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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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星星大小的比较 (Star Size Comparison 2)

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Caterpillar 發佈於 2019 年 10 月 3 日
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