Wallulis, Karl. (2017, April 24). How To Calculate Sphere Size.sciencing.com. Retrieved from https://www.sciencing.com/calculate-sphere-size-7405001/ Chicago Wallulis, Karl. How To Calculate Sphere Size last modified August 30, 2022. https://www.sciencing.com/calculate-sphere-size-7405001/ ...
A team of astronomers has used asteroseismology, or the study of stellar oscillations, to accurately measure the distance of stars from the Earth. Their research examined thousands of stars and checked the measurements taken during the Gaia mission to study the near Universe. For most of us, ...
Using Θ and Earth's orbit radius (R), they calculate a star's distance (D) as: D = RCotΘ. This is effective for stars within 50 parsecs. For farther stars, other methods involving luminosity are used. Globular Clusters and Spiral Nebulae Around the time that Kapteyn published his ...
Astronomers (professional or amateur) can measure a star's brightness (the amount of light it puts out) by using a photometer or charge-coupled device on the end of a telescope. If they know the star's brightness and the distance to the star, they can calculate its luminosity — the am...
Astronomers used to think that all of the stars in theuniversewere part of the Milky Way, but that changed in the 1920s when Edwin Hubble, the American astronomer after whom the famous telescope is named, managed to calculate the distance of the Andromeda nebula (today known as the Andromeda...
At the same time, they both took measurements of the position of Mars relative to background stars, and triangulated those measurements with the known distance between Paris and French Guiana. Once they had the distance to Mars, they could also calculate the distance from Earth to the sun. ...
We calculate the escape fraction of ionizing photons from the center of the disk along different angles through the superbubble and the gas disk. After convolving with the luminosity function of OB associations, we show that the ionizing photons escape within a cone of \sim 40 ^\circ \sim ...
which is a set of standard percentages that shows what students must earn for each letter grade A through F. A student can then calculate the percentage she has earned in a class and compare it to the grading scale to figure out her letter grade. Many teachers will grade assignments as pe...
Answer and Explanation: The speed of a moving object can be calculated using the equation, {eq}Speed=\frac{distance}{time} {/eq}. Thus, to calculate for the time needed for...Become a member and unlock all Study Answers Start today. Try it now...
When we observe stars, we are actually observing what these stars were like millions of years ago, but it has taken this much time for the light to travel to us. Answer and Explanation: The speed of light is a universal constant c,...