellation also gives a mythological form on the sky, creating an Aquarius.


How to find constellations in the sky?

Knowing the names and placement of the constellations on the sky and the specific shapes they form on the sky, you can use the clear and dark sky to explore their beauties.

For better assistance, you should try and use a sky map. The map will help you to look for constellations in the right direction and specific time of the year suitable for a particular constellation.

You can see constellations better far from the city, where the sky is clearer. Also, darker sky helps too. If you want detailed experience, try using a telescope or maybe binoculars to see the features of the constellations better.

Trying to find easier the constellation you are interested in, try to orient yourself towards the North Star. With finding the North Star you will be able to find every constellation on the sky faster.

Which constellations you will be able to see depends on the season, time of the year, month, and your location. Using your sky map, learning about the shape and location of the constellations would definitely help you with your night sky exploring of the stars and their beauty.

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