Examlex
Today the majority of the mass of the universe is already in the form of black dwarfs, the solution to the "dark matter" problem.
Fixed Interval Schedule
A reinforcement strategy in behavioral psychology where rewards are delivered at consistent, predetermined intervals of time.
Administer Rewards
The process of allocating incentives or benefits to individuals or groups based on their performance or achievements.
Uneven
Lacking uniformity, consistency, or equivalence; not even or balanced in distribution or arrangement.
Behavior
Refers to the actions or reactions of an organism or any living entity in response to external or internal stimuli.
Q5: Neutral hydrogen clouds appear when viewed visually.
Q11: Most of the new star formation in
Q23: If the dark nebula are really dark,
Q25: Why can we say a star spends
Q32: The magnitude of a star depends on
Q40: Fast- moving electrons, moving close to c,
Q73: Shapley found that globular clusters are only
Q104: Contrast open and globular star clusters.
Q150: William Herschel's attempt to map our Galaxy
Q170: Hubble divided the spirals into normal and