Web15 Likes, 2 Comments - Sam (@astronuffie) on Instagram: "I'm not gonna lie, it's been a tough last a couple of months, with lots of ups and downs! But I a..." WebLifespans for main sequence stars have a vast range. Whilst our Sun will spend 10 billion years on the main sequence, a high-mass, ten solar-mass (10M Sun) star will only last 20 million years (2.0× 10 7 years) on the main sequence. A star with a only half the mass of Sun can spend 80 billion years on the main sequence. e acute on keyboard mac WebAccording to theoretical calculations, the smallest mass that a true star can have is about 1/12 that of the Sun. By a “true” star, astronomers mean one that becomes hot enough to fuse protons to form helium (as discussed in The Sun: A Nuclear Powerhouse ). WebThe luminosity measures how quickly the star is using that fuel, so, in general, a rough estimate of the lifetime of a star is: t ≈ M / L. but, you can substitute in using L ≈ M 3.5 and determine that: t ≈ M / M 3.5 = 1 / M 2.5. As we continue our study of star clusters, keep this in mind—the more massive a star, the faster it lives its ... e acute accent microsoft word WebNone of the stars within 30 light-years of the Sun has a mass greater than four times that of the Sun. Searches at large distances from the Sun have led to the discovery of a few stars with masses up to about 100 times that of the Sun, and a handful of stars (a few out of several billion) may have masses as large as 250 solar masses. WebEarth Sciences questions and answers. A star has 5 times the mass of the Sun. This star is (a) ______ times as luminous as the Sun. The lifespan of this star will be (b) … e acute on apple keyboard WebA white dwarf is a stellar core remnant composed mostly of electron-degenerate matter.A white dwarf is very dense: its mass is comparable to the Sun's, while its volume is comparable to the Earth's. A white dwarf's faint luminosity comes from the emission of residual thermal energy; no fusion takes place in a white dwarf. The nearest known …

WebQuestion: A star 2.5 times the mass of the sun and collapsed to a size of the 12 km rotates with a speed of 1.5 rev . Per second. ( Extremely compact stars of this kind are known … WebFeb 26, 2024 · A star 2.5 times the mass of the sun and collapsed to a size of radius 12 km rotates with a speed of 1.2 revolution per second. Extremely compact stars of this kind are known as neutron stars. Certain stellar objects called pulsars belong to this cat... e acute on ipad keyboard http://www.1728.org/masslum.htm WebIf m1 and m2 are the magnitudes of two stars, then we can calculate the ratio of their brightness ( b 2 b 1) using this equation: m 1 − m 2 = 2.5 log ( b 2 b 1) or b 2 b 1 = 2.5 m 1 − m 2. Here is another way to write this equation: b 2 b 1 = ( 100 0.2) m 1 − m 2. Let’s do a real example, just to show how this works. class a jobs in india WebAn object placed on the equator will remain stuck to its surface if the gravitational pull at equator is greater than the outward centrifugal force at equator.Here, The gravitational pull on an object is, The centrifugal force is, As therefore, the object will remain stuck. WebThere is an equation that relates star mass and luminosity. That equation is not an exact rule but it provides a good approximation. Where luminosity and mass are based on the Sun = 1. So, if a star is 3 times more massive than the Sun, it will have a luminosity that is 46.8 times brighter. 3 3.5 = 46.8. e acute accent on keyboard WebFeb 26, 2024 · A star 2.5 times the mass of the sun and collapsed to a size of radius 12 km rotates with a speed of 1.2 revolution per second. Extremely compact stars of this kind …

WebJul 3, 2024 · Astronomers using the Hubble Space Telescope identified nine monster stars with masses more than 100 times the Sun's mass. They lie in the star cluster R136 in … e acute on macbook Webneutron star, any of a class of extremely dense, compact stars thought to be composed primarily of neutrons. Neutron stars are typically about 20 km (12 miles) in diameter. Their masses range between 1.18 and 1.97 times that of the Sun, but most are 1.35 times that of the Sun. Thus, their mean densities are extremely high—about 1014 times that of water. ea cvc words