Astronomy is the study of space. Ever since the ancient times, people have always looked up to see the Sun, stars, moon, planets, and anything else that appears in the night sky. However, astronomy has to do with more that just looking. Why does the moon have phases? Where do planets and stars come from? What else is out in deep space? These are only some of the questions that astronomy is seeking the answers to.
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We sent your lesson request to. The confirmation will include a link to start the lesson. Just sign into Chegg Tutors at the scheduled start time and visit your unique link. The ninth planet was Pluto and it is even further away from the Sun than Neptune. Astronomers decided that Pluto was too small to be called a planet, so now there are only eight planets. The Sun is a star, it is a huge ball of very hot gas. The Sun is about 4.
There are more than billion stars in the Milky Way and there are many different types of star. Scientists group stars together by how big they are and how bright they are.
Some examples are red dwarfs and supergiants. A red dwarf is a star about half the size of the Sun and a lot less bright than the Sun. A supergiant star is about 70 times as big as the Sun and can be , times as bright. It is red dwarf that is smaller and colder than our Sun and gives off a lot less light.
Even though it is the closest star outside the Solar System, the light from it is too faint to see except with a telescope. Proxima Centuri is 24 trillion miles from Earth and light from it takes four years and three months to reach Earth. Mercury — this is the closest planet to the Sun. It is the smallest planet and is made of rock.
It is so close to the Sun that it only takes 88 days for it to complete its orbit and is much hotter than Earth. Venus — Venus is the next planet from the Sun after Mercury. It is also made of rock. It is about the same size as Earth.
It takes days to travel around the Sun. Earth — This is where we live! Earth is made of rock and is the only planet where water is liquid. The other planets are either too hot or too cold. Earth takes days to travel around the Sun. Mars — Mars is a little smaller than Earth, but a lot further out. Jupiter — Jupiter is the largest planet in the Solar System. Jupiter has 66 moons, one of them, Ganymede, is bigger than Mercury.
Jupiter is five times as far from the Sun as the Earth is and takes almost 12 years to travel around the Sun. Saturn — Saturn is famous for its rings. The rings were discovered in by Galileo and are made up of huge numbers of small lumps of ice and dust mostly ice. The pieces in the rings may be as small as a millimetre or as large as a few metres across.
You could fit 63 planets the size of Earth inside Uranus. Neptune — Neptune is the farthest planet from the Sun. It is 30 times as far from the sun as Earth and takes years to travel around the Sun. Asteroid — Asteroids are bodies of rock and ice in space.
Millions of asteroids orbit the Sun -most between Mars and Jupiter. They vary in size between 1 metre across and miles across. Atmosphere — the layer of gas around a planet Comet — a comet is a body of ice, dust and bits of rock that passes through space leaving a tail of ice and dust behind it.
A comet may be up to 25 miles across. Day — the length of time it takes the Earth to spin all the way around so that you get a night and a day — 24 hours Galaxy — a large group of stars, all orbiting a central point. Gravity — the force that attracts a moon to a planet, or a planet to a star Light Year — the distance that light travels in one year. Some planets have many moons. Earth has just one, called The Moon. Solar System — the Sun and the collection of stars Star — A star is a huge ball of very hot gases, that gives off lots of light and heat.
Some stars have planets orbiting around them, but not all do. Sun — the star in our Solar System Universe — The Universe is everything that exists — all the galaxies, all the stars, all the planets and everything in between Year — the length of time it takes the Earth to travel around the Sun — days.
Access thousands of brilliant resources to help your child be the best they can be. What is the Solar System? Everything in the Solar System revolves around the Sun.
The Sun is a star — a massive ball of hot gas that gives off light and heat. There are eight planets that orbit around the Su n. The closest planet to the Sun is Mercury, and the farthest away is Neptune. The biggest planet is Jupiter, and the smallest planet is Mercury. The Earth is the only planet that we know has creatures living on it.
How many planets are there in our solar system? Until , there was thought to be 9 planets in the Solar System. In , the International Astronomical Union decided that Pluto is no longer a planet, so there are now only 8 planets in the Solar System.
Homework Help: Search our sites: Science Games: Life Processes & Living Things. Humans. Plants. Food Chains. We live on planet Earth - just one of eight planets in our Solar System. The Sun is in the centre of our Solar System and it is our light source. Earth and space Why we have day time and night time on Earth, seasons and why the.
Critical thinking curriculum journal - planets homework help. By / September 11, ; Today i went to this tutoring session where graduate students could read my essays and critique them and boy did they tear me up!!! samuel johnson essay on shakespeare. best english essay writers online. There are two main types of planets in the solar system. The four planets nearest the Sun—Mercury, Venus, Earth, and Mars—are called inner planets. They are rocky planets about the size of Earth or somewhat smaller. Jupiter, Saturn, Uranus, and Neptune are called gas giants. They are made up mostly of gases and have no solid surfaces.
The two main categories separating the different genres of literature are planets homework help fiction and nonfiction Definition of regular - arranged in or constituting a constant or definite pattern, especially with the same space between individual instances, recurring. Myth functional resume for sales manager Man's Award-winning Mythology Homework Help. The new solar system may have hundreds of planets, including asteroids, moons, and dwarf planets. Rather than memorize hundreds of names, it’s more important to read more.