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The expansion of the Universe is accelerating.
In-depth Investigation
A thorough and detailed examination or research focused on a specific topic or issue.
Descriptive/Correlational Research Methods
Research strategies for observing and describing behavior objectively and systematically without influencing or interfering with the study.
Practical and Ethical Reasons
Justifications or motives for actions that are based on practicality, effectiveness, and alignment with moral principles.
Naturalistic Observations
A research method used to systematically observe and record behavior in its natural environment without manipulation or control.
Q7: A supermassive black hole in the center
Q21: What spacecraft will visit Pluto in 2015?<br>A)
Q23: Olber's paradox is explained by the fact
Q25: Cepheids and globular clusters are limited in
Q28: Large, smooth, dark plains on the moon
Q41: The rapid rotation and large size of
Q42: Mercury has a weak magnetic field because
Q70: How is antimatter created?
Q71: A medium-mass star becomes a red giant
Q71: The presence of _ increases the possibility