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Terms in this set (16)
4 fundamental forces
strong force, weak force, gravitation, electromagnetic
When an atom loses an electron, it becomes
3 main types of galaxies
spiral, elliptical, irregular
Our local group is a collection of
smallest to largest
pluto, earth, jupiter, the sun, solar system, globular cluster, milky way
An exploding star is known as a/an _____________.
Based on current observations, the age of the universe is about
14 billion years old
The radius at which nothing can escape the pull of a black hole is called the ________.
Using the H-R Diagram, the majority of stars are:
The signal from a time when the Universe was approximately 380,000 years old is called the ________.
The greater the luminosity of a star, the ________ its lifetime will be.
User Answer Correct
they are undergoing nuclear fusion
Before becoming a white dwarf, low mass stars will expel their outer layers of gas, creating a:
The apparent shift in position of an object relative to background objects is called:
In astronomy, when measuring the apparent shift in position of nearby stars against the distant background stars, the measurements are taken when the Earth is on opposite sides of the ________
When using the parallax method, if an object appears to shift less, that means its distance is __________.
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