Science Questions
Explore questions in the Science category that you can ask Spark.E!
During which phase of a low-mass star's life does helium shell fusion occur?
What happens to the surface of a low-mass star after the helium core and shell fusion stages are completed?
Stars of spectral type O, the hottest blue-white stars, have spectra characterized by
A star of apparent magnitude +1 appears ____ than a star of apparent magnitude +2.
If we restrict our measurements to a specific band of color or wavelength using an optical filter, what observations of a star are necessary to determine the absolute magnitude of the star at this color?
Solar flares, the violent eruptive events on the Sun, occur most frequently
If an asteroid were found to be orbiting in a circular path around the Sun at the same distance as Jupiter (5.2 AU), what would be its orbital period compared with that of Jupiter, which is 11.86 years?
Asteroids whose orbits carry them across Earth's orbit are known as
White dwarfs are not included in the luminosity classification because they are
By what standard technique do astronomers find the luminosity class (I, II, III, IV, or V) of a star?
Based on its mean density, the dwarf planet Pluto appears to be composed of
The total number of asteroids orbiting the Sun among the planets is estimated to be
One important aspect of the study of binary star systems, as distinct from single stars, is that it provides a
What is the largest known asteroid in our solar system?
When two stars of unequal mass orbit each other under their mutual gravitational attraction, where is the center of mass of the system located?
What are the two physical parameters of stars that are plotted in the Hertzsprung-Russell diagram?
Compared with a star in the middle of the Hertzsprung-Russell diagram, a star in the upper right of the diagram is
The chemical makeup of the Sun's surface can be determined by
Two stars are found to have the same luminosity. However, one star has twice the surface temperature of the other. From this information, what can you determine about their radii?
If the surface temperatures of white dwarf stars are 4 times that of the Sun, and energy output per unit area of a star depends on the fourth power of the temperature by the Stefan-Boltzmann relation, why are white dwarfs intrinsically so faint?