How far is 1 light-year in kms?
A light-year is the distance a beam of light travels in a single Earth year, which equates to approximately 6 trillion miles (9.7 trillion kilometers)..
How large is our galaxy astronomy quizlet?
The fruits of scientific and technological development in astronomy, especially in areas such as optics and electronics, have become essential to our day-to-day life, with applications such as personal computers, communication satellites, mobile phones, Global Positioning Systems, solar panels and Magnetic Resonance .
What are the 3 types of astronomy?
Astronomy is the study of the stars, planets, and other objects that make up the universe..
What are the 4 types of astronomy?
Astronomy is the study of the stars, planets, and other objects that make up the universe..
What are the 4 types of astronomy?
Stars are born in cold, relatively dense molecular clouds.
As a cloud fragment collapses under gravity, it becomes a rapidly rotation protostar surrounded by a spinning disk of gas in which planets may form.
The protostar may also fire jets of matter outward along its poles..
What are the basics of astronomy?
By studying the cosmos beyond our own planet, we can understand where we came from, where we are going, and how physics works under conditions which are impossible to recreate on Earth..
What is astronomy the study of quizlet?
Astronomy has and continues to revolutionize our thinking on a worldwide scale.
In the past, astronomy has been used to measure time, mark the seasons, and navigate the vast oceans.
As one of the oldest sciences astronomy is part of every culture's history and roots..
What is astronomy the study of quizlet?
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 .
It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles..
What is astronomy the study of quizlet?
Astronomy is the study of the stars, planets, and other objects that make up the universe..
What is astronomy the study of ________________?
Our galaxy consists of a flat disk with spiral arms surrounding a central bulge, with a roughly spherical halo surrounding everything.
Whats the galaxies diameter? The entire galaxy is about 100,000 light years in diameter..
- A year is defined as: The time is takes for Earth to complete an orbit around the Sun.
- The Ancient Greeks used the word astron for "star," so it only makes sense that astronomy would involve the study or the stars (and other unearthly topics).
Someone who studies or works in astronomy is an astronomer, and one of the main tools of the trade is the telescope.
