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This dust cloud is estimated to be moving at a speed of approximately 18 km/s (11 mi/s) relative to the stars in the cluster.

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The Pleiades ( PLEE-ə-deez, PLAY-, PLY-), also known as Seven Sisters and Messier 45 (M45), is an asterism of an open star cluster containing young B-type stars in the northwest of the constellation Taurus. At a distance of about 444 light-years, it is among the star clusters nearest to Earth and is the Messier object nearest to Earth, being the star cluster most obvious to the naked eye in the night sky. It contains over 1,000 stars, with the brightest six or seven being easily visible to the naked eye. The Pleiades cluster contains the reflection nebulae NGC 1432, an HII region, and NGC 1435, known as the Merope Nebula. Around 2330 BC the Pleiades marked the vernal point. Due to the brightness of its stars, the Pleiades is viewable from most areas on Earth, even in locations with significant light pollution. The cluster is dominated by hot blue luminous stars that have formed within the last 100 million years. Reflection nebulae around the brightest stars were once thought to be leftover material from their formation, but are now considered likely to be an unrelated dust cloud in the interstellar medium through which the stars are currently passing. This dust cloud is estimated to be moving at a speed of approximately 18 km/s (11 mi/s) relative to the stars in the cluster. Computer simulations have shown that the Pleiades were probably formed from a compact configuration tha…

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Notatka fact-checku: Fact-check 3.0-content-aware: no sufficient claim-bound corroboration after 3 healthy attempts. Scope=verify the factual claim. Required independent sources=2; stored evidence groups=1. Provider/API errors did not consume attempts. | Fact-check 4.3.2: research wznowiony bez zdejmowania HOLD. Poprzednia metoda: factcheck-300-content-aware. | Fact-check 4.3.2: research wznowiony bez zdejmowania HOLD. Poprzednia metoda: factcheck-weekly-research-432.

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Wikipedia ENPOTWIERDZAniezależne

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The Pleiades ( PLEE-ə-deez, PLAY-, PLY-), also known as Seven Sisters and Messier 45 (M45), is an asterism of an open star cluster containing young B-type stars in the northwest of the constellation Taurus. At a distance of about 444 light-years, it is among the star clusters nearest to Earth and is the Messier object nearest to Earth, being the star cluster most obvious to the naked eye in the night sky. It contains over 1,000 stars, with the brightest six or seven being easily visible to the naked eye. The Pleiades cluster contains the reflection nebulae NGC 1432, an HII region, and NGC 1435, known as the Merope Nebula. Around 2330 BC the Pleiades marked the vernal point. Due to the brigh…

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Wikipedia ENpomocnicze

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The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula in the Milky Way situated south of Orion's Belt in the constellation of Orion, and is known as the middle "star" in the "sword" of Orion. It is one of the brightest nebulae and is visible to the naked eye in the night sky with an apparent magnitude of 4.0. It is 1,267.0 ± 5.4 light-years (388.5 ± 1.7 pc) away and is the closest region of massive star formation to Earth. M42 is estimated to be 25 light-years across (so its apparent size from Earth is approximately 1 degree). It has a mass of about 2,000 times that of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the G…

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Oxford University Press (OUP)pomocniczeniezależne

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Wikipedia ENpomocnicze

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