White dwarf

Noah Yeasted A black hole is a large amount of matter in a small space. Black holes are one of the things that can be left over after a larger star dies. The other thing a larger star can become after it dies is a neutron star. A white dwarf is created after a smaller star dies. The only way for a star to become a black hole is if the star was 10-15 times more massive than the sun. The diameter of a black hole is approximately the diameter of New York City. A black hole’s gravitational pull is…

“Oh, be a fine girl/guy kiss me,” or maybe not. Learning this phrase has helped multiple astronomers to educate themselves on the spectral classification of stars and continues to do so in today’s time. Annie Jump Cannon’s legacy will carry on lasting a lifetime! The first letters of each word in the phrase represents the seven main types of stars. Starting with ”‘O,” these stars are very young, blue, hot, massive and extremely bright star. This type of star is very uncommon similar to the “B”…

reason stars die is due to the outer layers of the star are no longer able to resist the central force of gravity, which pulls the outer matter inward toward its core. What happened next depended on the star’s mass. In some cases, it collapsed to a white dwarf star, which is a dim planet-sized object that is extraordinarily dense because it remains most of its original mass. In other cases, an extremely massive star would undergo major core collapse causing the star to explode violently and…

two stars, Shaula and Lesath. The name Shaula is an Arabic word that mean the stinger, as it the star that makes up the stinger on the constellation along with Lesath. Shaula is a hot subgiant star, but the star seems to be more of a hydrogen fusing dwarf. The estimated age of the star system is about 10-13 million years, and the surface temperature is 23,000. Its apparent magnitude of 1.62 makes it one of the 25 brightest stars in the sky and it’s estimated positon is 17h33.7m, Dec. - 37°06−.…

The purpose of the lab was to fully understand the Herztsprung-Russel diagram. We use this diagram to categorize stars with their stellar properties. By examining a star’s temperature, relative size, and luminosity for instance, you can plot them on an HR diagram. During the lab we did four different activities to understand the lab. The first was to look at a group of squares with different sizes, letters, color, and numbers. We categorized them based on color and then in order from smallest…

SUPERGIANT STAR Supergiants are among the most luminous and massive stars, ranging between 7-10 solar masses and can range in brightness from thirty thousand to hundreds of thousands the output of our sun. They reside in the top region of the Hertzsprung-Russel diagram; having temperatures from 3,500k to over 20,000k and having bolometric absolute magnitudes between -5 and-12. Supergiants are massive enough to begin burning helium gently in their core before it becomes degenerate, and without…

19° north of the celestial equator. The orange-colored star passes high overhead on late spring evenings. Following the curve of the Big Dipper’s handle to Arcturus and beyond, is the bright star, Spica, in the constellation Virgo. Spica is a blue-white first-magnitude star 250 light-years away. The best evening views of Spica come from spring to late summer when the star arcs across the southern sky. Spica rises in the east-southeast as the sunset glow fades in mid-April and is visible most of…

On September 6, the sun let its presence be felt by unleashing two massive solar flares. The first eruption, classified as an X2.2 flare, the strongest since 2008, occurred at 5:10 a.m. ET. Shortly after, at 8:02 a.m ET, the star spewed out a bigger, and more dramatic, X9.3 flare — the strongest on record since December 2006. Solar flares, or storms, beginning with an explosion usually above a sunspot, the area where strong magnetic fields poke through the sun's surface. When these spots become…

The star outside your spaceship's windshield is a spectacular sight. HR 5171 A is a fireball 1,300 times larger than the Earth's sun. It's so big that if it were in our sun's position, it would swallow up Earth beneath its 10,000°F surface. To look at it from your spaceship, you have to wear special goggles--this star is almost a million times brighter than our sun. As you watch HR 5171A burn, you notice something strange. An object is peeking over the horizon, growing larger and larger. It's…

A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, forms part of the Hubble sequence. Spiral galaxies consist of a flat, rotating disc containing stars, gas and dust, and a central concentration of stars known as the bulge.(Sloan) Spiral galaxies resemble spiraling pinwheels, nearly 77% of space consists of spiral galaxies. Though the stars and other visible material contained in such a galaxy lie mostly on a…