Information gallery

"Eyes are useless when the mind is blind"

ads header
Showing posts with label Astronomy. Show all posts
Showing posts with label Astronomy. Show all posts

Thursday, March 16, 2023

Types of planets


There are several types of planets in our solar system and beyond, each with its unique characteristics and properties. Here are some of the most common types of planets:


Terrestrial planets: 

Terrestrial planets are also known as rocky planets and are characterized by their solid, dense surfaces. They are typically smaller in size than gas giants and are composed primarily of rock and metal. The four terrestrial planets in our solar system are Mercury, Venus, Earth, and Mars.


Gas giants: 

Gas giants are also known as Jovian planets and are characterized by their large size and gaseous composition. They are primarily composed of hydrogen and helium and have no solid surfaces. The four gas giants in our solar system are Jupiter, Saturn, Uranus, and Neptune.


Ice giants: 

Ice giants are similar to gas giants but are primarily composed of ices such as water, ammonia, and methane, along with rock and metal. They have lower mass and gravity than gas giants and have a distinct blue-green color. The two ice giants in our solar system are Uranus and Neptune.


Dwarf planets: 

Dwarf planets are similar to planets but have not cleared their orbits of debris and other objects, which is one of the criteria used to define a planet. They are typically smaller than the eight major planets and are found in the outer solar system. The five recognized dwarf planets in our solar system are Pluto, Ceres, Haumea, Makemake, and Eris.


Exoplanets: 

Exoplanets are planets that orbit stars outside of our solar system. They can be classified into several types based on their size, composition, and distance from their host star. Some of the most common types of exoplanets include hot Jupiters, super-Earths, and ice giants.


In conclusion, planets come in different types and sizes, each with its unique characteristics and properties. Understanding the different types of planets can help us better understand the formation and evolution of our solar system and the universe as a whole.


Wednesday, March 8, 2023

Concept of Quran about Astronomy



The Quran, the holy scripture of Islam, contains numerous references to astronomy, including descriptions of celestial bodies, their movements, and their relationships with each other. Muslims believe that the Quran is the word of God, revealed to the Prophet Muhammad, and therefore view its teachings as authoritative.

 


One of the most well-known astronomical references in the Quran is the mention of the creation of the heavens and the earth in the opening chapter and throughout the book. The Quran also describes the sun and the moon as "two signs" of God's power and guidance and emphasizes their roles in determining the passage of time. 

 Concept of orbits

The Quran also describes the orbits of the sun, moon, and planets, and the various phenomena associated with them, such as eclipses and the phases of the moon. In Surah Al-Anbiya, verse 33, the Quran says that "It is He who created the night and the day, and the sun and the moon, each floating in its orbit."

 



 Constellations and Big Dipper

Additionally, the Quran refers to the constellations, including the Pleiades (Surah Al-Najm, verse 9) and the Big Dipper (Surah Al-Waqiah, verses 75-77), and describes the stars as being created by God for guidance and navigation (Surah Al-An'am, verse 97).




Muslim scholars throughout history have studied and interpreted these astronomical references in the Quran, using them as a basis for their scientific understanding of the universe. Many modern Muslim scientists also view the Quran as a source of inspiration and guidance in their scientific work, and some have even used its teachings to make discoveries and advance scientific understanding.











Saturday, September 17, 2022

Moon



Of all the celestial bodies that capture our attention and fascination as astronomers, none has a greater impact on life on Earth than its satellite, the Moon. Come to think of it, we think the moon is so important that we call a single orbital sphere a moon, unlike the moons of other planets we've named. According to Nikola Tesala, Modern science says: ''The sun is the past, the earth is the present, the moon is the future". From an incandescent mass, we have originated, and into a frozen mass, we shall turn. Merciless is the law of nature, and rapidly and irresistibly we are drawn to our doom.

The Moon influences in many ways how we think, how we feel about romance, poetry, and literature, and even how we feel about everyday life. Primitive societies aren't the only ones that attribute mood swings, changes in social behavior, and weather changes to the moon. Even today, the full moon can have a powerful effect on these forces, and although we cannot explain them scientifically, we are aware of them. According to J. Johnston, "The very word 'lunatic', now thankfully outmoded, is an indicator of the former pervasiveness of this conviction among the general public and medical professionals alike."

The most obvious physical phenomenon experienced is ocean tides. Tides are an essential factor in regulating the entry and exit of marine life and coastal fishermen. But few people know that even tides can affect inland waters and even solid Earth at times when the Earth's orbit aligns with the Sun and Moon. Long ago, when the Moon's orbit was approaching the Earth, it was the lunar activity that brought about major changes in continental topography and continental drift. This reflects the powerful influence the Moon has had on both human history and world geographic history.

Sometimes there is a question that where the moon came from. Was it a planet that got too close to the Earth and got caught in our orbit? It was the result of a collision that resulted in this large "chuck" turning into an orbiting object. This explains the compositional similarities observed in many of NASA's lunar exploration missions.

But this background also highlights another important influence the Moon has had on Earth's evolution that is largely unrecognized. It is the stabilization of the Earth's orbital pattern. Most people know that the earth is an egg-shaped sphere, not round. Honestly, the earth would shake. Without the stabilizing effects of the Moon, this shape would change dramatically, and the axial tilt, i.e. the polar ice caps would change dramatically with each seasonal rotation, more so than we are accustomed to. would also cause much more violent and dramatic climate change. If the moon weren't there to "align the Earth" and keep the Earth's orbit stable, life as we know it wouldn't be here. It may not have evolved.

The third major impact of the Moon stems from this origin, as a result of an impact that "rips" the Moon's body out of the Earth's evolving core. Because of this disruption in the evolution of our planet's core, the metals that are normally intact in the core of the planet are scattered geographically up and down in different ways. is concentrated deep in the core. However, the moon-orbiting impact has made the metals readily available and easily mined, vital to the development of our industrial and technological culture. Again, this is something we can appreciate for the presence of this beautiful moon in the sky.