Presentation is loading. Please wait.

Presentation is loading. Please wait.

Astronomy Astronomy = study of celestial objects and phenomena outside Earth’s atmosphere Includes galaxies, stars, planets, moons, cosmic radiation, etc.

Published byTimothy Rich Modified over 9 years ago

Similar presentations

Presentation on theme: "Astronomy Astronomy = study of celestial objects and phenomena outside Earth’s atmosphere Includes galaxies, stars, planets, moons, cosmic radiation, etc."— Presentation transcript:

1 Astronomy Astronomy = study of celestial objects and phenomena outside Earth’s atmosphere Includes galaxies, stars, planets, moons, cosmic radiation, etc. Celestial object = Every object outside of Earth’s atmosphere

2 Space 1.Universe = includes everything in existence. ~13.8 billion years old. 2.Galaxies = collections of billions of stars. Our galaxy is the Milky Way. 3.Solar System = The Sun and whatever revolves around it (heliosphere). Includes planets, dwarf planets, comets, and asteroids.

3 Milky Way

4

5 Size and Scale Sizes and distances in astronomy are extremely large. Scientists (and the world) use the metric system How many feet in a meter? How many miles in a kilometer? How many grams in an ounce?

6 Solar System Distances Astronomical Unit (AU) = average distance from Earth to Sun (93 million miles). Mercury is 1/3 of an AU. Neptune is ~40 AU.

7 Universe Distances Light-year (ly) = distance light travels in a year. Ly = 9.5 trillion kilometers (6 trillion miles) Parsec = 3.3 Ly

8 Some Distances -- Proxima Centauri (nearest star) = 4.3 light-years away. -- The Crab supernova is about 4,000 light-years away. -- The Milky Way Galaxy is about 150,000 light-years across. -- The Andromeda Galaxy is 2.3 million light-years away.

9 Let’s Take a Walk Sun = soccer ball Mercury = pinhead (10 steps) Venus = peppercorn (19 steps) Earth = peppercorn (26 steps) Mars = pinhead (40 steps) Jupiter = quarter (135 steps) Saturn = nickel (247 steps) Uranus = dime (496 steps) Neptune = dime (777 steps) Pluto = grain of sand (1,019 steps) Light Year = 1,000 miles away

10 Size and Distance The Sun is 600x larger than all the planets put together. Using scale from walk: Moon = 2” from Earth Light-year = 1,000 miles Heliosphere = 2,000 miles

11

12 Scale Model of Solar System

13 Galaxies How many stars in Milky Way? ~200 billion How many galaxies in the universe? ~100 billion (or more) Are there more stars in the universe than grains of sand on Earth’s beaches? 100 stars for every grain of sand on Earth

14 Hubble Deep Space Field 12 billion light years away. 10,000 galaxies shown. Area = tiny point in space.

Download ppt "Astronomy Astronomy = study of celestial objects and phenomena outside Earth’s atmosphere Includes galaxies, stars, planets, moons, cosmic radiation, etc."

Similar presentations

Solar System by Jake Burgess

Solar System by Jake Burgess
The Metric System - BIG Okay, so you have gotten a look at the metric world of the small and very small, but now it is time to look at the metric world.

The Metric System - BIG Okay, so you have gotten a look at the metric world of the small and very small, but now it is time to look at the metric world.
Distances in Space.

Distances in Space.
OUR COSMIC ADDRESS Each of us has an address. Ours is: The Denver Museum of Nature and Science 2001 Colorado Blvd. Denver, Colorado 80205-5798 But what.

OUR COSMIC ADDRESS Each of us has an address. Ours is: The Denver Museum of Nature and Science 2001 Colorado Blvd. Denver, Colorado But what.
Chapter 1: A Modern View of the Universe

Chapter 1: A Modern View of the Universe
Space Flight to the Stars. Celestial Objects “ Celestial” means sky Objects we can see in the sky such as the Sun, Moon, Earth and other planets are all.

Space Flight to the Stars. Celestial Objects “ Celestial” means sky Objects we can see in the sky such as the Sun, Moon, Earth and other planets are all.
Astronomy 1001 Syllabus Syllabus: Lecture notes:

Astronomy 1001 Syllabus Syllabus: Lecture notes:
U2: Astronomy - Measuring Space Distances FLIP LESSON.

U2: Astronomy - Measuring Space Distances FLIP LESSON.
Astronomy class: Pages 2-9

Astronomy class: Pages 2-9
Vocabulary.  Our solar system includes the sun, the planets and many smaller objects.

Vocabulary.  Our solar system includes the sun, the planets and many smaller objects.
Distances in Astronomy. Which unit would you use to measure your height? – Millimeters – Centimeters – Meters – Kilometers Talk with a partner about why.

Distances in Astronomy. Which unit would you use to measure your height? – Millimeters – Centimeters – Meters – Kilometers Talk with a partner about why.
Touring the Night Sky. What is Astronomy? Astronomy is the branch of science that studies objects beyond Earth. These “objects” include the Sun, billions.

Touring the Night Sky. What is Astronomy? Astronomy is the branch of science that studies objects beyond Earth. These “objects” include the Sun, billions.
OUR SOLAR SYSTEM Our solar system is nearly 5 billion years old.

OUR SOLAR SYSTEM Our solar system is nearly 5 billion years old.
 Objective 1 Compare the size and distance of objects within systems in the universe.  Use the speed of light as a measuring standard to describe the.

 Objective 1 Compare the size and distance of objects within systems in the universe.  Use the speed of light as a measuring standard to describe the.
The Size and Distance Scale Of The Solar System Our Earth is just one of several Planets that revolve around our Sun, the primary and central object of.

The Size and Distance Scale Of The Solar System Our Earth is just one of several Planets that revolve around our Sun, the primary and central object of.
How large are the objects in the solar system? Let’s view them to scale –Different scale than text: sizes and distances both on same scale –Sun: 1.39 x.

How large are the objects in the solar system? Let’s view them to scale –Different scale than text: sizes and distances both on same scale –Sun: 1.39 x.
Distances in our Universe The universe is so large that we must use special units of measurement. Kilometers and miles just won’t cut it.

Distances in our Universe The universe is so large that we must use special units of measurement. Kilometers and miles just won’t cut it.
Important Course Information Syllabus and everything else: How to make a moon observation:

Important Course Information Syllabus and everything else: How to make a moon observation:
Chapter 1 Our Place in the Universe. 1.1 Our Modern View of the Universe What is our place in the universe? How did we come to be? How can we know what.

Chapter 1 Our Place in the Universe. 1.1 Our Modern View of the Universe What is our place in the universe? How did we come to be? How can we know what.
 Earth tilts at 23 ° and causes the seasons.  Earth revolves around the Sun.  The moon revolves around the Earth.  Moon reflects the sun’s rays and.

 Earth tilts at 23 ° and causes the seasons.  Earth revolves around the Sun.  The moon revolves around the Earth.  Moon reflects the sun’s rays and.

Similar presentations

Ads by Google