SOLAR SYSTEM

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INVENTIONWho invented the solar system?The solar system was formed from a massive gas cloud, and layouts were observed and refined beginning in the sixth century B.C.E. by early Greek astronomers. Nicholas Copernicus and Galileo Galilei continued observing the solar system well into the Renaissance era

In 200 B.C.E, Greek astronomer Aristarchus invented a model of the solar system in which the sun was in the middle and the planets rotated around it. ystem well into the Renaissance era

Our Solar System

#The Solar System is the sun together with the eight planets and all other celestial bodies that orbit the sun.

#Everything in the Solar System orbits or revolves around the Sun in a counter-clockwise direction.

#The Sun contains around 98% of all the material in the Solar System

#The Solar System is estimated to have formed between 4.53 and 4.58 billion years ago.

Solar System

MERCURY

Closest to the sun Smallest planet Rotates once every 59 earth days. One day on Mercury lasts 176 Earth days. Very dry, hot, and almost airless

VENUS

Second closest

planet to the sun

Brightest celestial

body besides the moon and

sun.

Cannot be seen in the middle of the night

Can be observed in the east at

sunrise

EARTH

3rd from the sun

5th largest planet in the solar system

More than 4.5 billion years old

Has one natural satellite we call

the moon.

MARS

Fourth from the sunOnly planet whose surface can be seen in detail from the Earth Reddish in color, the atmosphere of Mars is made of carbon dioxide

JUPITER

The Fifth planet from the sunLargest planet in the solar system Has at least 39 months

SATURNSixth planet from the sun Has at least 31 moonsThe surface on Saturn consists of liquid and gas

URANUSSeventh planet from the sun 1st planet discovered with a telescopeAtmosphere is a mixture of Hydrogen, Helium, and methane Does not have a solid surface

NEPTUNE

8th and farthest planet from the sunThe atmosphere is mostly hydrogen and helium Has 8 known moons

SUN

Located 93,000,000 miles from EarthClosest star to EarthAt least 4.5 billion years old Has a surface temperature of 10,000 degrees and a center temperature of 27,000,000 degrees Fahrenheit.

MOON

Bigger than PlutoOnly object in the Solar System visited by humans. A lunar month is 29.35 days, 1 new moon to the next. The moon’s gravitational pull on Earth is the main cause of the ocean’s tide.

ALTHOUGH WE TEND TO THINK ONLY ABOUT THE SUN AND THE PLANETS WHEN WE CONSIDER OUR SOLAR SYSTEM, THERE ARE MANY OTHER TYPES OF BODIES THAT HUDDLE AROUND THE SUN ALONG WITH EARTH AND ITS PLANETARY BROTHERS AND SISTERS. THE SOLAR SYSTEM INCLUDES MOONS (AND SOME OF THOSE MOONS HAVE MOONS), SUPERNOVA EXPLOSIONS, COMETS, METEORS, ASTEROIDS, AND PLAIN OLD SPACE DUST. TO BE SURE, THERE ARE MORE OBJECTS IN OUR SOLAR SYSTEM, SOME OF WHICH HAVE YET TO BE DISCOVERED.

WHAT ELSE IS IN OUR SOLAR SYSTEM?

ASTEROIDS

The Asteroid Belt is the space between Mars and JupiterIt contains irregularly shaped chunks of debris called asteroidsAsteroids made of rock and metal. Mostly nickel and iron

COMITS1.A comet is an icy small Solar System body that, when passing close to the sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail. 

2. Comets usually have highly eccentric elliptical orbits, and they have a wide range of orbital periods, ranging from several years to potentially several millions of years.

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