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What evidence do scientists have which indicates that all elements with an atomic number greater than that of lithium have been formed by nuclear fusion in stars?
Scientists have observed the nuclear fusion process in stars through spectroscopy, where they analyze the light emitted by stars. They have found elements with atomic numbers greater than lithium in stellar spectra, indicating their formation through nuclear fusion. Additionally, the abundance of these heavier elements in the universe correlates with the age and composition of stars, supporting their stellar origin.
Who looks at the stars?
Astrologers and Scientists (especially studying physics) look at the stars
What was the most important contribution of the Phoenicians to our civilization?
Navigating by the stars.
Why do planets orbit stars and moons orbit stars?
Because stars have a greater amount of gravity
How do scientists use computers to measure distance from stars?
From what I remember in two geology classes, scientists measure the distance between a star and Earth by comparing "red shift," a shifting of certain bands of light toward the "red" end of the spectrum. The further the shifting, the greater the distance.
What do scientists study to learn about stars?
spectrographs
To calculate the mass of a star scientists study?
the orbits of binary stars
How hot are O stars?
Class O stars are the hottest of stars with temperatures greater than 30,000oK
Why do scientists measure distances to stars and observe how stars interact with one another to?
Scientists measure distances to stars to determine their exact positions in the sky and their relationships with other astronomical objects. By observing how stars interact with each other, scientists can understand the dynamics of star systems, galaxies, and the Universe as a whole, helping to unravel the mysteries of celestial phenomena.
A sentence with bodies?
scientists call stars heavenly bodies
Why do scientists believe that there are billions of stars in galaxies?
Because they can see them.
Why scientists uses instrument to study stars?
telescope,spectroscope
