Most of the time, astronomers derive information from an analysis of the light or the motions of celestial bodies, a process that, to the uninitiated, may seem more like sorcery than science.
In fact, astronomy is a challenging science, but not because the universe is inaccessible in the conventional sense..
The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names.
Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations.
The observable universe contains an estimated 1022 to 1024 stars..
Astronomy – studies the universe beyond Earth, including its formation and development, and the evolution, physics, chemistry, meteorology, and motion of celestial objects (such as galaxies, planets, etc.) and phenomena that originate outside the atmosphere of Earth (such as the cosmic background radiation)..
The first issue, August 1973, held 48 pages and five feature articles, plus information about what to see in the night sky that month..
Astronomy – studies the universe beyond Earth, including its formation and development, and the evolution, physics, chemistry, meteorology, and motion of celestial objects (such as galaxies, planets, etc.) and phenomena that originate outside the atmosphere of Earth (such as the cosmic background radiation)..
The first documented records of systematic astronomical observations date back to the Assyro-Babylonians around 1000 BCE.
From this cradle of civilisation in Mesopotamia – in the southern part of present-day Iraq – astronomers had built up knowledge of the celestial bodies and recorded their periodic motions..
2 Answers.
The consensus view among cosmologists is that the age of the Universe is approximately 13.8 billion years old.
This has not changed.
There was a recent paper claiming the Universe is approximately 26.7 billion years old, but there are good reasons to be skeptical..
Knowledge of the stars and other galaxies has been a part of human culture since we first discovered they existed.
By studying astronomy, you gain a basic understanding of physics, chemistry, and mathematics – the essential building blocks for more specialized fields of study..
Both words are quite old (astronomy is from the 12th century, and astrology from the 14th), and both share a root with the word disaster (the Greek astron, meaning “star”).
In modern use the two words have quite different meanings, but for hundreds of years they were synonymous..
Astronomy is the study of everything in the universe beyond Earth's atmosphere.
That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars ..
Astronomy is the scientific study of celestial bodies.
That means stars, galaxies, planets, moons, asteroids, comets and nebulae are studied, as are supernovae explosions, gamma ray bursts, and cosmic microwave background radiation..
Astronomy – studies the universe beyond Earth, including its formation and development, and the evolution, physics, chemistry, meteorology, and motion of celestial objects (such as galaxies, planets, etc.) and phenomena that originate outside the atmosphere of Earth (such as the cosmic background radiation)..
We're looking back in time the further out we go because it takes time for light to travel to us.
So the furthest out we can see is about 46.5 billion light years away, which is crazy, but it also means you can look back into the past and try to figure out how the universe formed, which again, is what cosmologists do..
Astronomy is the scientific study field about phonomenons and naturally existing celestial objects (galaxies
Planets
Moons). It is compassed to the branch mathematicsPhysics
Chemistry and meteorology.
The Astronomy Wiki strives to be the most accurate and extensive resources of all things astronomy; including :
Planets (in and even outside of our Solar System )
The Astronomy Wiki strives to be the most accurate and extensive resources of all things astronomy; including :
Planets (in and even outside of our Solar System )
Astronomy is the scientific study field about phonomenons and naturally existing celestial objects (galaxies
Planets
Moons). It is compassed to the branch mathematicsPhysics
Chemistry and meteorology.
