Sun Sun Average Distance from Earth: 150 million km Diameter: 1,390,000 km Mass: 333,000 Earth Masses Age: ~ 4.6 billion years Temperature: 5,505°C The Sun is a star at the center of our Solar System. It provides Earth with the energy needed to sustain life. The International Astronomy Road Show Mercury Mercury Average Distance from Earth: 91.7 million km Average Distance from Sun: 58 million km Diameter: 4,878 km Mass: 0.055 Earth Masses Orbital Velocity: 47.4 km/s Gravity: 0.38 g Temperature Range: -173 to 427 ℃ Mercury is the smallest planet in our solar system, and it is the closest planet to the Sun. Length of orbit: 88 Earth days Length of one day: 58 days and 15 hours The International Astronomy Road Show Number of moons: 0 Venus Venus Average Distance from Earth: 41.4 million km Average Distance from Sun: 108 million km Diameter: 12,102 km Mass: 0.815 Earth Masses Orbital Velocity: 35.0 km/s Gravity: 0.904 g Average Temperature: 462 ℃ Venus is a rocky planet with volcanoes and a very thick atmosphere. Length of orbit: 224.7 Earth days Length of one day: 116 days and 18 hours Number of moons: 0 The International Astronomy Road Show Earth Earth Average Distance from Sun: 150 million km Diameter: 12,658 km Mass: 1 Earth Mass Age: 4.5 - 4.6 billion years old Orbital Velocity: 29.8 km/s Gravity: 1 g Average Temperature: 7.2℃ Earth is our home planet! It is very special because of its ability to support life. Length of Orbit: 365.24 days Number of moons: 1 The International Astronomy Road Show Moon Moon Average Distance from Earth: 384,400 km Diameter: 3,476 km Mass: 0.0123 Earth masses Orbital Velocity (Around Earth): 1.0 km/s Gravity: 0.165 g Length of one day: 27.3 Earth days Time to orbit Earth: 27.3 Earth days The Moon, called Luna, is the only natural satellite Earth has. The first Humans landed on the moon on July 20th, 1969. The International Astronomy Road Show The moon is the only world beyond Earth visited by Humans. Six missions have landed astronauts on the surface. Many unmanned rovers and robots have visited, and remain on the Moon today. Mars Mars Average Distance from Earth: 78.3 million km Average Distance from Sun: 228 million km Diameter: 6,786 km Mass: 0.107 Earth Masses Orbital Velocity: 24.1 km/s Gravity: 0.376 g Average Temperature: -63 ℃ Length of orbit: 686.9 Earth days Mars is a cold and dusty desert world. It has the nickname “The Red Planet” because iron in its soil rusts and turns red. Length of one day: 1 day and 40 minutes Number of moons: 2 The International Astronomy Road Show Asteroid Belt Asteroid Belt Average Distance from Sun: 330 million km Belt Span: 150 million km Average Orbit: 4.4 Earth Years Composition: Most asteroids in the belt are made of rock and stone, however some are made of metals such as iron or nickel The asteroid belt is the region of space located between Mars and Jupiter. The asteroid belt contains billions of rocky bodies called asteroids. The International Astronomy Road Show Jupiter Jupiter Average Distance from Earth: 628 million km Average Distance from Sun: 778 million km Diameter: 142,984 km Mass: 317.83 Earth Masses Orbital Velocity: 13.1 km/s Gravity: 2.53 g Average Temperature: -108 ℃ Jupiter is a type of planet called a gasgiant, and it does not have a solid surface. Length of orbit: 11.86 Earth years Length of one day: 9 hours and 56 minutes Number of moons: 67 The International Astronomy Road Show Saturn Saturn Average Distance from Earth: 1.2 billion km Average Distance from Sun: 1.4 billion km Diameter: 120,536 km Mass: 95.16 Earth Masses Orbital Velocity: 9.7 km/s Saturn is a type of planet called a gas-giant. It is not the only planet with rings, but its rings are by far the biggest. Gravity: 0.916 g Average Temperature: -139 ℃ Length of orbit: 29.5 Earth years Length of one day: 10 hours and 39 minutes The International Astronomy Road Show Number of moons: 62 Uranus Uranus Average Distance from Earth: 2.7 billion km Average Distance from Sun: 2.9 billion km Diameter: 51180 km Mass: 14.536 Earth Masses Orbital Velocity: 6.8 km/s Gravity: 0.889 g Average Temperature: -197 ℃ Uranus is a type of planet called an icegiant. It has faint rings and its axis of rotation is tilted sideways. The International Astronomy Road Show Length of orbit: 84 Earth years Length of one day: 17 hours and 14 minutes Number of moons: 27 Neptune Neptune Average Distance from Earth: 4.4 billion km Average Distance from Sun: 4.5 billion km Diameter: 49,528 km Mass: 17.15 Earth Masses Orbital Velocity: 5.4 km/s Gravity: 1.12 g Average Temperature: -201 ℃ Neptune is a type of planet called an icegiant. It has the highest known wind speeds in our solar system, with a record of 2,100 km per hour. Length of orbit: 164.8 Earth years Length of one day: 16 hours and 6 minutes Number of moons: 14 The International Astronomy Road Show Pluto Pluto Average Distance from Sun: 5.9 billion km Diameter: 2,300 km Mass: 0.00218 Earth Masses Orbital Velocity: 4.7 km/s Gravity: 0.071 g Average Temperature: -229 ℃ Length of orbit: 247.7 Earth years Pluto is the second most massive dwarf planet in our solar system. It is too small to be considered a major planet. Length of one day: 6.39 Earth days Number of moons: 5 The International Astronomy Road Show Kuiper Belt Kuiper Belt Average Distance from Sun: 6 billion km Width of Belt: 3 billion km Average Temperature: -223 ℃ Average Length of orbit: 253 Earth years The first mission to the Kuiper Belt took place in July 2015 when New Horizons flew past pluto. The Kuiper Belt is the region of space beyond the orbit of Neptune that contains many asteroids, comets, and other icy bodies. The International Astronomy Road Show Oort Cloud Oort Cloud Distance from Sun: 2 light years Composition: Small icy bodies and particles thought to be remnants of the disc of material that formed the sun Nobody knows for sure how many objects are in the Oort Cloud, but some estimate that it is approximately 2 trillion. The Oort Cloud is a shell of small icy bodies that exists on the outermost boundary of our solar system. The International Astronomy Road Show Ceres Ceres Average Distance from Sun: 413.7 million km Diameter: 950 km Mass: 0.00015 Earth Masses Orbital Velocity: 17.9 km/s Gravity: 0.029 g Average Temperature: -105 ℃ Ceres is the closest dwarf planet to the Sun. It is part of the Asteroid Belt and was classified as an asteroid for over a century. Length of orbit: 4.6 Earth years Length of one day: 9 hours and 4 minutes Number of moons: 0 The International Astronomy Road Show Eris Eris Average Distance from Sun: 10.12 billion km Diameter: 2,326 km Mass: 0.0028 Earth Masses Orbital Velocity: 3.4 km/s Gravity: 0.083 g Average Temperature: -231 ℃ Eris is the furthest dwarf planet from the sun. It is the most massive dwarf planet and is (with its moon) the most distantly known natural object in the Solar System. Length of orbit: 560.9 Earth years Length of one day: 16 Earth Days Number of moons: 1 The International Astronomy Road Show Pleiades (Seven Sisters) Pleiades (Seven Sisters) Age: 100 million years old Radius: 43 Light years As it is an open cluster, it will disperse in approximately 250 million years. Pleiades, commonly known as the Seven Sisters, is a constellation made up of 9 main stars. It was used to determine the sailing season of the Mediterranean Sea in Ancient Greece. The International Astronomy Road Show Comet Comet Age: 4.6 billion years Number of known comets: 5,253 Temperatures range from -73°C to 77°C Why do you think there is such a range of temperatures? Comets are cosmic snowballs made of frozen gases, rock, and dust. In late 2014, the Rosetta spacecraft became the first to land on a comet. The International Astronomy Road Show The Universe The Universe Age: 13.8 billion years old Diameter: 91 billion light-years Average Temperature: -270.2 °C Mass: 1053 kg The Universe is what holds everything. There are still parts of the Universe that we don’t understand. The International Astronomy Road Show The United States The United States Age: 239 years old Coast to Coast: 4800 km Average Temperature: 14°C Total Mass of Population: 20 billion kg The United States of America: founded in 1776 after declaring its independence from Britain. Hawaii, the last state to enter the union, was added in 1959. The International Astronomy Road Show Candle Flame Candle Flame Average Temperature: 1,100°C How hot is the flame of a candle? The International Astronomy Road Show Soup Soup Average Temperature: 99°C How hot is a bowl of soup? The International Astronomy Road Show Blue Whale Blue Whale Average Length: 30 m Average Mass: 190,500 kg How big is a blue whale? The International Astronomy Road Show Tyrannosaurus Rex Tyrannosaurus Rex Temperature: Perhaps around 30°C Age: 66 Million Years Ago Mass: 7000 kg Size: 6 m (height) The International Astronomy Road Show Human Human Male Average Height: 1.76 m Male Average Mass: 88 kg Female Average Height: 1.62 m Female Average Mass: 74 kg Average Internal Temperature: 37°C How do the characteristics of humans compare? Age: 200,000 years (since modern humans evolved) Speed: 12.4 m/s (Recorded by Usain Bolt) The International Astronomy Road Show Pleiades Pleiades Distance: ~444 light year Diameter: 15 light years Mass: 800 solar masses Number of Stars: ~400 Age: ~100 million years 1/50th the age of our sun Seven sisters is an open star cluster containing middle-aged hot B-types stars located in the constellation of Taurus. The International Astronomy Road Show Moon Landing Moon Landing Date: July 20, 1969 (46 years ago) The spaceflight that landed the first humans on the Moon was the Apollo 11. The first people to step on the moon were Neil Armstrong and Buzz Aldrin. How long ago did man first land on the moon? The International Astronomy Road Show Ice Cubes Ice Cubes Temperature: At most 0°C What temperature is ice? The International Astronomy Road Show Sirius Sirius Distance: 8.6 light years Sirius A: Diameter: ~ 2,200,000 km Mass: ~ 2 times the mass of the Sun Temperature: ~ 9,680 ℃ Age: ~ 235 million years Sirius B: Diameter: ~ 5,600 km Sirius is the brightest star in the night sky. It is actually a binary system (made up of two stars). You can see the second star to the bottom left of the main star in the picture above from the Hubble telescope. The International Astronomy Road Show Mass: about the same as the mass of the sun Temperature: ~ 25,000 ℃ Polaris Polaris Distance: ~ 375 light years Diameter: ~ 68,000,000 km Mass: ~ 4.5 times the mass of the Sun Temperature: ~ 5,800 ℃ Age: ~ 70 million years Polaris (often called the North Star) is a yellow supergiant star. It is actually a system of three stars orbiting each other. Historically it has been an important star in celestial navigation, as it always sits at the same spot in the sky. The International Astronomy Road Show Betelgeuse Betelgeuse Distance: ~ 650 light years Diameter: ~ 1,400,000,000 km Mass: ~ 14 times the mass of the Sun Temperature: ~ 3300 ℃ Age: ~ 7.3 million years Betelgeuse is a red supergiant star in the constellation of Orion. It is the second brightest star in that constellation and looks red to the naked eye. It is a huge star: you could fit about a billion suns in it! The International Astronomy Road Show Milky Way Galaxy Milky Way Galaxy Diameter: ~ 110,000 light years Mass: ~ 800 billion times the mass of the Sun Number of Stars: ~100-200 billion Age: 13.6 billion years The Milky Way over ALMA by Jose Francisco Salgado Our solar system is located in the Milky Way Galaxy, at the edge of one of it’s spiral arms called the Orion Arm. You can look out at the Milky Way from Earth if the skies are dark and the season is right. The International Astronomy Road Show Large Magellanic Cloud Large Magellanic Cloud Diameter: ~ 14,000 light years Mass: ~ 10 billion times the mass of the Sun Number of Stars: ~30 billion Age: 13.8 billion years Named after Ferdinand Magellan, the LMC is considered an irregular type galaxy, but some astronomers believe that the bar across the middle indicates that it may have once been a spiral galaxy like the Milky Way. The International Astronomy Road Show Small Magellanic Cloud Small Magellanic Cloud Diameter: ~ 7,000 light years Mass: ~ 6.5 billion times the mass of the Sun Number of Stars: < 1 billion Age: 13.8 billion years Named after Ferdinand Magellan, the SMC is a close neighbor to The Milky Way Galaxy and it is one of the most distant objects that can be seen with the naked eye. The International Astronomy Road Show Pyramids Pyramids Height: 140 meters Number of blocks: 2.3 million Age: 4575 years old Location: Giza, Egypt The pyramids of Giza are one of the 7 Wonders of the Ancient world. These structures served as tombs for fallen egyptian pharaohs. The International Astronomy Road Show