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VY Canis Majoris is a highly evolved star yet less than 10 million years old (Myr old). Some old writings envisaged the star as a very young protostar or a massive pre-main-sequence star with an age of only 1 Myr and typically a circumstellar disk. [15] It has probably evolved from a hot, dense O9 main sequence star of 5–20 R ☉ (solar radii).
where G is the gravitational constant, M is the mass of the star, R is the radius of the star, and L is the star's luminosity. As an example, the Sun 's thermal time scale is approximately 15.7 million years.
Beta Canis Majoris (β Canis Majoris, abbreviated Beta CMa, β CMa), also named Mirzam / ˈ m ɜːr z əm /, [13] is a star in the southern constellation of Canis Major, the "Great Dog", located at a distance of about 500 light-years (150 parsecs) from the Sun. [1] In the modern constellation it lies at the position of the dog's front leg.
A 10-year time-lapse of the sun was released by NASA The Solar Dynamics Observatory has watched the sun for over 10 years taking 425 million high-resolution images every 0.75 seconds in its orbit ...
Say you have a 4-year-old Labrador named Comet — with the new equation, Comet's real "dog age" would be slightly older than 53. The reason for the difference is actually pretty simple.
Main-sequence stars vary in surface temperature from approximately 2,000 to 50,000 K, whereas more-evolved stars – in particular, newly-formed white dwarfs – can have surface temperatures above 100,000 K. [3] Physically, the classes indicate the temperature of the star's atmosphere and are normally listed from hottest to coldest.
Sunset time-lapse video Mung bean seeds germinating, a 10-day time-lapse in roughly 1 minute Ten minute time-lapse video of the total solar eclipse of April 8, 2024, in Mazatlán, Mexico The ALMA time-lapse of the night sky [1] Blossoming geraniums; two hours are compressed into a few seconds.
Tara Gregg / EyeEm/Getty Images. Height: 17 - 20 inches Weight: 25 - 46 pounds Personality: Smart, Playful Activity Level: High Shedding Factor: Moderate Life Expectancy: 10-13 years Full ...