Star Size Comparison 2
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Star Size Comparison 2

😀 Earth’s Moon Mercury Ganymede
Jupiter’s Moon Mars Venus
Known as Earth’s sister planet Earth [known as Terra]
You are still here! Kepler 10c [Exoplanet]
One of the biggest rocky planet ever discovered

Exoplanet=a planet orbiting a star outside our solar system Neptune
The smallest known gas giant in the solar system Uranus
Tilted sideways, also has rings Saturn
Not the only planet that has rings 2MASS J0523-1403
Red Dwarf
One of the smallest possible stars in the universe Jupiter
The biggest gas giant in our solar system
Fun Fact: The Great Red Spot is there for 200 years! HD 100546 b
One of the biggest possible planets in the universe
Also a failed star The Sun [Sol]
Yellow main-sequence star
Our host star in the solar system Sirius A
Blue-white main-sequence star Pollux
Orange Giant
Fun Fact: It may turn to a red giant if it continues its nuclear fusion. Arcturus
Red-orange Giant
Fun Fact: If it replaced the Sun, then it will suck up Mercury and heat up the rocky planets! Aldebaran
Red-orange Giant
Fun Fact: It is getting to its red giant phase in the future. Rigel
Blue Supergiant
Fun Fact: It will turn to a red supergiant in 10 million years. Pistol Star
Blue Hypergiant
Fun Fact: There is a 1% chance that Pistol Star will turn to a red giant at the same time as Rigel. Antares
Red Supergiant
Fun Fact: It is approximately 70% the size of Betelgeuse. Betelgeuse
Red Supergiant
Fun Fact: It will go supernova in approximately 1 to 10 million years and turn into a neutron star. VY Canis Majoris
Red Hypergiant
Fun Fact: It may go supernova in 100,000 years. There is a 96% chance that it will go hypernova, and turn into a black hole the size of its shrinking core. UY Scuti
Red Supergiant
Fun Fact: It is the biggest known star in the Milky Way galaxy. Quasi Star
[theoretical star]
Possible sizes 1 Light Day
25,902,068,370 km
16,094,794,125 mi 10 Light Days
259,020,683,700 km
160,947,941,250 mi 100 Light Days
2,590,206,837,000 km
1,609,479,412,500 mi 1 Light Year
9,454,254,955,050 km
5,874,599,855,625 mi There are many hundred billion stars in the Milky Way galaxy, nearly all of them are circled by at least one planet or other stars in the Milky Way. The Milky Way, the galaxy in which our Sun orbits our supermassive black hole, Saggitarius A, every 200 million years. The Andromeda Galaxy will collide with the Milky Way in a couple or few billion years. Other galaxies, as seen by the Hubble Deep Field images. Laniakea Supercluster
Hawaiian=Immeasurable Heaven
A supercluster of galaxies, where the Milky Way is one of 100,000. The Cosmic Web, which there are billions and billions of galaxies. The Cosmic Microwave Background Radiation [CMB], which is the afterglow of the Big Bang. The Observable Universe Other universes with different laws of nature? The Multiverse. *Yellow flare stays at the end* *The yellow flare decays*


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