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A star-forming region in the Large Magellanic Cloud. A star is a luminous spheroid of plasma held together by self-gravity. [1] The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light.
Sunflower sea star. Pycnopodia helianthoides, commonly known as the sunflower sea star, is a large sea star found in the northeastern Pacific Ocean. [3] The only species of its genus, it is among the largest sea stars in the world, with a maximum arm span of 1 m (3.3 ft). Adult sunflower sea stars usually have 16 to 24 limbs.
The Sun is a G-type main-sequence star that makes up about 99.86% of the mass of the Solar System. It has an absolute magnitude of +4.83, estimated to be brighter than about 85% of the stars in the Milky Way, most of which are red dwarfs. [30] [31] The Sun is a Population I, or heavy-element-rich, [b] star. [32]
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea ( / ˌæstəˈrɔɪdiə / ). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class Asteroidea.
Leo, with Leo Minor above, as depicted in Urania's Mirror, a set of constellation cards published in London c.1825. Leo is also home to a bright variable star, the red giant R Leonis. It is a Mira variable with a minimum magnitude of 10 and normal maximum magnitude of 6; it periodically brightens to magnitude 4.4.
Astropecten dubius Gray, 1840. Astropecten duplicatus Koehler, 1909. The Astropecten articulatus, more commonly known as the Royal Starfish, is a West Atlantic sea star of the family Astropectinidae. [1]
Antares is the brightest star in the constellation of Scorpius. It has the Bayer designation α Scorpii, which is Latinised to Alpha Scorpii. Often referred to as "the heart of the scorpion", Antares is flanked by σ Scorpii and τ Scorpii near the center of the constellation. Distinctly reddish when viewed with the naked eye, Antares is a slow ...
Cygnus X-1 — X-ray source. EBLM J0555-57Ab — is one of the smallest stars ever discovered. HR 465 — chemically peculiar variable star. MACS J1149 Lensed Star 1 (or Icarus) — second most distant star, 9 billion light years away. [1] [2] P Cygni — suddenly brightened in the 17th century.